comboex.c

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/*
 * ComboBoxEx control
 *
 * Copyright 1998, 1999 Eric Kohl
 * Copyright 2000, 2001, 2002 Guy Albertelli <galberte@neo.lrun.com>
 * Copyright 2002 Dimitrie O. Paun
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 *
 * NOTE
 * 
 * This code was audited for completeness against the documented features
 * of Comctl32.dll version 6.0 on Sep. 9, 2002, by Dimitrie O. Paun.
 * 
 * Unless otherwise noted, we believe this code to be complete, as per
 * the specification mentioned above.
 * If you discover missing features, or bugs, please note them below.
 * 
 */

#include <stdarg.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "winnls.h"
#include "commctrl.h"
#include "comctl32.h"
#include "wine/debug.h"
#include "wine/unicode.h"

WINE_DEFAULT_DEBUG_CHANNEL(comboex);

/* Item structure */
typedef struct _CBE_ITEMDATA
{
    struct _CBE_ITEMDATA *next;
    UINT         mask;
    LPWSTR       pszText;
    LPWSTR       pszTemp;
    int          cchTextMax;
    int          iImage;
    int          iSelectedImage;
    int          iOverlay;
    int          iIndent;
    LPARAM       lParam;
} CBE_ITEMDATA;

/* ComboBoxEx structure */
typedef struct
{
    HIMAGELIST   himl;
    HWND         hwndSelf;         /* my own hwnd */
    HWND         hwndNotify;       /* my parent hwnd */
    HWND         hwndCombo;
    HWND         hwndEdit;
    DWORD        dwExtStyle;
    INT          selected;         /* index of selected item */
    DWORD        flags;            /* WINE internal flags */
    HFONT        defaultFont;
    HFONT        font;
    INT          nb_items;         /* Number of items */
    BOOL         unicode;          /* TRUE if this window is Unicode   */
    BOOL         NtfUnicode;       /* TRUE if parent wants notify in Unicode */
    CBE_ITEMDATA *edit;            /* item data for edit item */
    CBE_ITEMDATA *items;           /* Array of items */
} COMBOEX_INFO;

/* internal flags in the COMBOEX_INFO structure */
#define  WCBE_ACTEDIT       0x00000001  /* Edit active i.e.
                                             * CBEN_BEGINEDIT issued
                                             * but CBEN_ENDEDIT{A|W}
                                             * not yet issued. */
#define  WCBE_EDITCHG       0x00000002  /* Edit issued EN_CHANGE */
#define  WCBE_EDITHASCHANGED    (WCBE_ACTEDIT | WCBE_EDITCHG)
#define  WCBE_EDITFOCUSED   0x00000004  /* Edit control has focus */
#define  WCBE_MOUSECAPTURED 0x00000008  /* Combo has captured mouse */
#define  WCBE_MOUSEDRAGGED      0x00000010  /* User has dragged in combo */

#define ID_CB_EDIT      1001


/*
 * Special flag set in DRAWITEMSTRUCT itemState field. It is set by
 * the ComboEx version of the Combo Window Proc so that when the
 * WM_DRAWITEM message is then passed to ComboEx, we know that this
 * particular WM_DRAWITEM message is for listbox only items. Any message
 * without this flag is then for the Edit control field.
 *
 * We really cannot use the ODS_COMBOBOXEDIT flag because MSDN states that
 * only version 4.0 applications will have ODS_COMBOBOXEDIT set.
 */
#define ODS_COMBOEXLBOX     0x4000



/* Height in pixels of control over the amount of the selected font */
#define CBE_EXTRA       3

/* Indent amount per MS documentation */
#define CBE_INDENT      10

/* Offset in pixels from left side for start of image or text */
#define CBE_STARTOFFSET     6

/* Offset between image and text */
#define CBE_SEP         4

#define COMBO_SUBCLASSID  1
#define EDIT_SUBCLASSID   2

#define COMBOEX_GetInfoPtr(hwnd) ((COMBOEX_INFO *)GetWindowLongPtrW (hwnd, 0))

static LRESULT CALLBACK COMBOEX_EditWndProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam,
                                             UINT_PTR uId, DWORD_PTR ref_data);
static LRESULT CALLBACK COMBOEX_ComboWndProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam,
                                              UINT_PTR uId, DWORD_PTR ref_data);
static LRESULT COMBOEX_Destroy (COMBOEX_INFO *infoPtr);
typedef INT (WINAPI *cmp_func_t)(LPCWSTR, LPCWSTR);

static inline BOOL is_textW(LPCWSTR str)
{
    return str && str != LPSTR_TEXTCALLBACKW;
}

static inline BOOL is_textA(LPCSTR str)
{
    return str && str != LPSTR_TEXTCALLBACKA;
}

static inline LPCSTR debugstr_txt(LPCWSTR str)
{
    if (str == LPSTR_TEXTCALLBACKW) return "(callback)";
    return debugstr_w(str);
}

static void COMBOEX_DumpItem (CBE_ITEMDATA const *item)
{
    TRACE("item %p - mask=%08x, pszText=%p, cchTM=%d, iImage=%d\n",
          item, item->mask, item->pszText, item->cchTextMax, item->iImage);
    TRACE("item %p - iSelectedImage=%d, iOverlay=%d, iIndent=%d, lParam=%08lx\n",
          item, item->iSelectedImage, item->iOverlay, item->iIndent, item->lParam);
    if (item->mask & CBEIF_TEXT)
        TRACE("item %p - pszText=%s\n", item, debugstr_txt(item->pszText));
}


static void COMBOEX_DumpInput (COMBOBOXEXITEMW const *input)
{
    TRACE("input - mask=%08x, iItem=%ld, pszText=%p, cchTM=%d, iImage=%d\n",
          input->mask, input->iItem, input->pszText, input->cchTextMax,
          input->iImage);
    if (input->mask & CBEIF_TEXT)
        TRACE("input - pszText=<%s>\n", debugstr_txt(input->pszText));
    TRACE("input - iSelectedImage=%d, iOverlay=%d, iIndent=%d, lParam=%08lx\n",
          input->iSelectedImage, input->iOverlay, input->iIndent, input->lParam);
}


static inline CBE_ITEMDATA *get_item_data(const COMBOEX_INFO *infoPtr, INT index)
{
    return (CBE_ITEMDATA *)SendMessageW (infoPtr->hwndCombo, CB_GETITEMDATA,
                                         index, 0);
}

static inline cmp_func_t get_cmp_func(COMBOEX_INFO const *infoPtr)
{
    return infoPtr->dwExtStyle & CBES_EX_CASESENSITIVE ? lstrcmpW : lstrcmpiW;
}

static INT COMBOEX_Notify (const COMBOEX_INFO *infoPtr, INT code, NMHDR *hdr)
{
    hdr->idFrom = GetDlgCtrlID (infoPtr->hwndSelf);
    hdr->hwndFrom = infoPtr->hwndSelf;
    hdr->code = code;
    if (infoPtr->NtfUnicode)
    return SendMessageW (infoPtr->hwndNotify, WM_NOTIFY, 0, (LPARAM)hdr);
    else
    return SendMessageA (infoPtr->hwndNotify, WM_NOTIFY, 0, (LPARAM)hdr);
}


static INT
COMBOEX_NotifyItem (const COMBOEX_INFO *infoPtr, UINT code, NMCOMBOBOXEXW *hdr)
{
    /* Change the Text item from Unicode to ANSI if necessary for NOTIFY */
    if (infoPtr->NtfUnicode)
    return COMBOEX_Notify (infoPtr, code, &hdr->hdr);
    else {
    LPWSTR wstr = hdr->ceItem.pszText;
    LPSTR astr = 0;
    INT ret, len = 0;

    if ((hdr->ceItem.mask & CBEIF_TEXT) && is_textW(wstr)) {
        len = WideCharToMultiByte (CP_ACP, 0, wstr, -1, 0, 0, NULL, NULL);
        if (len > 0) {
                astr = Alloc ((len + 1)*sizeof(CHAR));
        if (!astr) return 0;
        WideCharToMultiByte (CP_ACP, 0, wstr, -1, astr, len, 0, 0);
        hdr->ceItem.pszText = (LPWSTR)astr;
        }
    }

    if (code == CBEN_ENDEDITW) code = CBEN_ENDEDITA;
    else if (code == CBEN_GETDISPINFOW) code = CBEN_GETDISPINFOA;
    else if (code == CBEN_DRAGBEGINW) code = CBEN_DRAGBEGINA;

    ret = COMBOEX_Notify (infoPtr, code, (NMHDR *)hdr);

    if (astr && hdr->ceItem.pszText == (LPWSTR)astr)
        hdr->ceItem.pszText = wstr;

    Free(astr);

    return ret;
    }
}


static INT COMBOEX_NotifyEndEdit (const COMBOEX_INFO *infoPtr, NMCBEENDEDITW *neew, LPCWSTR wstr)
{
    /* Change the Text item from Unicode to ANSI if necessary for NOTIFY */
    if (infoPtr->NtfUnicode) {
    lstrcpynW(neew->szText, wstr, CBEMAXSTRLEN);
    return COMBOEX_Notify (infoPtr, CBEN_ENDEDITW, &neew->hdr);
    } else {
    NMCBEENDEDITA neea;

        neea.hdr = neew->hdr;
        neea.fChanged = neew->fChanged;
        neea.iNewSelection = neew->iNewSelection;
        WideCharToMultiByte (CP_ACP, 0, wstr, -1, neea.szText, CBEMAXSTRLEN, 0, 0);
        neea.iWhy = neew->iWhy;

        return COMBOEX_Notify (infoPtr, CBEN_ENDEDITA, &neea.hdr);
    }
}


static void COMBOEX_NotifyDragBegin(const COMBOEX_INFO *infoPtr, LPCWSTR wstr)
{
    /* Change the Text item from Unicode to ANSI if necessary for NOTIFY */
    if (infoPtr->NtfUnicode) {
        NMCBEDRAGBEGINW ndbw;

    ndbw.iItemid = -1;
    lstrcpynW(ndbw.szText, wstr, CBEMAXSTRLEN);
    COMBOEX_Notify (infoPtr, CBEN_DRAGBEGINW, &ndbw.hdr);
    } else {
    NMCBEDRAGBEGINA ndba;

    ndba.iItemid = -1;
    WideCharToMultiByte (CP_ACP, 0, wstr, -1, ndba.szText, CBEMAXSTRLEN, 0, 0);

    COMBOEX_Notify (infoPtr, CBEN_DRAGBEGINA, &ndba.hdr);
    }
}


static void COMBOEX_FreeText (CBE_ITEMDATA *item)
{
    if (is_textW(item->pszText)) Free(item->pszText);
    item->pszText = 0;
    Free(item->pszTemp);
    item->pszTemp = 0;
}


static INT COMBOEX_GetIndex(COMBOEX_INFO const *infoPtr, CBE_ITEMDATA const *item)
{
    CBE_ITEMDATA const *moving;
    INT index;

    moving = infoPtr->items;
    index = infoPtr->nb_items - 1;

    while (moving && (moving != item)) {
        moving = moving->next;
        index--;
    }
    if (!moving || (index < 0)) {
        ERR("COMBOBOXEX item structures broken. Please report!\n");
        return -1;
    }
    return index;
}


static LPCWSTR COMBOEX_GetText(const COMBOEX_INFO *infoPtr, CBE_ITEMDATA *item)
{
    NMCOMBOBOXEXW nmce;
    LPWSTR text, buf;
    INT len;

    if (item->pszText != LPSTR_TEXTCALLBACKW)
    return item->pszText;

