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ReactOS Development > Doxygen

preview.c
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00001 /*
00002  * PROJECT:     ReactOS Desktop Control Panel
00003  * LICENSE:     GPL - See COPYING in the top level directory
00004  * FILE:        dll/cpl/desk/preview.c
00005  * PURPOSE:     Draws the preview control
00006  * COPYRIGHT:   Copyright 2006, 2007 Eric Kohl
00007  */
00008 
00009 #include "desk.h"
00010 
00011 static const TCHAR szPreviewWndClass[] = TEXT("PreviewWndClass");
00012 
00013 typedef struct _PREVIEW_DATA
00014 {
00015     HWND hwndParent;
00016 
00017     COLOR_SCHEME Scheme;
00018 
00019     HBRUSH hbrScrollbar;
00020     HBRUSH hbrDesktop;
00021     HBRUSH hbrWindow;
00022 
00023     INT cxEdge;
00024     INT cyEdge;
00025 
00026     INT cySizeFrame;
00027 
00028     INT cyCaption;
00029     INT cyBorder;
00030     INT cyMenu;
00031     INT cxScrollbar;
00032 
00033     RECT rcDesktop;
00034     RECT rcInactiveFrame;
00035     RECT rcInactiveCaption;
00036     RECT rcInactiveCaptionButtons;
00037 
00038     RECT rcActiveFrame;
00039     RECT rcActiveCaption;
00040     RECT rcActiveCaptionButtons;
00041     RECT rcActiveMenuBar;
00042     RECT rcSelectedMenuItem;
00043     RECT rcActiveClient;
00044     RECT rcActiveScroll;
00045 
00046     RECT rcDialogFrame;
00047     RECT rcDialogCaption;
00048     RECT rcDialogCaptionButtons;
00049     RECT rcDialogClient;
00050 
00051     RECT rcDialogButton;
00052 
00053     LPTSTR lpInAct;
00054     LPTSTR lpAct;
00055     LPTSTR lpWinTxt;
00056     LPTSTR lpMessBox;
00057     LPTSTR lpMessText;
00058     LPTSTR lpButText;
00059 
00060     HFONT hCaptionFont;
00061     HFONT hMenuFont;
00062     HFONT hMessageFont;
00063     HFONT hClientFont;
00064 
00065     HMENU hMenu;
00066 
00067 } PREVIEW_DATA, *PPREVIEW_DATA;
00068 
00069 
00070 static VOID UpdatePreviewTheme(HWND hwnd, PPREVIEW_DATA pPreviewData, COLOR_SCHEME *scheme)
00071 {
00072     if (pPreviewData->hbrScrollbar != NULL)
00073         DeleteObject(pPreviewData->hbrScrollbar);
00074     pPreviewData->hbrScrollbar = CreateSolidBrush(scheme->crColor[COLOR_SCROLLBAR]);
00075     if (pPreviewData->hbrDesktop != NULL)
00076         DeleteObject(pPreviewData->hbrDesktop);
00077 
00078     pPreviewData->hbrDesktop = CreateSolidBrush(scheme->crColor[COLOR_DESKTOP]);
00079     if (pPreviewData->hbrWindow != NULL)
00080         DeleteObject(pPreviewData->hbrWindow);
00081     pPreviewData->hbrWindow = CreateSolidBrush(scheme->crColor[COLOR_WINDOW]);
00082 
00083     pPreviewData->cxEdge = scheme->Size[SIZE_EDGE_X] - 2;        /* SM_CXEDGE */
00084     pPreviewData->cyEdge = scheme->Size[SIZE_EDGE_Y] - 2;        /* SM_CYEDGE */
00085 
00086     pPreviewData->cySizeFrame = scheme->Size[SIZE_FRAME_Y] - 1;  /* SM_CYSIZEFRAME */
00087 
00088     pPreviewData->cyCaption = scheme->Size[SIZE_CAPTION_Y];      /* SM_CYCAPTION */
00089     pPreviewData->cyMenu = scheme->Size[SIZE_MENU_Y];            /* SM_CYMENU */
00090     pPreviewData->cxScrollbar = scheme->Size[SIZE_SCROLL_X];     /* SM_CXVSCROLL */
00091     pPreviewData->cyBorder = scheme->Size[SIZE_BORDER_Y];        /* SM_CYBORDER */
00092 
00093     if (pPreviewData->hCaptionFont != NULL)
00094         DeleteObject(pPreviewData->hCaptionFont);
00095     pPreviewData->hCaptionFont = CreateFontIndirect(&scheme->lfFont[FONT_CAPTION]);
00096 