    ZeroMemory(&nmce, sizeof(nmce));
    nmce.ceItem.mask = CBEIF_TEXT;
    nmce.ceItem.lParam = item->lParam;
    nmce.ceItem.iItem = COMBOEX_GetIndex(infoPtr, item);
    COMBOEX_NotifyItem(infoPtr, CBEN_GETDISPINFOW, &nmce);

    if (is_textW(nmce.ceItem.pszText)) {
    len = MultiByteToWideChar (CP_ACP, 0, (LPSTR)nmce.ceItem.pszText, -1, NULL, 0);
        buf = Alloc ((len + 1)*sizeof(WCHAR));
    if (buf)
        MultiByteToWideChar (CP_ACP, 0, (LPSTR)nmce.ceItem.pszText, -1, buf, len);
    if (nmce.ceItem.mask & CBEIF_DI_SETITEM) {
        COMBOEX_FreeText(item);
        item->pszText = buf;
    } else {
        Free(item->pszTemp);
        item->pszTemp = buf;
    }
    text = buf;
    } else
    text = nmce.ceItem.pszText;

    if (nmce.ceItem.mask & CBEIF_DI_SETITEM)
    item->pszText = text;
    return text;
}


static void COMBOEX_GetComboFontSize (const COMBOEX_INFO *infoPtr, SIZE *size)
{
    static const WCHAR strA[] = { 'A', 0 };
    HFONT nfont, ofont;
    HDC mydc;

    mydc = GetDC (0); /* why the entire screen???? */
    nfont = (HFONT)SendMessageW (infoPtr->hwndCombo, WM_GETFONT, 0, 0);
    ofont = SelectObject (mydc, nfont);
    GetTextExtentPointW (mydc, strA, 1, size);
    SelectObject (mydc, ofont);
    ReleaseDC (0, mydc);
    TRACE("selected font hwnd=%p, height=%d\n", nfont, size->cy);
}


static void COMBOEX_CopyItem (const CBE_ITEMDATA *item, COMBOBOXEXITEMW *cit)
{
    if (cit->mask & CBEIF_TEXT) {
        /*
         * when given a text buffer actually use that buffer
         */
        if (cit->pszText) {
        if (is_textW(item->pszText))
                lstrcpynW(cit->pszText, item->pszText, cit->cchTextMax);
        else
        cit->pszText[0] = 0;
        } else {
            cit->pszText        = item->pszText;
            cit->cchTextMax     = item->cchTextMax;
        }
    }
    if (cit->mask & CBEIF_IMAGE)
    cit->iImage         = item->iImage;
    if (cit->mask & CBEIF_SELECTEDIMAGE)
    cit->iSelectedImage = item->iSelectedImage;
    if (cit->mask & CBEIF_OVERLAY)
    cit->iOverlay       = item->iOverlay;
    if (cit->mask & CBEIF_INDENT)
    cit->iIndent        = item->iIndent;
    if (cit->mask & CBEIF_LPARAM)
    cit->lParam         = item->lParam;
}


static void COMBOEX_AdjustEditPos (const COMBOEX_INFO *infoPtr)
{
    SIZE mysize;
    INT x, y, w, h, xioff;
    RECT rect;

    if (!infoPtr->hwndEdit) return;

    if (infoPtr->himl && !(infoPtr->dwExtStyle & CBES_EX_NOEDITIMAGEINDENT)) {
        IMAGEINFO iinfo;
        iinfo.rcImage.left = iinfo.rcImage.right = 0;
    ImageList_GetImageInfo(infoPtr->himl, 0, &iinfo);
    xioff = iinfo.rcImage.right - iinfo.rcImage.left + CBE_SEP;
    }  else xioff = 0;

    GetClientRect (infoPtr->hwndCombo, &rect);
    InflateRect (&rect, -2, -2);
    InvalidateRect (infoPtr->hwndCombo, &rect, TRUE);

    /* reposition the Edit control based on whether icon exists */
    COMBOEX_GetComboFontSize (infoPtr, &mysize);
    TRACE("Combo font x=%d, y=%d\n", mysize.cx, mysize.cy);
    x = xioff + CBE_STARTOFFSET + 1;
    w = rect.right-rect.left - x - GetSystemMetrics(SM_CXVSCROLL) - 1;
    h = mysize.cy + 1;
    y = rect.bottom - h - 1;

    TRACE("Combo client (%s), setting Edit to (%d,%d)-(%d,%d)\n",
          wine_dbgstr_rect(&rect), x, y, x + w, y + h);
    SetWindowPos(infoPtr->hwndEdit, HWND_TOP, x, y, w, h,
         SWP_SHOWWINDOW | SWP_NOACTIVATE | SWP_NOZORDER);
}


static void COMBOEX_ReSize (const COMBOEX_INFO *infoPtr)
{
    SIZE mysize;
    LONG cy;
    IMAGEINFO iinfo;

    COMBOEX_GetComboFontSize (infoPtr, &mysize);
    cy = mysize.cy + CBE_EXTRA;
    if (infoPtr->himl && ImageList_GetImageInfo(infoPtr->himl, 0, &iinfo)) {
    cy = max (iinfo.rcImage.bottom - iinfo.rcImage.top, cy);
    TRACE("upgraded height due to image:  height=%d\n", cy);
    }
    SendMessageW (infoPtr->hwndSelf, CB_SETITEMHEIGHT, -1, cy);
    if (infoPtr->hwndCombo) {
        SendMessageW (infoPtr->hwndCombo, CB_SETITEMHEIGHT, 0, cy);
    if ( !(infoPtr->flags & CBES_EX_NOSIZELIMIT)) {
        RECT comboRect, ourRect;
        GetWindowRect(infoPtr->hwndCombo, &comboRect);
            GetWindowRect(infoPtr->hwndSelf, &ourRect);
            if (comboRect.bottom > ourRect.bottom)
                SetWindowPos( infoPtr->hwndSelf, 0, 0, 0, ourRect.right - ourRect.left,
                              comboRect.bottom - comboRect.top,
                              SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW );
    }
    }
}


static void COMBOEX_SetEditText (const COMBOEX_INFO *infoPtr, CBE_ITEMDATA *item)
{
    if (!infoPtr->hwndEdit) return;

    if (item->mask & CBEIF_TEXT) {
    SendMessageW (infoPtr->hwndEdit, WM_SETTEXT, 0, (LPARAM)COMBOEX_GetText(infoPtr, item));
    SendMessageW (infoPtr->hwndEdit, EM_SETSEL, 0, 0);
    SendMessageW (infoPtr->hwndEdit, EM_SETSEL, 0, -1);
    }
}


static CBE_ITEMDATA * COMBOEX_FindItem(const COMBOEX_INFO *infoPtr, INT_PTR index)
{
    CBE_ITEMDATA *item;
    INT i;

    if ((index >= infoPtr->nb_items) || (index < -1))
    return 0;
    if (index == -1)
    return infoPtr->edit;
    item = infoPtr->items;
    i = infoPtr->nb_items - 1;

    /* find the item in the list */
    while (item && (i > index)) {
    item = item->next;
    i--;
    }
    if (!item || (i != index)) {
    ERR("COMBOBOXEX item structures broken. Please report!\n");
    return 0;
    }
    return item;
}

/* ***  CBEM_xxx message support  *** */

static UINT COMBOEX_GetListboxText(const COMBOEX_INFO *infoPtr, INT_PTR n, LPWSTR buf)
{
    CBE_ITEMDATA *item;
    LPCWSTR str;

    item = COMBOEX_FindItem(infoPtr, n);
    if (!item)
        return 0;

    str = COMBOEX_GetText(infoPtr, item);
    if (!str)
    {
        if (buf)
        {
            if (infoPtr->unicode)
                buf[0] = 0;
            else
                *((LPSTR)buf) = 0;
        }
        return 0;
    }

    if (infoPtr->unicode)
    {
        if (buf)
            lstrcpyW(buf, str);
        return lstrlenW(str);
    }
    else
    {
        UINT r;
        r = WideCharToMultiByte(CP_ACP, 0, str, -1, (LPSTR)buf, 0x40000000, NULL, NULL);
        if (r) r--;
        return r;
    }
}


static INT COMBOEX_DeleteItem (const COMBOEX_INFO *infoPtr, INT_PTR index)
{
    TRACE("(index=%ld)\n", index);

    /* if item number requested does not exist then return failure */
    if ((index >= infoPtr->nb_items) || (index < 0)) return CB_ERR;
    if (!COMBOEX_FindItem(infoPtr, index)) return CB_ERR;

    /* doing this will result in WM_DELETEITEM being issued */
    SendMessageW (infoPtr->hwndCombo, CB_DELETESTRING, index, 0);

    return infoPtr->nb_items;
}


static BOOL COMBOEX_GetItemW (const COMBOEX_INFO *infoPtr, COMBOBOXEXITEMW *cit)
{
    INT_PTR index = cit->iItem;
    CBE_ITEMDATA *item;

    TRACE("\n");

    /* if item number requested does not exist then return failure */
    if ((index >= infoPtr->nb_items) || (index < -1)) return FALSE;

    /* if the item is the edit control and there is no edit control, skip */
    if ((index == -1) && !infoPtr->hwndEdit) return FALSE;

    if (!(item = COMBOEX_FindItem(infoPtr, index))) return FALSE;

    COMBOEX_CopyItem (item, cit);

    return TRUE;
}


static BOOL COMBOEX_GetItemA (const COMBOEX_INFO *infoPtr, COMBOBOXEXITEMA *cit)
{
    COMBOBOXEXITEMW tmpcit;

    TRACE("\n");

    tmpcit.mask = cit->mask;
    tmpcit.iItem = cit->iItem;
    tmpcit.pszText = 0;
    if(!COMBOEX_GetItemW (infoPtr, &tmpcit)) return FALSE;

    if (cit->mask & CBEIF_TEXT)
    {
        if (is_textW(tmpcit.pszText) && cit->pszText)
            WideCharToMultiByte(CP_ACP, 0, tmpcit.pszText, -1,
                                cit->pszText, cit->cchTextMax, NULL, NULL);
        else if (cit->pszText) cit->pszText[0] = 0;
        else cit->pszText = (LPSTR)tmpcit.pszText;
    }

    if (cit->mask & CBEIF_IMAGE)
        cit->iImage = tmpcit.iImage;
    if (cit->mask & CBEIF_SELECTEDIMAGE)
        cit->iSelectedImage = tmpcit.iSelectedImage;
    if (cit->mask & CBEIF_OVERLAY)
        cit->iOverlay = tmpcit.iOverlay;
    if (cit->mask & CBEIF_INDENT)
        cit->iIndent = tmpcit.iIndent;
    if (cit->mask & CBEIF_LPARAM)
        cit->lParam = tmpcit.lParam;

    return TRUE;
}


static inline BOOL COMBOEX_HasEditChanged (COMBOEX_INFO const *infoPtr)
{
    return infoPtr->hwndEdit && (infoPtr->flags & WCBE_EDITHASCHANGED) == WCBE_EDITHASCHANGED;
}


static INT COMBOEX_InsertItemW (COMBOEX_INFO *infoPtr, COMBOBOXEXITEMW const *cit)
{
    INT_PTR index;
    CBE_ITEMDATA *item;
    NMCOMBOBOXEXW nmcit;

    TRACE("\n");

    if (TRACE_ON(comboex)) COMBOEX_DumpInput (cit);

    /* get real index of item to insert */
    index = cit->iItem;
    if (index == -1) index = infoPtr->nb_items;
    if (index > infoPtr->nb_items) return -1;

    /* get zero-filled space and chain it in */
    if(!(item = Alloc (sizeof(*item)))) return -1;

    /* locate position to insert new item in */
    if (index == infoPtr->nb_items) {
        /* fast path for iItem = -1 */
        item->next = infoPtr->items;
    infoPtr->items = item;
    }
    else {
        INT i = infoPtr->nb_items-1;
    CBE_ITEMDATA *moving = infoPtr->items;

    while ((i > index) && moving) {
        moving = moving->next;
        i--;
    }
    if (!moving) {
        ERR("COMBOBOXEX item structures broken. Please report!\n");
        Free(item);
        return -1;
    }
    item->next = moving->next;
    moving->next = item;
    }