00097     if (pPreviewData->hMenuFont != NULL)
00098         DeleteObject(pPreviewData->hMenuFont);
00099     pPreviewData->hMenuFont = CreateFontIndirect(&scheme->lfFont[FONT_MENU]);
00100 
00101     if (pPreviewData->hMessageFont != NULL)
00102         DeleteObject(pPreviewData->hMessageFont);
00103     pPreviewData->hMessageFont = CreateFontIndirect(&scheme->lfFont[FONT_DIALOG]);
00104 
00105     pPreviewData->Scheme = *scheme;
00106     InvalidateRect(hwnd, NULL, FALSE);
00107 }
00108 
00109 static VOID
00110 OnCreate(HWND hwnd, PPREVIEW_DATA pPreviewData)
00111 {
00112     COLOR_SCHEME *scheme;
00113 
00114     pPreviewData->hClientFont = (HFONT)GetStockObject(DEFAULT_GUI_FONT);
00115 
00116     /* Load and modify the menu */
00117     pPreviewData->hMenu = LoadMenu(hApplet, MAKEINTRESOURCE(IDR_PREVIEW_MENU));
00118     EnableMenuItem(pPreviewData->hMenu,
00119                    1, MF_BYPOSITION | MF_GRAYED);
00120     HiliteMenuItem(hwnd, pPreviewData->hMenu,
00121                    2, MF_BYPOSITION | MF_HILITE);
00122 
00123 //    GetMenuItemRect(hwnd, pPreviewData->hMenu,
00124 //                    2, &pPreviewData->rcSelectedMenuItem);
00125 
00126     AllocAndLoadString(&pPreviewData->lpInAct, hApplet, IDS_INACTWIN);
00127     AllocAndLoadString(&pPreviewData->lpAct, hApplet, IDS_ACTWIN);
00128     AllocAndLoadString(&pPreviewData->lpWinTxt, hApplet, IDS_WINTEXT);
00129     AllocAndLoadString(&pPreviewData->lpMessBox, hApplet, IDS_MESSBOX);
00130     AllocAndLoadString(&pPreviewData->lpMessText, hApplet, IDS_MESSTEXT);
00131     AllocAndLoadString(&pPreviewData->lpButText, hApplet, IDS_BUTTEXT);
00132 
00133     scheme = &pPreviewData->Scheme;
00134     LoadCurrentScheme(scheme);
00135 
00136     UpdatePreviewTheme(hwnd, pPreviewData, scheme);
00137 }
00138 
00139 
00140 static VOID
00141 CalculateItemSize(PPREVIEW_DATA pPreviewData)
00142 {
00143     int width, height;
00144 
00145     /* Calculate the inactive window rectangle */
00146     pPreviewData->rcInactiveFrame.left = pPreviewData->rcDesktop.left + 8;
00147     pPreviewData->rcInactiveFrame.top = pPreviewData->rcDesktop.top + 8;
00148     pPreviewData->rcInactiveFrame.right = pPreviewData->rcDesktop.right - 25;
00149     pPreviewData->rcInactiveFrame.bottom = pPreviewData->rcDesktop.bottom - 30;
00150 
00151     /* Calculate the inactive caption rectangle */
00152     pPreviewData->rcInactiveCaption.left = pPreviewData->rcInactiveFrame.left + pPreviewData->cxEdge + pPreviewData->cySizeFrame + 1;
00153     pPreviewData->rcInactiveCaption.top = pPreviewData->rcInactiveFrame.top + pPreviewData->cyEdge + pPreviewData->cySizeFrame + 1;
00154     pPreviewData->rcInactiveCaption.right = pPreviewData->rcInactiveFrame.right - pPreviewData->cxEdge - pPreviewData->cySizeFrame - 1;
00155     pPreviewData->rcInactiveCaption.bottom = pPreviewData->rcInactiveCaption.top + pPreviewData->cyCaption - pPreviewData->cyBorder;
00156 
00157     /* Calculate the inactive caption buttons rectangle */
00158     pPreviewData->rcInactiveCaptionButtons.left = pPreviewData->rcInactiveCaption.right - 2 - 2 - 3 * 16;
00159     pPreviewData->rcInactiveCaptionButtons.top = pPreviewData->rcInactiveCaption.top + 2;
00160     pPreviewData->rcInactiveCaptionButtons.right = pPreviewData->rcInactiveCaption.right - 2;
00161     pPreviewData->rcInactiveCaptionButtons.bottom = pPreviewData->rcInactiveCaption.bottom - 2;
00162 