    /* fill in our hidden item structure */
    item->mask = cit->mask;
    if (item->mask & CBEIF_TEXT) {
    INT len = 0;

        if (is_textW(cit->pszText)) len = strlenW (cit->pszText);
    if (len > 0) {
            item->pszText = Alloc ((len + 1)*sizeof(WCHAR));
        if (!item->pszText) {
        Free(item);
        return -1;
        }
        strcpyW (item->pszText, cit->pszText);
    }
    else if (cit->pszText == LPSTR_TEXTCALLBACKW)
        item->pszText = LPSTR_TEXTCALLBACKW;
        item->cchTextMax = cit->cchTextMax;
    }
    if (item->mask & CBEIF_IMAGE)
        item->iImage = cit->iImage;
    if (item->mask & CBEIF_SELECTEDIMAGE)
        item->iSelectedImage = cit->iSelectedImage;
    if (item->mask & CBEIF_OVERLAY)
        item->iOverlay = cit->iOverlay;
    if (item->mask & CBEIF_INDENT)
        item->iIndent = cit->iIndent;
    if (item->mask & CBEIF_LPARAM)
        item->lParam = cit->lParam;
    infoPtr->nb_items++;

    if (TRACE_ON(comboex)) COMBOEX_DumpItem (item);

    SendMessageW (infoPtr->hwndCombo, CB_INSERTSTRING, cit->iItem, (LPARAM)item);

    memset (&nmcit.ceItem, 0, sizeof(nmcit.ceItem));
    nmcit.ceItem.mask=~0;
    COMBOEX_CopyItem (item, &nmcit.ceItem);
    COMBOEX_NotifyItem (infoPtr, CBEN_INSERTITEM, &nmcit);

    return index;

}


static INT COMBOEX_InsertItemA (COMBOEX_INFO *infoPtr, COMBOBOXEXITEMA const *cit)
{
    COMBOBOXEXITEMW citW;
    LPWSTR wstr = NULL;
    INT ret;

    memcpy(&citW,cit,sizeof(COMBOBOXEXITEMA));
    if (cit->mask & CBEIF_TEXT && is_textA(cit->pszText)) {
    INT len = MultiByteToWideChar (CP_ACP, 0, cit->pszText, -1, NULL, 0);
        wstr = Alloc ((len + 1)*sizeof(WCHAR));
    if (!wstr) return -1;
    MultiByteToWideChar (CP_ACP, 0, cit->pszText, -1, wstr, len);
    citW.pszText = wstr;
    }
    ret = COMBOEX_InsertItemW(infoPtr, &citW);

    Free(wstr);

    return ret;
}


static DWORD
COMBOEX_SetExtendedStyle (COMBOEX_INFO *infoPtr, DWORD mask, DWORD style)
{
    DWORD dwTemp;

    TRACE("(mask=x%08x, style=0x%08x)\n", mask, style);

    dwTemp = infoPtr->dwExtStyle;

    if (mask)
    infoPtr->dwExtStyle = (infoPtr->dwExtStyle & ~mask) | style;
    else
    infoPtr->dwExtStyle = style;

    /* see if we need to change the word break proc on the edit */
    if ((infoPtr->dwExtStyle ^ dwTemp) & CBES_EX_PATHWORDBREAKPROC)
        SetPathWordBreakProc(infoPtr->hwndEdit, 
            (infoPtr->dwExtStyle & CBES_EX_PATHWORDBREAKPROC) ? TRUE : FALSE);

    /* test if the control's appearance has changed */
    mask = CBES_EX_NOEDITIMAGE | CBES_EX_NOEDITIMAGEINDENT;
    if ((infoPtr->dwExtStyle & mask) != (dwTemp & mask)) {
    /* if state of EX_NOEDITIMAGE changes, invalidate all */
    TRACE("EX_NOEDITIMAGE state changed to %d\n",
          infoPtr->dwExtStyle & CBES_EX_NOEDITIMAGE);
    InvalidateRect (infoPtr->hwndSelf, NULL, TRUE);
    COMBOEX_AdjustEditPos (infoPtr);
    if (infoPtr->hwndEdit)
        InvalidateRect (infoPtr->hwndEdit, NULL, TRUE);
    }

    return dwTemp;
}


static HIMAGELIST COMBOEX_SetImageList (COMBOEX_INFO *infoPtr, HIMAGELIST himl)
{
    HIMAGELIST himlTemp = infoPtr->himl;

    TRACE("\n");

    infoPtr->himl = himl;

    COMBOEX_ReSize (infoPtr);
    InvalidateRect (infoPtr->hwndCombo, NULL, TRUE);

    /* reposition the Edit control based on whether icon exists */
    COMBOEX_AdjustEditPos (infoPtr);
    return himlTemp;
}

static BOOL COMBOEX_SetItemW (const COMBOEX_INFO *infoPtr, const COMBOBOXEXITEMW *cit)
{
    INT_PTR index = cit->iItem;
    CBE_ITEMDATA *item;

    if (TRACE_ON(comboex)) COMBOEX_DumpInput (cit);

    /* if item number requested does not exist then return failure */
    if ((index >= infoPtr->nb_items) || (index < -1)) return FALSE;

    /* if the item is the edit control and there is no edit control, skip */
    if ((index == -1) && !infoPtr->hwndEdit) return FALSE;

    if (!(item = COMBOEX_FindItem(infoPtr, index))) return FALSE;

    /* add/change stuff to the internal item structure */
    item->mask |= cit->mask;
    if (cit->mask & CBEIF_TEXT) {
    INT len = 0;

    COMBOEX_FreeText(item);
        if (is_textW(cit->pszText)) len = strlenW(cit->pszText);
    if (len > 0) {
            item->pszText = Alloc ((len + 1)*sizeof(WCHAR));
        if (!item->pszText) return FALSE;
        strcpyW(item->pszText, cit->pszText);
    } else if (cit->pszText == LPSTR_TEXTCALLBACKW)
        item->pszText = LPSTR_TEXTCALLBACKW;
        item->cchTextMax = cit->cchTextMax;
    }
    if (cit->mask & CBEIF_IMAGE)
        item->iImage = cit->iImage;
    if (cit->mask & CBEIF_SELECTEDIMAGE)
        item->iSelectedImage = cit->iSelectedImage;
    if (cit->mask & CBEIF_OVERLAY)
        item->iOverlay = cit->iOverlay;
    if (cit->mask & CBEIF_INDENT)
        item->iIndent = cit->iIndent;
    if (cit->mask & CBEIF_LPARAM)
        item->lParam = cit->lParam;

    if (TRACE_ON(comboex)) COMBOEX_DumpItem (item);

    /* if original request was to update edit control, do some fast foot work */
    if (cit->iItem == -1 && cit->mask & CBEIF_TEXT) {
    COMBOEX_SetEditText (infoPtr, item);
    RedrawWindow (infoPtr->hwndCombo, 0, 0, RDW_ERASE | RDW_INVALIDATE);
    }
    return TRUE;
}

static BOOL COMBOEX_SetItemA (const COMBOEX_INFO *infoPtr, COMBOBOXEXITEMA const *cit)
{
    COMBOBOXEXITEMW citW;
    LPWSTR wstr = NULL;
    BOOL ret;

    memcpy(&citW, cit, sizeof(COMBOBOXEXITEMA));
    if ((cit->mask & CBEIF_TEXT) && is_textA(cit->pszText)) {
    INT len = MultiByteToWideChar (CP_ACP, 0, cit->pszText, -1, NULL, 0);
        wstr = Alloc ((len + 1)*sizeof(WCHAR));
    if (!wstr) return FALSE;
    MultiByteToWideChar (CP_ACP, 0, cit->pszText, -1, wstr, len);
    citW.pszText = wstr;
    }
    ret = COMBOEX_SetItemW(infoPtr, &citW);

    Free(wstr);

    return ret;
}


static BOOL COMBOEX_SetUnicodeFormat (COMBOEX_INFO *infoPtr, BOOL value)
{
    BOOL bTemp = infoPtr->unicode;

    TRACE("to %s, was %s\n", value ? "TRUE":"FALSE", bTemp ? "TRUE":"FALSE");

    infoPtr->unicode = value;

    return bTemp;
}


/* ***  CB_xxx message support  *** */

static INT
COMBOEX_FindStringExact (const COMBOEX_INFO *infoPtr, INT start, LPCWSTR str)
{
    INT i;
    cmp_func_t cmptext = get_cmp_func(infoPtr);
    INT count = SendMessageW (infoPtr->hwndCombo, CB_GETCOUNT, 0, 0);

    /* now search from after starting loc and wrapping back to start */
    for(i=start+1; i<count; i++) {
    CBE_ITEMDATA *item = get_item_data(infoPtr, i);
    if ((LRESULT)item == CB_ERR) continue;
    if (cmptext(COMBOEX_GetText(infoPtr, item), str) == 0) return i;
    }
    for(i=0; i<=start; i++) {
    CBE_ITEMDATA *item = get_item_data(infoPtr, i);
    if ((LRESULT)item == CB_ERR) continue;
    if (cmptext(COMBOEX_GetText(infoPtr, item), str) == 0) return i;
    }
    return CB_ERR;
}


static DWORD_PTR COMBOEX_GetItemData (const COMBOEX_INFO *infoPtr, INT_PTR index)
{
    CBE_ITEMDATA const *item1;
    CBE_ITEMDATA const *item2;
    DWORD_PTR ret = 0;

    item1 = get_item_data(infoPtr, index);
    if ((item1 != NULL) && ((LRESULT)item1 != CB_ERR)) {
    item2 = COMBOEX_FindItem (infoPtr, index);
    if (item2 != item1) {
        ERR("data structures damaged!\n");
        return CB_ERR;
    }
    if (item1->mask & CBEIF_LPARAM) ret = item1->lParam;
    TRACE("returning 0x%08lx\n", ret);
    } else {
        ret = (DWORD_PTR)item1;
        TRACE("non-valid result from combo, returning 0x%08lx\n", ret);
    }
    return ret;
}


static INT COMBOEX_SetCursel (COMBOEX_INFO *infoPtr, INT_PTR index)
{
    CBE_ITEMDATA *item;
    INT sel;

    if (!(item = COMBOEX_FindItem(infoPtr, index)))
    return SendMessageW (infoPtr->hwndCombo, CB_SETCURSEL, index, 0);

    TRACE("selecting item %ld text=%s\n", index, debugstr_txt(item->pszText));
    infoPtr->selected = index;

    sel = (INT)SendMessageW (infoPtr->hwndCombo, CB_SETCURSEL, index, 0);
    COMBOEX_SetEditText (infoPtr, item);
    return sel;
}


static DWORD_PTR COMBOEX_SetItemData (const COMBOEX_INFO *infoPtr, INT_PTR index, DWORD_PTR data)
{
    CBE_ITEMDATA *item1;
    CBE_ITEMDATA const *item2;

    item1 = get_item_data(infoPtr, index);
    if ((item1 != NULL) && ((LRESULT)item1 != CB_ERR)) {
    item2 = COMBOEX_FindItem (infoPtr, index);
    if (item2 != item1) {
        ERR("data structures damaged!\n");
        return CB_ERR;
    }
    item1->mask |= CBEIF_LPARAM;
    item1->lParam = data;
    TRACE("setting lparam to 0x%08lx\n", data);
    return 0;
    }
    TRACE("non-valid result from combo %p\n", item1);
    return (DWORD_PTR)item1;
}


static INT COMBOEX_SetItemHeight (COMBOEX_INFO const *infoPtr, INT index, UINT height)
{
    RECT cb_wrect, cbx_wrect, cbx_crect;

    /* First, lets forward the message to the normal combo control
       just like Windows.     */
    if (infoPtr->hwndCombo)
       if (SendMessageW (infoPtr->hwndCombo, CB_SETITEMHEIGHT,
             index, height) == CB_ERR) return CB_ERR;