00163     /* Calculate the active window rectangle */
00164     pPreviewData->rcActiveFrame.left = pPreviewData->rcInactiveFrame.left + 3 + pPreviewData->cySizeFrame;
00165     pPreviewData->rcActiveFrame.top = pPreviewData->rcInactiveCaption.bottom + 1;
00166     pPreviewData->rcActiveFrame.right = pPreviewData->rcDesktop.right - 10;
00167     pPreviewData->rcActiveFrame.bottom = pPreviewData->rcDesktop.bottom - 25;
00168 
00169     /* Calculate the active caption rectangle */
00170     pPreviewData->rcActiveCaption.left = pPreviewData->rcActiveFrame.left + pPreviewData->cxEdge + pPreviewData->cySizeFrame + 1;
00171     pPreviewData->rcActiveCaption.top = pPreviewData->rcActiveFrame.top + pPreviewData->cxEdge + pPreviewData->cySizeFrame + 1;
00172     pPreviewData->rcActiveCaption.right = pPreviewData->rcActiveFrame.right - pPreviewData->cxEdge - pPreviewData->cySizeFrame - 1;
00173     pPreviewData->rcActiveCaption.bottom = pPreviewData->rcActiveCaption.top + pPreviewData->cyCaption - pPreviewData->cyBorder;
00174 
00175     /* Calculate the active caption buttons rectangle */
00176     pPreviewData->rcActiveCaptionButtons.left = pPreviewData->rcActiveCaption.right - 2 - 2 - 3 * 16;
00177     pPreviewData->rcActiveCaptionButtons.top = pPreviewData->rcActiveCaption.top + 2;
00178     pPreviewData->rcActiveCaptionButtons.right = pPreviewData->rcActiveCaption.right - 2;
00179     pPreviewData->rcActiveCaptionButtons.bottom = pPreviewData->rcActiveCaption.bottom - 2;
00180 
00181     /* Calculate the active menu bar rectangle */
00182     pPreviewData->rcActiveMenuBar.left = pPreviewData->rcActiveFrame.left + pPreviewData->cxEdge + pPreviewData->cySizeFrame + 1;
00183     pPreviewData->rcActiveMenuBar.top = pPreviewData->rcActiveCaption.bottom + 1;
00184     pPreviewData->rcActiveMenuBar.right = pPreviewData->rcActiveFrame.right - pPreviewData->cxEdge - pPreviewData->cySizeFrame - 1;
00185     pPreviewData->rcActiveMenuBar.bottom = pPreviewData->rcActiveMenuBar.top + pPreviewData->cyMenu + 1;
00186 
00187     /* Calculate the active client rectangle */
00188     pPreviewData->rcActiveClient.left = pPreviewData->rcActiveFrame.left + pPreviewData->cxEdge + pPreviewData->cySizeFrame + 1;
00189     pPreviewData->rcActiveClient.top = pPreviewData->rcActiveMenuBar.bottom;
00190     pPreviewData->rcActiveClient.right = pPreviewData->rcActiveFrame.right - pPreviewData->cxEdge - pPreviewData->cySizeFrame - 1;
00191     pPreviewData->rcActiveClient.bottom = pPreviewData->rcActiveFrame.bottom - pPreviewData->cyEdge - pPreviewData->cySizeFrame - 1;
00192 
00193     /* Calculate the active scroll rectangle */
00194     pPreviewData->rcActiveScroll.left = pPreviewData->rcActiveClient.right - 2 - pPreviewData->cxScrollbar;
00195     pPreviewData->rcActiveScroll.top = pPreviewData->rcActiveClient.top + 2;
00196     pPreviewData->rcActiveScroll.right = pPreviewData->rcActiveClient.right - 2;
00197     pPreviewData->rcActiveScroll.bottom = pPreviewData->rcActiveClient.bottom - 2;
00198 
00199 
00200     /* Dialog window */
00201     pPreviewData->rcDialogFrame.left = pPreviewData->rcActiveClient.left + 4;
00202     pPreviewData->rcDialogFrame.top = (pPreviewData->rcDesktop.bottom * 60) / 100;
00203     pPreviewData->rcDialogFrame.right = (pPreviewData->rcDesktop.right * 65) / 100;
00204     pPreviewData->rcDialogFrame.bottom = pPreviewData->rcDesktop.bottom - 5;
00205 
00206     /* Calculate the dialog caption rectangle */