    GetWindowRect (infoPtr->hwndCombo, &cb_wrect);
    GetWindowRect (infoPtr->hwndSelf, &cbx_wrect);
    GetClientRect (infoPtr->hwndSelf, &cbx_crect);
    /* the height of comboex as height of the combo + comboex border */
    height = cb_wrect.bottom-cb_wrect.top
             + cbx_wrect.bottom-cbx_wrect.top
             - (cbx_crect.bottom-cbx_crect.top);
    TRACE("EX window=(%s), client=(%s)\n",
          wine_dbgstr_rect(&cbx_wrect), wine_dbgstr_rect(&cbx_crect));
    TRACE("CB window=(%s), EX setting=(0,0)-(%d,%d)\n",
          wine_dbgstr_rect(&cbx_wrect), cbx_wrect.right-cbx_wrect.left, height);
    SetWindowPos (infoPtr->hwndSelf, HWND_TOP, 0, 0,
          cbx_wrect.right-cbx_wrect.left, height,
          SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOMOVE);

    return 0;
}


/* ***  WM_xxx message support  *** */


static LRESULT COMBOEX_Create (HWND hwnd, CREATESTRUCTA const *cs)
{
    static const WCHAR NIL[] = { 0 };
    COMBOEX_INFO *infoPtr;
    LOGFONTW mylogfont;
    RECT win_rect;
    INT i;

    /* allocate memory for info structure */
    infoPtr = Alloc (sizeof(COMBOEX_INFO));
    if (!infoPtr) return -1;

    /* initialize info structure */
    /* note that infoPtr is allocated zero-filled */

    infoPtr->hwndSelf = hwnd;
    infoPtr->selected = -1;

    infoPtr->unicode = IsWindowUnicode (hwnd);
    infoPtr->hwndNotify = cs->hwndParent;

    i = SendMessageW(infoPtr->hwndNotify, WM_NOTIFYFORMAT, (WPARAM)hwnd, NF_QUERY);
    if ((i != NFR_ANSI) && (i != NFR_UNICODE)) {
    WARN("wrong response to WM_NOTIFYFORMAT (%d), assuming ANSI\n", i);
    i = NFR_ANSI;
    }
    infoPtr->NtfUnicode = (i == NFR_UNICODE);

    SetWindowLongPtrW (hwnd, 0, (DWORD_PTR)infoPtr);

    if (TRACE_ON(comboex)) {
    RECT client, rect;
    GetWindowRect(hwnd, &rect);
    GetClientRect(hwnd, &client);
    TRACE("EX window=(%s), client=(%s)\n",
        wine_dbgstr_rect(&rect), wine_dbgstr_rect(&client));
    }

    /* Native version of ComboEx creates the ComboBox with DROPDOWNLIST */
    /* specified. It then creates it's own version of the EDIT control  */
    /* and makes the ComboBox the parent. This is because a normal      */
    /* DROPDOWNLIST does not have an EDIT control, but we need one.     */
    /* We also need to place the edit control at the proper location    */
    /* (allow space for the icons).                                     */

    infoPtr->hwndCombo = CreateWindowW (WC_COMBOBOXW, NIL,
             /* following line added to match native */
                         WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_VSCROLL |
                         CBS_NOINTEGRALHEIGHT | CBS_DROPDOWNLIST |
             /* was base and is necessary */
             WS_CHILD | WS_VISIBLE | CBS_OWNERDRAWFIXED |
             GetWindowLongW (hwnd, GWL_STYLE),
             cs->y, cs->x, cs->cx, cs->cy, hwnd,
             (HMENU) GetWindowLongPtrW (hwnd, GWLP_ID),
             (HINSTANCE)GetWindowLongPtrW (hwnd, GWLP_HINSTANCE), NULL);

    /*
     * native does the following at this point according to trace:
     *  GetWindowThreadProcessId(hwndCombo,0)
     *  GetCurrentThreadId()
     *  GetWindowThreadProcessId(hwndCombo, &???)
     *  GetCurrentProcessId()
     */

    SetWindowSubclass(infoPtr->hwndCombo, COMBOEX_ComboWndProc, COMBO_SUBCLASSID,
                      (DWORD_PTR)hwnd);
    infoPtr->font = (HFONT)SendMessageW (infoPtr->hwndCombo, WM_GETFONT, 0, 0);

    /*
     * Now create our own EDIT control so we can position it.
     * It is created only for CBS_DROPDOWN style
     */
    if ((cs->style & CBS_DROPDOWNLIST) == CBS_DROPDOWN) {
    infoPtr->hwndEdit = CreateWindowExW (0, WC_EDITW, NIL,
            WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | ES_AUTOHSCROLL,
            0, 0, 0, 0,  /* will set later */
            infoPtr->hwndCombo,
            (HMENU) GetWindowLongPtrW (hwnd, GWLP_ID),
            (HINSTANCE)GetWindowLongPtrW (hwnd, GWLP_HINSTANCE), NULL);

    /* native does the following at this point according to trace:
     *  GetWindowThreadProcessId(hwndEdit,0)
     *  GetCurrentThreadId()
     *  GetWindowThreadProcessId(hwndEdit, &???)
     *  GetCurrentProcessId()
     */
    SetWindowSubclass(infoPtr->hwndEdit, COMBOEX_EditWndProc, EDIT_SUBCLASSID,
                      (DWORD_PTR)hwnd);

    infoPtr->font = (HFONT)SendMessageW(infoPtr->hwndCombo, WM_GETFONT, 0, 0);
    }

    /*
     * Locate the default font if necessary and then set it in
     * all associated controls
     */
    if (!infoPtr->font) {
    SystemParametersInfoW (SPI_GETICONTITLELOGFONT, sizeof(mylogfont),
                   &mylogfont, 0);
    infoPtr->font = infoPtr->defaultFont = CreateFontIndirectW (&mylogfont);
    }
    SendMessageW (infoPtr->hwndCombo, WM_SETFONT, (WPARAM)infoPtr->font, 0);
    if (infoPtr->hwndEdit) {
    SendMessageW (infoPtr->hwndEdit, WM_SETFONT, (WPARAM)infoPtr->font, 0);
       SendMessageW (infoPtr->hwndEdit, EM_SETMARGINS, EC_USEFONTINFO, 0);
    }

    COMBOEX_ReSize (infoPtr);

    /* Above is fairly certain, below is much less certain. */

    GetWindowRect(hwnd, &win_rect);

    if (TRACE_ON(comboex)) {
    RECT client, rect;
    GetClientRect(hwnd, &client);
    GetWindowRect(infoPtr->hwndCombo, &rect);
    TRACE("EX window=(%s) client=(%s) CB wnd=(%s)\n",
        wine_dbgstr_rect(&win_rect), wine_dbgstr_rect(&client),
        wine_dbgstr_rect(&rect));
    }
    SetWindowPos(infoPtr->hwndCombo, HWND_TOP, 0, 0,
         win_rect.right - win_rect.left, win_rect.bottom - win_rect.top,
         SWP_NOACTIVATE | SWP_NOREDRAW);

    GetWindowRect(infoPtr->hwndCombo, &win_rect);
    TRACE("CB window=(%s)\n", wine_dbgstr_rect(&win_rect));
    SetWindowPos(hwnd, HWND_TOP, 0, 0,
         win_rect.right - win_rect.left, win_rect.bottom - win_rect.top,
         SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOMOVE);

    COMBOEX_AdjustEditPos (infoPtr);

    /*
     * Create an item structure to represent the data in the
     * EDIT control. It is allocated zero-filled.
     */
    infoPtr->edit = Alloc (sizeof (CBE_ITEMDATA));
    if (!infoPtr->edit) {
    COMBOEX_Destroy(infoPtr);
    return -1;
    }

    return 0;
}


static LRESULT COMBOEX_Command (COMBOEX_INFO *infoPtr, WPARAM wParam)
{
    LRESULT lret;
    INT command = HIWORD(wParam);
    CBE_ITEMDATA *item = 0;
    WCHAR wintext[520];
    INT cursel, n;
    INT_PTR oldItem;
    NMCBEENDEDITW cbeend;
    DWORD oldflags;
    HWND parent = infoPtr->hwndNotify;

    TRACE("for command %d\n", command);

    switch (command)
    {
    case CBN_DROPDOWN:
        SetFocus (infoPtr->hwndCombo);
        ShowWindow (infoPtr->hwndEdit, SW_HIDE);
        infoPtr->flags |= WCBE_ACTEDIT;
        return SendMessageW (parent, WM_COMMAND, wParam, (LPARAM)infoPtr->hwndSelf);
    case CBN_CLOSEUP:
    SendMessageW (parent, WM_COMMAND, wParam, (LPARAM)infoPtr->hwndSelf);
    /*
     * from native trace of first dropdown after typing in URL in IE4
     *  CB_GETCURSEL(Combo)
     *  GetWindowText(Edit)
     *  CB_GETCURSEL(Combo)
     *  CB_GETCOUNT(Combo)
     *  CB_GETITEMDATA(Combo, n)
     *  WM_NOTIFY(parent, CBEN_ENDEDITA|W)
     *  CB_GETCURSEL(Combo)
     *  CB_SETCURSEL(COMBOEX, n)
     *  SetFocus(Combo)
     * the rest is supposition
     */
    ShowWindow (infoPtr->hwndEdit, SW_SHOW);
    InvalidateRect (infoPtr->hwndCombo, 0, TRUE);
    if (infoPtr->hwndEdit) InvalidateRect (infoPtr->hwndEdit, 0, TRUE);
    cursel = SendMessageW (infoPtr->hwndCombo, CB_GETCURSEL, 0, 0);
    if (cursel == -1) {
            cmp_func_t cmptext = get_cmp_func(infoPtr);
        /* find match from edit against those in Combobox */
        GetWindowTextW (infoPtr->hwndEdit, wintext, 520);
        n = SendMessageW (infoPtr->hwndCombo, CB_GETCOUNT, 0, 0);
        for (cursel = 0; cursel < n; cursel++){
                item = get_item_data(infoPtr, cursel);
        if ((INT_PTR)item == CB_ERR) break;
        if (!cmptext(COMBOEX_GetText(infoPtr, item), wintext)) break;
        }
        if ((cursel == n) || ((INT_PTR)item == CB_ERR)) {
        TRACE("failed to find match??? item=%p cursel=%d\n",
              item, cursel);
        if (infoPtr->hwndEdit) SetFocus(infoPtr->hwndEdit);
        return 0;
        }
    }
    else {
            item = get_item_data(infoPtr, cursel);
        if ((INT_PTR)item == CB_ERR) {
        TRACE("failed to find match??? item=%p cursel=%d\n",
              item, cursel);
        if (infoPtr->hwndEdit) SetFocus(infoPtr->hwndEdit);
        return 0;
        }
    }

    /* Save flags for testing and reset them */
    oldflags = infoPtr->flags;
    infoPtr->flags &= ~(WCBE_ACTEDIT | WCBE_EDITCHG);

    if (oldflags & WCBE_ACTEDIT) {
        cbeend.fChanged = (oldflags & WCBE_EDITCHG);
        cbeend.iNewSelection = SendMessageW (infoPtr->hwndCombo,
                         CB_GETCURSEL, 0, 0);
        cbeend.iWhy = CBENF_DROPDOWN;

        if (COMBOEX_NotifyEndEdit (infoPtr, &cbeend, COMBOEX_GetText(infoPtr, item))) return 0;
    }

    /* if selection has changed the set the new current selection */
    cursel = SendMessageW (infoPtr->hwndCombo, CB_GETCURSEL, 0, 0);
    if ((oldflags & WCBE_EDITCHG) || (cursel != infoPtr->selected)) {
        infoPtr->selected = cursel;
        SendMessageW (infoPtr->hwndSelf, CB_SETCURSEL, cursel, 0);
        SetFocus(infoPtr->hwndCombo);
    }
    return 0;

    case CBN_SELCHANGE:
    /*
     * CB_GETCURSEL(Combo)
     * CB_GETITEMDATA(Combo)   < simulated by COMBOEX_FindItem
     * lstrlenA
     * WM_SETTEXT(Edit)
     * WM_GETTEXTLENGTH(Edit)
     * WM_GETTEXT(Edit)
     * EM_SETSEL(Edit, 0,0)
     * WM_GETTEXTLENGTH(Edit)
     * WM_GETTEXT(Edit)
     * EM_SETSEL(Edit, 0,len)
     * return WM_COMMAND to parent
     */
    oldItem = SendMessageW (infoPtr->hwndCombo, CB_GETCURSEL, 0, 0);
    if (!(item = COMBOEX_FindItem(infoPtr, oldItem))) {
        ERR("item %ld not found. Problem!\n", oldItem);
        break;
    }
    infoPtr->selected = oldItem;
    COMBOEX_SetEditText (infoPtr, item);
    return SendMessageW (parent, WM_COMMAND, wParam, (LPARAM)infoPtr->hwndSelf);

    case CBN_SELENDOK:
    case CBN_SELENDCANCEL:
    /*
     * We have to change the handle since we are the control
     * issuing the message. IE4 depends on this.
     */
    return SendMessageW (parent, WM_COMMAND, wParam, (LPARAM)infoPtr->hwndSelf);

    case CBN_KILLFOCUS:
    /*
     * from native trace:
     *
     *  pass to parent
     *  WM_GETTEXT(Edit, 104)
     *  CB_GETCURSEL(Combo) rets -1
     *  WM_NOTIFY(CBEN_ENDEDITA) with CBENF_KILLFOCUS
     *  CB_GETCURSEL(Combo)
     *  InvalidateRect(Combo, 0, 0)
     *  return 0
     */
    SendMessageW (parent, WM_COMMAND, wParam, (LPARAM)infoPtr->hwndSelf);
    if (infoPtr->flags & WCBE_ACTEDIT) {
        GetWindowTextW (infoPtr->hwndEdit, wintext, 260);
        cbeend.fChanged = (infoPtr->flags & WCBE_EDITCHG);
        cbeend.iNewSelection = SendMessageW (infoPtr->hwndCombo,
                         CB_GETCURSEL, 0, 0);
        cbeend.iWhy = CBENF_KILLFOCUS;

        infoPtr->flags &= ~(WCBE_ACTEDIT | WCBE_EDITCHG);
        if (COMBOEX_NotifyEndEdit (infoPtr, &cbeend, wintext)) return 0;
    }
    /* possible CB_GETCURSEL */
    InvalidateRect (infoPtr->hwndCombo, 0, 0);
    return 0;

    case CBN_SETFOCUS:
        return SendMessageW (parent, WM_COMMAND, wParam, (LPARAM)infoPtr->hwndSelf);

    default:
    /*
     * We have to change the handle since we are the control
     * issuing the message. IE4 depends on this.
     * We also need to set the focus back to the Edit control
     * after passing the command to the parent of the ComboEx.
     */
    lret = SendMessageW (parent, WM_COMMAND, wParam, (LPARAM)infoPtr->hwndSelf);
    if (infoPtr->hwndEdit) SetFocus(infoPtr->hwndEdit);
    return lret;
    }
    return 0;
}


static BOOL COMBOEX_WM_DeleteItem (COMBOEX_INFO *infoPtr, DELETEITEMSTRUCT const *dis)
{
    CBE_ITEMDATA *item, *olditem;
    NMCOMBOBOXEXW nmcit;
    UINT i;

    TRACE("CtlType=%08x, CtlID=%08x, itemID=%08x, hwnd=%p, data=%08lx\n",
      dis->CtlType, dis->CtlID, dis->itemID, dis->hwndItem, dis->itemData);

    if (dis->itemID >= infoPtr->nb_items) return FALSE;

    olditem = infoPtr->items;
    i = infoPtr->nb_items - 1;

    if (i == dis->itemID) {
    infoPtr->items = infoPtr->items->next;
    }
    else {
    item = olditem;
    i--;

    /* find the prior item in the list */
    while (item->next && (i > dis->itemID)) {
        item = item->next;
        i--;
    }
    if (!item->next || (i != dis->itemID)) {
        ERR("COMBOBOXEX item structures broken. Please report!\n");
        return FALSE;
    }
    olditem = item->next;
    item->next = item->next->next;
    }
    infoPtr->nb_items--;

    memset (&nmcit.ceItem, 0, sizeof(nmcit.ceItem));
    nmcit.ceItem.mask=~0;
    COMBOEX_CopyItem (olditem, &nmcit.ceItem);
    COMBOEX_NotifyItem (infoPtr, CBEN_DELETEITEM, &nmcit);

    COMBOEX_FreeText(olditem);
    Free(olditem);

    return TRUE;
}


static LRESULT COMBOEX_DrawItem (const COMBOEX_INFO *infoPtr, DRAWITEMSTRUCT const *dis)
{
    static const WCHAR nil[] = { 0 };
    CBE_ITEMDATA *item = 0;
    SIZE txtsize;
    RECT rect;
    LPCWSTR str = nil;
    UINT xbase, x, y;
    INT len;
    COLORREF nbkc, ntxc, bkc, txc;
    int drawimage, drawstate, xioff;

    TRACE("DRAWITEMSTRUCT: CtlType=0x%08x CtlID=0x%08x\n",
      dis->CtlType, dis->CtlID);
    TRACE("itemID=0x%08x itemAction=0x%08x itemState=0x%08x\n",
      dis->itemID, dis->itemAction, dis->itemState);
    TRACE("hWnd=%p hDC=%p (%s) itemData=0x%08lx\n",
          dis->hwndItem, dis->hDC, wine_dbgstr_rect(&dis->rcItem), dis->itemData);

    /* MSDN says:                                                       */
    /*     "itemID - Specifies the menu item identifier for a menu      */
    /*      item or the index of the item in a list box or combo box.   */
    /*      For an empty list box or combo box, this member can be -1.  */
    /*      This allows the application to draw only the focus          */
    /*      rectangle at the coordinates specified by the rcItem        */
    /*      member even though there are no items in the control.       */
    /*      This indicates to the user whether the list box or combo    */
    /*      box has the focus. How the bits are set in the itemAction   */
    /*      member determines whether the rectangle is to be drawn as   */
    /*      though the list box or combo box has the focus.             */
    if (dis->itemID == 0xffffffff) {
    if ( ( (dis->itemAction & ODA_FOCUS) && (dis->itemState & ODS_SELECTED)) ||
         ( (dis->itemAction & (ODA_SELECT | ODA_DRAWENTIRE)) && (dis->itemState & ODS_FOCUS) ) ) {

            TRACE("drawing item -1 special focus, rect=(%s)\n",
                  wine_dbgstr_rect(&dis->rcItem));
    }
    else if ((dis->CtlType == ODT_COMBOBOX) &&
         (dis->itemAction == ODA_DRAWENTIRE)) {
        /* draw of edit control data */

        if (TRACE_ON(comboex)) {
        RECT exrc, cbrc, edrc;
        GetWindowRect (infoPtr->hwndSelf, &exrc);
        GetWindowRect (infoPtr->hwndCombo, &cbrc);
        edrc.left = edrc.top = edrc.right = edrc.bottom = -1;
        if (infoPtr->hwndEdit) GetWindowRect (infoPtr->hwndEdit, &edrc);
                TRACE("window rects ex=(%s), cb=(%s), ed=(%s)\n",
                      wine_dbgstr_rect(&exrc), wine_dbgstr_rect(&cbrc),
                      wine_dbgstr_rect(&edrc));
        }
    }
    else {
            ERR("NOT drawing item  -1 special focus, rect=(%s), action=%08x, state=%08x\n",
                wine_dbgstr_rect(&dis->rcItem),
                dis->itemAction, dis->itemState);
        return 0;
    }
    }

    /* If draw item is -1 (edit control) setup the item pointer */
    if (dis->itemID == 0xffffffff) {
    item = infoPtr->edit;

    if (infoPtr->hwndEdit) {
        INT len;

        /* free previous text of edit item */
        COMBOEX_FreeText(item);
        item->mask &= ~CBEIF_TEXT;
        if( (len = GetWindowTextLengthW(infoPtr->hwndEdit)) ) {
        item->mask |= CBEIF_TEXT;
                item->pszText = Alloc ((len + 1)*sizeof(WCHAR));
        if (item->pszText)
            GetWindowTextW(infoPtr->hwndEdit, item->pszText, len+1);

           TRACE("edit control hwndEdit=%p, text len=%d str=%s\n",
             infoPtr->hwndEdit, len, debugstr_txt(item->pszText));
        }
    }
    }


    /* if the item pointer is not set, then get the data and locate it */
    if (!item) {
        item = get_item_data(infoPtr, dis->itemID);
    if (item == (CBE_ITEMDATA *)CB_ERR) {
        ERR("invalid item for id %d\n", dis->itemID);
        return 0;
    }
    }

    if (TRACE_ON(comboex)) COMBOEX_DumpItem (item);

    xbase = CBE_STARTOFFSET;
    if ((item->mask & CBEIF_INDENT) && (dis->itemState & ODS_COMBOEXLBOX)) {
    INT indent = item->iIndent;
    if (indent == I_INDENTCALLBACK) {
        NMCOMBOBOXEXW nmce;
        ZeroMemory(&nmce, sizeof(nmce));
        nmce.ceItem.mask = CBEIF_INDENT;
        nmce.ceItem.lParam = item->lParam;
        nmce.ceItem.iItem = dis->itemID;
        COMBOEX_NotifyItem(infoPtr, CBEN_GETDISPINFOW, &nmce);
        if (nmce.ceItem.mask & CBEIF_DI_SETITEM)
        item->iIndent = nmce.ceItem.iIndent;
        indent = nmce.ceItem.iIndent;
    }
        xbase += (indent * CBE_INDENT);
    }

    drawimage = -2;
    drawstate = ILD_NORMAL;
    if (item->mask & CBEIF_IMAGE)
    drawimage = item->iImage;
    if (dis->itemState & ODS_COMBOEXLBOX) {
    /* drawing listbox entry */
    if (dis->itemState & ODS_SELECTED) {
        if (item->mask & CBEIF_SELECTEDIMAGE)
            drawimage = item->iSelectedImage;
        drawstate = ILD_SELECTED;
    }
    } else {
    /* drawing combo/edit entry */
    if (IsWindowVisible(infoPtr->hwndEdit)) {
        /* if we have an edit control, the slave the
             * selection state to the Edit focus state
         */
        if (infoPtr->flags & WCBE_EDITFOCUSED) {
            if (item->mask & CBEIF_SELECTEDIMAGE)
            drawimage = item->iSelectedImage;
        drawstate = ILD_SELECTED;
        }
    } else {
        /* if we don't have an edit control, use
         * the requested state.
         */
        if (dis->itemState & ODS_SELECTED) {
        if (item->mask & CBEIF_SELECTEDIMAGE)
            drawimage = item->iSelectedImage;
        drawstate = ILD_SELECTED;
        }
    }
    }

    if (infoPtr->himl && !(infoPtr->dwExtStyle & CBES_EX_NOEDITIMAGEINDENT)) {
        IMAGEINFO iinfo;
        iinfo.rcImage.left = iinfo.rcImage.right = 0;
    ImageList_GetImageInfo(infoPtr->himl, 0, &iinfo);
    xioff = iinfo.rcImage.right - iinfo.rcImage.left + CBE_SEP;
    }  else xioff = 0;

    /* setup pointer to text to be drawn */
    str = COMBOEX_GetText(infoPtr, item);
    if (!str) str = nil;

    len = strlenW (str);
    GetTextExtentPoint32W (dis->hDC, str, len, &txtsize);

    if (dis->itemAction & (ODA_SELECT | ODA_DRAWENTIRE)) {
    int overlay = item->iOverlay;

        if (drawimage == I_IMAGECALLBACK) {
        NMCOMBOBOXEXW nmce;
        ZeroMemory(&nmce, sizeof(nmce));
        nmce.ceItem.mask = (drawstate == ILD_NORMAL) ? CBEIF_IMAGE : CBEIF_SELECTEDIMAGE;
        nmce.ceItem.lParam = item->lParam;
        nmce.ceItem.iItem = dis->itemID;
        COMBOEX_NotifyItem(infoPtr, CBEN_GETDISPINFOW, &nmce);
        if (drawstate == ILD_NORMAL) {
            if (nmce.ceItem.mask & CBEIF_DI_SETITEM) item->iImage = nmce.ceItem.iImage;
            drawimage = nmce.ceItem.iImage;
        } else if (drawstate == ILD_SELECTED) {
            if (nmce.ceItem.mask & CBEIF_DI_SETITEM) item->iSelectedImage = nmce.ceItem.iSelectedImage;
            drawimage =  nmce.ceItem.iSelectedImage;
        } else ERR("Bad draw state = %d\n", drawstate);
        }

    if (overlay == I_IMAGECALLBACK) {
        NMCOMBOBOXEXW nmce;
        ZeroMemory(&nmce, sizeof(nmce));
        nmce.ceItem.mask = CBEIF_OVERLAY;
        nmce.ceItem.lParam = item->lParam;
        nmce.ceItem.iItem = dis->itemID;
        COMBOEX_NotifyItem(infoPtr, CBEN_GETDISPINFOW, &nmce);
        if (nmce.ceItem.mask & CBEIF_DI_SETITEM)
        item->iOverlay = nmce.ceItem.iOverlay;
        overlay = nmce.ceItem.iOverlay;
    }

    if (drawimage >= 0 &&
        !(infoPtr->dwExtStyle & (CBES_EX_NOEDITIMAGE | CBES_EX_NOEDITIMAGEINDENT))) {
        if (overlay > 0) ImageList_SetOverlayImage (infoPtr->himl, overlay, 1);
        ImageList_Draw (infoPtr->himl, drawimage, dis->hDC, xbase, dis->rcItem.top,
                drawstate | (overlay > 0 ? INDEXTOOVERLAYMASK(1) : 0));
    }

    /* now draw the text */
    if (!IsWindowVisible (infoPtr->hwndEdit)) {
        nbkc = (dis->itemState & ODS_SELECTED) ?
                comctl32_color.clrHighlight : comctl32_color.clrWindow;
        bkc = SetBkColor (dis->hDC, nbkc);
        ntxc = (dis->itemState & ODS_SELECTED) ?
                comctl32_color.clrHighlightText : comctl32_color.clrWindowText;
        txc = SetTextColor (dis->hDC, ntxc);
        x = xbase + xioff;
        y = dis->rcItem.top +
            (dis->rcItem.bottom - dis->rcItem.top - txtsize.cy) / 2;
        rect.left = x;
        rect.right = x + txtsize.cx;
        rect.top = dis->rcItem.top + 1;
        rect.bottom = dis->rcItem.bottom - 1;
            TRACE("drawing item %d text, rect=(%s)\n",
                  dis->itemID, wine_dbgstr_rect(&rect));
        ExtTextOutW (dis->hDC, x, y, ETO_OPAQUE | ETO_CLIPPED,
                 &rect, str, len, 0);
        SetBkColor (dis->hDC, bkc);
        SetTextColor (dis->hDC, txc);
    }
    }

    if (dis->itemAction & ODA_FOCUS) {
    rect.left = xbase + xioff - 1;
    rect.right = rect.left + txtsize.cx + 2;
    rect.top = dis->rcItem.top;
    rect.bottom = dis->rcItem.bottom;
    DrawFocusRect(dis->hDC, &rect);
    }

    return 0;
}


static void COMBOEX_ResetContent (COMBOEX_INFO *infoPtr)
{
    if (infoPtr->items)
    {
        CBE_ITEMDATA *item, *next;

        item = infoPtr->items;
        while (item) {
            next = item->next;
            COMBOEX_FreeText (item);
            Free (item);
            item = next;
        }
        infoPtr->items = 0;
    }

    infoPtr->selected = -1;
    infoPtr->nb_items = 0;
}


static LRESULT COMBOEX_Destroy (COMBOEX_INFO *infoPtr)
{
    if (infoPtr->hwndCombo)
        RemoveWindowSubclass(infoPtr->hwndCombo, COMBOEX_ComboWndProc, COMBO_SUBCLASSID);

    if (infoPtr->hwndEdit)
        RemoveWindowSubclass(infoPtr->hwndEdit, COMBOEX_EditWndProc, EDIT_SUBCLASSID);

    COMBOEX_FreeText (infoPtr->edit);
    Free (infoPtr->edit);
    infoPtr->edit = 0;

    COMBOEX_ResetContent (infoPtr);

    if (infoPtr->defaultFont)
    DeleteObject (infoPtr->defaultFont);

    SetWindowLongPtrW (infoPtr->hwndSelf, 0, 0);

    /* free comboex info data */
    Free (infoPtr);

    return 0;
}


static LRESULT COMBOEX_Enable (COMBOEX_INFO *infoPtr, BOOL enable)
{
    TRACE("hwnd=%p, enable=%s\n", infoPtr->hwndSelf, enable ? "TRUE":"FALSE");

    if (infoPtr->hwndEdit)
       EnableWindow(infoPtr->hwndEdit, enable);

    EnableWindow(infoPtr->hwndCombo, enable);

    /* Force the control to repaint when the enabled state changes. */
    InvalidateRect(infoPtr->hwndSelf, NULL, TRUE);

    return 1;
}


static LRESULT COMBOEX_MeasureItem (COMBOEX_INFO const *infoPtr, MEASUREITEMSTRUCT *mis)
{
    static const WCHAR strW[] = { 'W', 0 };
    SIZE mysize;
    HDC hdc;

    hdc = GetDC (0);
    GetTextExtentPointW (hdc, strW, 1, &mysize);
    ReleaseDC (0, hdc);
    mis->itemHeight = mysize.cy + CBE_EXTRA;

    TRACE("adjusted height hwnd=%p, height=%d\n",
      infoPtr->hwndSelf, mis->itemHeight);

    return 0;
}


static LRESULT COMBOEX_NCCreate (HWND hwnd)
{
    /* WARNING: The COMBOEX_INFO structure is not yet created */
    DWORD oldstyle, newstyle;

    oldstyle = (DWORD)GetWindowLongW (hwnd, GWL_STYLE);
    newstyle = oldstyle & ~(WS_VSCROLL | WS_HSCROLL | WS_BORDER);
    if (newstyle != oldstyle) {
    TRACE("req style %08x, resetting style %08x\n",
          oldstyle, newstyle);
    SetWindowLongW (hwnd, GWL_STYLE, newstyle);
    }
    return 1;
}


static LRESULT COMBOEX_NotifyFormat (COMBOEX_INFO *infoPtr, LPARAM lParam)
{
    if (lParam == NF_REQUERY) {
    INT i = SendMessageW(infoPtr->hwndNotify,
             WM_NOTIFYFORMAT, (WPARAM)infoPtr->hwndSelf, NF_QUERY);
    infoPtr->NtfUnicode = (i == NFR_UNICODE) ? 1 : 0;
    }
    return infoPtr->NtfUnicode ? NFR_UNICODE : NFR_ANSI;
}


static LRESULT COMBOEX_Size (COMBOEX_INFO *infoPtr, INT width, INT height)
{
    TRACE("(width=%d, height=%d)\n", width, height);

    MoveWindow (infoPtr->hwndCombo, 0, 0, width, height, TRUE);

    COMBOEX_AdjustEditPos (infoPtr);

    return 0;
}


static LRESULT COMBOEX_SetRedraw(const COMBOEX_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
{
    LRESULT ret = DefWindowProcW( infoPtr->hwndSelf, WM_SETREDRAW, wParam, lParam );
    if (wParam) RedrawWindow( infoPtr->hwndSelf, NULL, 0, RDW_INVALIDATE|RDW_ERASE|RDW_ALLCHILDREN );
    return ret;
}


static LRESULT COMBOEX_WindowPosChanging (const COMBOEX_INFO *infoPtr, WINDOWPOS *wp)
{
    RECT cbx_wrect, cbx_crect, cb_wrect;
    INT width, height;

    GetWindowRect (infoPtr->hwndSelf, &cbx_wrect);
    GetClientRect (infoPtr->hwndSelf, &cbx_crect);
    GetWindowRect (infoPtr->hwndCombo, &cb_wrect);

    /* width is winpos value + border width of comboex */
    width = wp->cx
        + (cbx_wrect.right-cbx_wrect.left)
            - (cbx_crect.right-cbx_crect.left);

    TRACE("winpos=(%d,%d %dx%d) flags=0x%08x\n",
      wp->x, wp->y, wp->cx, wp->cy, wp->flags);
    TRACE("EX window=(%s), client=(%s)\n",
          wine_dbgstr_rect(&cbx_wrect), wine_dbgstr_rect(&cbx_crect));
    TRACE("CB window=(%s), EX setting=(0,0)-(%d,%d)\n",
          wine_dbgstr_rect(&cbx_wrect), width, cb_wrect.bottom-cb_wrect.top);

    if (width) SetWindowPos (infoPtr->hwndCombo, HWND_TOP, 0, 0,
                 width,
                 cb_wrect.bottom-cb_wrect.top,
                 SWP_NOACTIVATE);

    GetWindowRect (infoPtr->hwndCombo, &cb_wrect);

    /* height is combo window height plus border width of comboex */
    height =   (cb_wrect.bottom-cb_wrect.top)
         + (cbx_wrect.bottom-cbx_wrect.top)
             - (cbx_crect.bottom-cbx_crect.top);
    wp->cy = height;
    if (infoPtr->hwndEdit) {
    COMBOEX_AdjustEditPos (infoPtr);
    InvalidateRect (infoPtr->hwndCombo, 0, TRUE);
    }

    return 0;
}

static LRESULT CALLBACK
COMBOEX_EditWndProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam,
                     UINT_PTR uId, DWORD_PTR ref_data)
{
    COMBOEX_INFO *infoPtr = COMBOEX_GetInfoPtr ((HWND)ref_data);
    NMCBEENDEDITW cbeend;
    WCHAR edit_text[260];
    COLORREF obkc;
    HDC hDC;
    RECT rect;
    LRESULT lret;

    TRACE("hwnd=%p msg=%x wparam=%lx lParam=%lx, info_ptr=%p\n",
      hwnd, uMsg, wParam, lParam, infoPtr);

    if (!infoPtr) return 0;

    switch (uMsg)
    {

    case WM_CHAR:
        /* handle (ignore) the return character */
        if (wParam == VK_RETURN) return 0;
        /* all other characters pass into the real Edit */
        return DefSubclassProc(hwnd, uMsg, wParam, lParam);

    case WM_ERASEBKGND:
        /*
         * The following was determined by traces of the native
         */
            hDC = (HDC) wParam;
        obkc = SetBkColor (hDC, comctl32_color.clrWindow);
            GetClientRect (hwnd, &rect);
            TRACE("erasing (%s)\n", wine_dbgstr_rect(&rect));
        ExtTextOutW (hDC, 0, 0, ETO_OPAQUE, &rect, 0, 0, 0);
            SetBkColor (hDC, obkc);
        return DefSubclassProc(hwnd, uMsg, wParam, lParam);

    case WM_KEYDOWN: {
        INT_PTR oldItem, selected;
        CBE_ITEMDATA *item;

        switch ((INT)wParam)
        {
        case VK_ESCAPE:
        /* native version seems to do following for COMBOEX */
        /*
         *   GetWindowTextW(Edit,&?, 0x104)             x
         *   CB_GETCURSEL to Combo rets -1              x
         *   WM_NOTIFY to COMBOEX parent (rebar)        x
         *     (CBEN_ENDEDIT{A|W}
         *      fChanged = FALSE                        x
         *      inewSelection = -1                      x
         *      txt="www.hoho"                          x
         *      iWhy = 3                                x
         *   CB_GETCURSEL to Combo rets -1              x
         *   InvalidateRect(Combo, 0)                   x
         *   WM_SETTEXT to Edit                         x
         *   EM_SETSEL to Edit (0,0)                    x
         *   EM_SETSEL to Edit (0,-1)                   x
         *   RedrawWindow(Combo, 0, 0, 5)               x
         */
        TRACE("special code for VK_ESCAPE\n");

        GetWindowTextW (infoPtr->hwndEdit, edit_text, 260);

        infoPtr->flags &= ~(WCBE_ACTEDIT | WCBE_EDITCHG);
        cbeend.fChanged = FALSE;
        cbeend.iNewSelection = SendMessageW (infoPtr->hwndCombo,
                             CB_GETCURSEL, 0, 0);
        cbeend.iWhy = CBENF_ESCAPE;

        if (COMBOEX_NotifyEndEdit (infoPtr, &cbeend, edit_text)) return 0;
        oldItem = SendMessageW (infoPtr->hwndCombo, CB_GETCURSEL, 0, 0);
        InvalidateRect (infoPtr->hwndCombo, 0, 0);
        if (!(item = COMBOEX_FindItem(infoPtr, oldItem))) {
            ERR("item %ld not found. Problem!\n", oldItem);
            break;
        }
        infoPtr->selected = oldItem;
        COMBOEX_SetEditText (infoPtr, item);
        RedrawWindow (infoPtr->hwndCombo, 0, 0, RDW_ERASE |
                  RDW_INVALIDATE);
        break;

        case VK_RETURN:
        /* native version seems to do following for COMBOEX */
        /*
         *   GetWindowTextW(Edit,&?, 0x104)             x
         *   CB_GETCURSEL to Combo  rets -1             x
         *   CB_GETCOUNT to Combo  rets 0
         *   if >0 loop
         *       CB_GETITEMDATA to match
         * *** above 3 lines simulated by FindItem      x
         *   WM_NOTIFY to COMBOEX parent (rebar)        x
         *     (CBEN_ENDEDIT{A|W}                       x
         *        fChanged = TRUE (-1)                  x
         *        iNewSelection = -1 or selected        x
         *        txt=                                  x
         *        iWhy = 2 (CBENF_RETURN)               x
         *   CB_GETCURSEL to Combo  rets -1             x
         *   if -1 send CB_SETCURSEL to Combo -1        x
         *   InvalidateRect(Combo, 0, 0)                x
         *   SetFocus(Edit)                             x
         *   CallWindowProc(406615a8, Edit, 0x100, 0xd, 0x1c0001)
         */

        TRACE("special code for VK_RETURN\n");

        GetWindowTextW (infoPtr->hwndEdit, edit_text, 260);

        infoPtr->flags &= ~(WCBE_ACTEDIT | WCBE_EDITCHG);
        selected = SendMessageW (infoPtr->hwndCombo,
                     CB_GETCURSEL, 0, 0);

        if (selected != -1) {
                    cmp_func_t cmptext = get_cmp_func(infoPtr);
            item = COMBOEX_FindItem (infoPtr, selected);
            TRACE("handling VK_RETURN, selected = %ld, selected_text=%s\n",
              selected, debugstr_txt(item->pszText));
            TRACE("handling VK_RETURN, edittext=%s\n",
              debugstr_w(edit_text));
            if (cmptext (COMBOEX_GetText(infoPtr, item), edit_text)) {
            /* strings not equal -- indicate edit has changed */
            selected = -1;
            }
        }

        cbeend.iNewSelection = selected;
        cbeend.fChanged = TRUE;
        cbeend.iWhy = CBENF_RETURN;
        if (COMBOEX_NotifyEndEdit (infoPtr, &cbeend, edit_text)) {
            /* abort the change, restore previous */
            TRACE("Notify requested abort of change\n");
            COMBOEX_SetEditText (infoPtr, infoPtr->edit);
            RedrawWindow (infoPtr->hwndCombo, 0, 0, RDW_ERASE |
                  RDW_INVALIDATE);
            return 0;
        }
        oldItem = SendMessageW (infoPtr->hwndCombo,CB_GETCURSEL, 0, 0);
        if (oldItem != -1) {
            /* if something is selected, then deselect it */
                    SendMessageW (infoPtr->hwndCombo, CB_SETCURSEL, -1, 0);
        }
        InvalidateRect (infoPtr->hwndCombo, 0, 0);
        SetFocus(infoPtr->hwndEdit);
        break;

        case VK_UP:
        case VK_DOWN:
        {
        INT step = wParam == VK_DOWN ? 1 : -1;

        oldItem = SendMessageW (infoPtr->hwndSelf, CB_GETCURSEL, 0, 0);
        if (oldItem >= 0 && oldItem + step >= 0)
            SendMessageW (infoPtr->hwndSelf, CB_SETCURSEL, oldItem + step, 0);
            return 0;
        }
        default:
        return DefSubclassProc(hwnd, uMsg, wParam, lParam);
        }
        return 0;
            }

    case WM_SETFOCUS:
        /* remember the focus to set state of icon */
        lret = DefSubclassProc(hwnd, uMsg, wParam, lParam);
        infoPtr->flags |= WCBE_EDITFOCUSED;
        return lret;

    case WM_KILLFOCUS:
        /*
         * do NOTIFY CBEN_ENDEDIT with CBENF_KILLFOCUS
         */
        infoPtr->flags &= ~WCBE_EDITFOCUSED;
        if (infoPtr->flags & WCBE_ACTEDIT) {
        infoPtr->flags &= ~(WCBE_ACTEDIT | WCBE_EDITCHG);

        GetWindowTextW (infoPtr->hwndEdit, edit_text, 260);
        cbeend.fChanged = FALSE;
        cbeend.iNewSelection = SendMessageW (infoPtr->hwndCombo,
                             CB_GETCURSEL, 0, 0);
        cbeend.iWhy = CBENF_KILLFOCUS;

        COMBOEX_NotifyEndEdit (infoPtr, &cbeend, edit_text);
        }
        /* fall through */

    default:
        return DefSubclassProc(hwnd, uMsg, wParam, lParam);
    }
}


static LRESULT CALLBACK
COMBOEX_ComboWndProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam,
                      UINT_PTR uId, DWORD_PTR ref_data)
{
    COMBOEX_INFO *infoPtr = COMBOEX_GetInfoPtr ((HWND)ref_data);
    NMCBEENDEDITW cbeend;
    NMMOUSE nmmse;
    COLORREF obkc;
    HDC hDC;
    HWND focusedhwnd;
    RECT rect;
    POINT pt;
    WCHAR edit_text[260];

    TRACE("hwnd=%p msg=%x wparam=%lx lParam=%lx, info_ptr=%p\n",
      hwnd, uMsg, wParam, lParam, infoPtr);

    if (!infoPtr) return 0;

    switch (uMsg)
    {

    case WM_DRAWITEM:
        /*
         * The only way this message should come is from the
         * child Listbox issuing the message. Flag this so
         * that ComboEx knows this is listbox.
         */
        ((DRAWITEMSTRUCT *)lParam)->itemState |= ODS_COMBOEXLBOX;
        return DefSubclassProc(hwnd, uMsg, wParam, lParam);

    case WM_ERASEBKGND:
        /*
         * The following was determined by traces of the native
         */
            hDC = (HDC) wParam;
        obkc = SetBkColor (hDC, comctl32_color.clrWindow);
            GetClientRect (hwnd, &rect);
            TRACE("erasing (%s)\n", wine_dbgstr_rect(&rect));
        ExtTextOutW (hDC, 0, 0, ETO_OPAQUE, &rect, 0, 0, 0);
            SetBkColor (hDC, obkc);
        return DefSubclassProc(hwnd, uMsg, wParam, lParam);

    case WM_SETCURSOR:
        /*
         *  WM_NOTIFY to comboex parent (rebar)
         *   with NM_SETCURSOR with extra words of 0,0,0,0,0x02010001
         *  CallWindowProc (previous)
         */
        nmmse.dwItemSpec = 0;
        nmmse.dwItemData = 0;
        nmmse.pt.x = 0;
        nmmse.pt.y = 0;
        nmmse.dwHitInfo = lParam;
        COMBOEX_Notify (infoPtr, NM_SETCURSOR, (NMHDR *)&nmmse);
        return DefSubclassProc(hwnd, uMsg, wParam, lParam);

    case WM_LBUTTONDOWN:
        GetClientRect (hwnd, &rect);
        rect.bottom = rect.top + SendMessageW(infoPtr->hwndSelf,
                                      CB_GETITEMHEIGHT, -1, 0);
        rect.left = rect.right - GetSystemMetrics(SM_CXVSCROLL);
        pt.x = (short)LOWORD(lParam);
        pt.y = (short)HIWORD(lParam);
        if (PtInRect(&rect, pt))
        return DefSubclassProc(hwnd, uMsg, wParam, lParam);

        infoPtr->flags |= WCBE_MOUSECAPTURED;
        SetCapture(hwnd);
        break;

    case WM_LBUTTONUP:
        if (!(infoPtr->flags & WCBE_MOUSECAPTURED))
        return DefSubclassProc(hwnd, uMsg, wParam, lParam);

        ReleaseCapture();
        infoPtr->flags &= ~WCBE_MOUSECAPTURED;
        if (infoPtr->flags & WCBE_MOUSEDRAGGED) {
        infoPtr->flags &= ~WCBE_MOUSEDRAGGED;
        } else {
        SendMessageW(hwnd, CB_SHOWDROPDOWN, TRUE, 0);
        }
        break;

    case WM_MOUSEMOVE:
        if ( (infoPtr->flags & WCBE_MOUSECAPTURED) &&
        !(infoPtr->flags & WCBE_MOUSEDRAGGED)) {
        GetWindowTextW (infoPtr->hwndEdit, edit_text, 260);
        COMBOEX_NotifyDragBegin(infoPtr, edit_text);
        infoPtr->flags |= WCBE_MOUSEDRAGGED;
        }
        return DefSubclassProc(hwnd, uMsg, wParam, lParam);

    case WM_COMMAND:
        switch (HIWORD(wParam)) {

        case EN_UPDATE:
        /* traces show that COMBOEX does not issue CBN_EDITUPDATE
         * on the EN_UPDATE
         */
        return 0;

        case EN_KILLFOCUS:
        /*
         * Native does:
         *
         *  GetFocus() retns AA
         *  GetWindowTextW(Edit)
         *  CB_GETCURSEL(Combo) (got -1)
         *  WM_NOTIFY(CBEN_ENDEDITA) with CBENF_KILLFOCUS
         *  CB_GETCURSEL(Combo) (got -1)
         *  InvalidateRect(Combo, 0, 0)
         *  WM_KILLFOCUS(Combo, AA)
         *  return 0;
         */
        focusedhwnd = GetFocus();
        if (infoPtr->flags & WCBE_ACTEDIT) {
            GetWindowTextW (infoPtr->hwndEdit, edit_text, 260);
            cbeend.fChanged = (infoPtr->flags & WCBE_EDITCHG);
            cbeend.iNewSelection = SendMessageW (infoPtr->hwndCombo,
                             CB_GETCURSEL, 0, 0);
            cbeend.iWhy = CBENF_KILLFOCUS;

            infoPtr->flags &= ~(WCBE_ACTEDIT | WCBE_EDITCHG);
            if (COMBOEX_NotifyEndEdit (infoPtr, &cbeend, edit_text)) return 0;
        }
        /* possible CB_GETCURSEL */
        InvalidateRect (infoPtr->hwndCombo, 0, 0);
        if (focusedhwnd)
            SendMessageW (infoPtr->hwndCombo, WM_KILLFOCUS,
                  (WPARAM)focusedhwnd, 0);
        return 0;

        case EN_SETFOCUS: {
        /*
         * For EN_SETFOCUS this issues the same calls and messages
         *  as the native seems to do.
         *
         * for some cases however native does the following:
         *   (noticed after SetFocus during LBUTTONDOWN on
         *    on dropdown arrow)
         *  WM_GETTEXTLENGTH (Edit);
         *  WM_GETTEXT (Edit, len+1, str);
         *  EM_SETSEL (Edit, 0, 0);
         *  WM_GETTEXTLENGTH (Edit);
         *  WM_GETTEXT (Edit, len+1, str);
         *  EM_SETSEL (Edit, 0, len);
         *  WM_NOTIFY (parent, CBEN_BEGINEDIT)
         */
        NMHDR hdr;

        SendMessageW (infoPtr->hwndEdit, EM_SETSEL, 0, 0);
        SendMessageW (infoPtr->hwndEdit, EM_SETSEL, 0, -1);
        COMBOEX_Notify (infoPtr, CBEN_BEGINEDIT, &hdr);
        infoPtr->flags |= WCBE_ACTEDIT;
        infoPtr->flags &= ~WCBE_EDITCHG; /* no change yet */
        return 0;
            }

        case EN_CHANGE: {
        /*
         * For EN_CHANGE this issues the same calls and messages
         *  as the native seems to do.
         */
        WCHAR edit_text[260];
        LPCWSTR lastwrk;
                cmp_func_t cmptext = get_cmp_func(infoPtr);

        INT_PTR selected = SendMessageW (infoPtr->hwndCombo,
                                                 CB_GETCURSEL, 0, 0);

        /* lstrlenW( lastworkingURL ) */

        GetWindowTextW (infoPtr->hwndEdit, edit_text, 260);
        if (selected == -1) {
            lastwrk = infoPtr->edit->pszText;
        }
        else {
            CBE_ITEMDATA *item = COMBOEX_FindItem (infoPtr, selected);
            lastwrk = COMBOEX_GetText(infoPtr, item);
        }

        TRACE("handling EN_CHANGE, selected = %ld, selected_text=%s\n",
              selected, debugstr_w(lastwrk));
        TRACE("handling EN_CHANGE, edittext=%s\n",
              debugstr_w(edit_text));

        /* cmptext is between lastworkingURL and GetWindowText */
        if (cmptext (lastwrk, edit_text)) {
            /* strings not equal -- indicate edit has changed */
            infoPtr->flags |= WCBE_EDITCHG;
        }
        SendMessageW ( infoPtr->hwndNotify, WM_COMMAND,
                   MAKEWPARAM(GetDlgCtrlID (infoPtr->hwndSelf),
                      CBN_EDITCHANGE),
                   (LPARAM)infoPtr->hwndSelf);
        return 0;
            }

        case LBN_SELCHANGE:
        /*
         * Therefore from traces there is no additional code here
         */

        /*
         * Using native COMCTL32 gets the following:
         *  1 == SHDOCVW.DLL  issues call/message
         *  2 == COMCTL32.DLL  issues call/message
         *  3 == WINE  issues call/message
         *
         *
         * for LBN_SELCHANGE:
         *    1  CB_GETCURSEL(ComboEx)
         *    1  CB_GETDROPPEDSTATE(ComboEx)
         *    1  CallWindowProc( *2* for WM_COMMAND(LBN_SELCHANGE)
         *    2  CallWindowProc( *3* for WM_COMMAND(LBN_SELCHANGE)
         **   call CBRollUp( xxx, TRUE for LBN_SELCHANGE, TRUE)
         *    3  WM_COMMAND(ComboEx, CBN_SELENDOK)
         *      WM_USER+49(ComboLB, 1,0)  <=============!!!!!!!!!!!
         *    3  ShowWindow(ComboLB, SW_HIDE)
         *    3  RedrawWindow(Combo,  RDW_UPDATENOW)
         *    3  WM_COMMAND(ComboEX, CBN_CLOSEUP)
         **   end of CBRollUp
         *    3  WM_COMMAND(ComboEx, CBN_SELCHANGE)  (echo to parent)
         *    ?  LB_GETCURSEL              <==|
         *    ?  LB_GETTEXTLEN                |
         *    ?  LB_GETTEXT                   | Needs to be added to
         *    ?  WM_CTLCOLOREDIT(ComboEx)     | Combo processing
         *    ?  LB_GETITEMDATA               |
         *    ?  WM_DRAWITEM(ComboEx)      <==|
         */
        default:
        break;
        }/* fall through */
    default:
        return DefSubclassProc(hwnd, uMsg, wParam, lParam);
    }
    return 0;
}


static LRESULT WINAPI
COMBOEX_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    COMBOEX_INFO *infoPtr = COMBOEX_GetInfoPtr (hwnd);

    TRACE("hwnd=%p msg=%x wparam=%lx lParam=%lx\n", hwnd, uMsg, wParam, lParam);

    if (!infoPtr) {
    if (uMsg == WM_CREATE)
        return COMBOEX_Create (hwnd, (LPCREATESTRUCTA)lParam);
    if (uMsg == WM_NCCREATE)
        COMBOEX_NCCreate (hwnd);
        return DefWindowProcW (hwnd, uMsg, wParam, lParam);
    }

    switch (uMsg)
    {
        case CBEM_DELETEITEM:
        return COMBOEX_DeleteItem (infoPtr, wParam);

    case CBEM_GETCOMBOCONTROL:
        return (LRESULT)infoPtr->hwndCombo;

    case CBEM_GETEDITCONTROL:
        return (LRESULT)infoPtr->hwndEdit;

    case CBEM_GETEXTENDEDSTYLE:
        return infoPtr->dwExtStyle;

    case CBEM_GETIMAGELIST:
        return (LRESULT)infoPtr->himl;

    case CBEM_GETITEMA:
        return (LRESULT)COMBOEX_GetItemA (infoPtr, (COMBOBOXEXITEMA *)lParam);

    case CBEM_GETITEMW:
        return (LRESULT)COMBOEX_GetItemW (infoPtr, (COMBOBOXEXITEMW *)lParam);

    case CBEM_GETUNICODEFORMAT:
        return infoPtr->unicode;

    case CBEM_HASEDITCHANGED:
        return COMBOEX_HasEditChanged (infoPtr);

    case CBEM_INSERTITEMA:
        return COMBOEX_InsertItemA (infoPtr, (COMBOBOXEXITEMA *)lParam);

    case CBEM_INSERTITEMW:
        return COMBOEX_InsertItemW (infoPtr, (COMBOBOXEXITEMW *)lParam);

    case CBEM_SETEXSTYLE:
    case CBEM_SETEXTENDEDSTYLE:
        return COMBOEX_SetExtendedStyle (infoPtr, (DWORD)wParam, (DWORD)lParam);

    case CBEM_SETIMAGELIST:
        return (LRESULT)COMBOEX_SetImageList (infoPtr, (HIMAGELIST)lParam);

    case CBEM_SETITEMA:
        return COMBOEX_SetItemA (infoPtr, (COMBOBOXEXITEMA *)lParam);

    case CBEM_SETITEMW:
        return COMBOEX_SetItemW (infoPtr, (COMBOBOXEXITEMW *)lParam);

    case CBEM_SETUNICODEFORMAT:
        return COMBOEX_SetUnicodeFormat (infoPtr, wParam);

    /*case CBEM_SETWINDOWTHEME:
        FIXME("CBEM_SETWINDOWTHEME: stub\n");*/

    case WM_SETTEXT:
    case WM_GETTEXT:
    case WM_GETTEXTLENGTH:
            return SendMessageW(infoPtr->hwndEdit, uMsg, wParam, lParam);

    case CB_GETLBTEXT:
            return COMBOEX_GetListboxText(infoPtr, wParam, (LPWSTR)lParam);

    case CB_GETLBTEXTLEN:
            return COMBOEX_GetListboxText(infoPtr, wParam, NULL);

    case CB_RESETCONTENT:
            COMBOEX_ResetContent(infoPtr);
            /* fall through */

/*   Combo messages we are not sure if we need to process or just forward */
    case CB_GETDROPPEDCONTROLRECT:
    case CB_GETITEMHEIGHT:
    case CB_GETEXTENDEDUI:
    case CB_LIMITTEXT:
    case CB_SELECTSTRING:

/*   Combo messages OK to just forward to the regular COMBO */
    case CB_GETCOUNT:
    case CB_GETCURSEL:
    case CB_GETDROPPEDSTATE:
        case CB_SETDROPPEDWIDTH:
        case CB_SETEXTENDEDUI:
        case CB_SHOWDROPDOWN:
        return SendMessageW (infoPtr->hwndCombo, uMsg, wParam, lParam);

/*   Combo messages we need to process specially */
        case CB_FINDSTRINGEXACT:
        return COMBOEX_FindStringExact (infoPtr, (INT)wParam, (LPCWSTR)lParam);

    case CB_GETITEMDATA:
        return COMBOEX_GetItemData (infoPtr, (INT)wParam);

    case CB_SETCURSEL:
        return COMBOEX_SetCursel (infoPtr, (INT)wParam);

    case CB_SETITEMDATA:
        return COMBOEX_SetItemData (infoPtr, (INT)wParam, (DWORD_PTR)lParam);

    case CB_SETITEMHEIGHT:
        return COMBOEX_SetItemHeight (infoPtr, (INT)wParam, (UINT)lParam);



/*   Window messages passed to parent */
    case WM_COMMAND:
        return COMBOEX_Command (infoPtr, wParam);

    case WM_NOTIFY:
        if (infoPtr->NtfUnicode)
        return SendMessageW (infoPtr->hwndNotify, uMsg, wParam, lParam);
        else
        return SendMessageA (infoPtr->hwndNotify, uMsg, wParam, lParam);


/*   Window messages we need to process */
        case WM_DELETEITEM:
        return COMBOEX_WM_DeleteItem (infoPtr, (DELETEITEMSTRUCT *)lParam);

        case WM_DRAWITEM:
            return COMBOEX_DrawItem (infoPtr, (DRAWITEMSTRUCT *)lParam);

    case WM_DESTROY:
        return COMBOEX_Destroy (infoPtr);

    case WM_ENABLE:
        return COMBOEX_Enable (infoPtr, (BOOL)wParam);

        case WM_MEASUREITEM:
            return COMBOEX_MeasureItem (infoPtr, (MEASUREITEMSTRUCT *)lParam);

        case WM_NOTIFYFORMAT:
        return COMBOEX_NotifyFormat (infoPtr, lParam);

    case WM_SIZE:
        return COMBOEX_Size (infoPtr, LOWORD(lParam), HIWORD(lParam));

        case WM_SETREDRAW:
            return COMBOEX_SetRedraw(infoPtr, wParam, lParam);

        case WM_WINDOWPOSCHANGING:
        return COMBOEX_WindowPosChanging (infoPtr, (WINDOWPOS *)lParam);

        case WM_SETFOCUS:
            SetFocus(infoPtr->hwndCombo);
            return 0;

        case WM_SYSCOLORCHANGE:
            COMCTL32_RefreshSysColors();
            return 0;

    default:
        if ((uMsg >= WM_USER) && (uMsg < WM_APP) && !COMCTL32_IsReflectedMessage(uMsg))
        ERR("unknown msg %04x wp=%08lx lp=%08lx\n",uMsg,wParam,lParam);
        return DefWindowProcW (hwnd, uMsg, wParam, lParam);
    }
}


void COMBOEX_Register (void)
{
    WNDCLASSW wndClass;

    ZeroMemory (&wndClass, sizeof(WNDCLASSW));
    wndClass.style         = CS_GLOBALCLASS;
    wndClass.lpfnWndProc   = COMBOEX_WindowProc;
    wndClass.cbClsExtra    = 0;
    wndClass.cbWndExtra    = sizeof(COMBOEX_INFO *);
    wndClass.hCursor       = LoadCursorW (0, (LPWSTR)IDC_ARROW);
    wndClass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
    wndClass.lpszClassName = WC_COMBOBOXEXW;

    RegisterClassW (&wndClass);
}


void COMBOEX_Unregister (void)
{
    UnregisterClassW (WC_COMBOBOXEXW, NULL);
}