00207     pPreviewData->rcDialogCaption.left = pPreviewData->rcDialogFrame.left + 3;
00208     pPreviewData->rcDialogCaption.top = pPreviewData->rcDialogFrame.top + 3;
00209     pPreviewData->rcDialogCaption.right = pPreviewData->rcDialogFrame.right - 3;
00210     pPreviewData->rcDialogCaption.bottom = pPreviewData->rcDialogFrame.top + pPreviewData->cyCaption + 1 + 1;
00211 
00212     /* Calculate the inactive caption buttons rectangle */
00213     pPreviewData->rcDialogCaptionButtons.left = pPreviewData->rcDialogCaption.right - 2 - 16;
00214     pPreviewData->rcDialogCaptionButtons.top = pPreviewData->rcDialogCaption.top + 2;
00215     pPreviewData->rcDialogCaptionButtons.right = pPreviewData->rcDialogCaption.right - 2;
00216     pPreviewData->rcDialogCaptionButtons.bottom = pPreviewData->rcDialogCaption.bottom - 2;
00217 
00218     /* Calculate the dialog client rectangle */
00219     pPreviewData->rcDialogClient.left = pPreviewData->rcDialogFrame.left + 3;
00220     pPreviewData->rcDialogClient.top = pPreviewData->rcDialogCaption.bottom + 1;
00221     pPreviewData->rcDialogClient.right = pPreviewData->rcDialogFrame.right - 3;
00222     pPreviewData->rcDialogClient.bottom = pPreviewData->rcDialogFrame.bottom - 3;
00223 
00224     /* Calculate the dialog button rectangle */
00225     width = 80;
00226     height = 28;
00227 
00228     pPreviewData->rcDialogButton.left =
00229         (pPreviewData->rcDialogClient.right + pPreviewData->rcDialogClient.left - width) / 2;
00230     pPreviewData->rcDialogButton.right = pPreviewData->rcDialogButton.left + width;
00231     pPreviewData->rcDialogButton.bottom = pPreviewData->rcDialogClient.bottom - 2;
00232     pPreviewData->rcDialogButton.top = pPreviewData->rcDialogButton.bottom - height;
00233 }
00234 
00235 
00236 static VOID
00237 OnSize(INT cx, INT cy, PPREVIEW_DATA pPreviewData)
00238 {
00239     /* Get Desktop rectangle */
00240     pPreviewData->rcDesktop.left = 0;
00241     pPreviewData->rcDesktop.top = 0;
00242     pPreviewData->rcDesktop.right = cx;
00243     pPreviewData->rcDesktop.bottom = cy;
00244 
00245     CalculateItemSize(pPreviewData);
00246 }
00247 
00248 static VOID
00249 OnPaint(HWND hwnd, PPREVIEW_DATA pPreviewData)
00250 {
00251     PAINTSTRUCT ps;
00252     HFONT hOldFont;
00253     HDC hdc;
00254     RECT rc;
00255     COLOR_SCHEME *scheme;
00256 
00257     scheme = &pPreviewData->Scheme;
00258 
00259     hdc = BeginPaint(hwnd, &ps);
00260 
00261     /* Desktop */
00262     FillRect(hdc, &pPreviewData->rcDesktop, pPreviewData->hbrDesktop);
00263 
00264     /* Inactive Window */
00265     MyDrawEdge(hdc, &pPreviewData->rcInactiveFrame, EDGE_RAISED, BF_RECT | BF_MIDDLE, scheme);
00266     SetTextColor(hdc, scheme->crColor[COLOR_INACTIVECAPTIONTEXT]);
00267     MyDrawCaptionTemp(NULL, hdc, &pPreviewData->rcInactiveCaption,  pPreviewData->hCaptionFont,
00268                       NULL, pPreviewData->lpInAct, DC_GRADIENT | DC_ICON | DC_TEXT, scheme);
00269     MyDrawCaptionButtons(hdc, &pPreviewData->rcInactiveCaption, TRUE, pPreviewData->cyCaption - 2, scheme);
00270 
00271     /* Active Window */
00272     MyDrawEdge(hdc, &pPreviewData->rcActiveFrame, EDGE_RAISED, BF_RECT | BF_MIDDLE, scheme);
00273     SetTextColor(hdc, scheme->crColor[COLOR_CAPTIONTEXT]);
00274     MyDrawCaptionTemp(NULL, hdc, &pPreviewData->rcActiveCaption, pPreviewData->hCaptionFont,
00275                       NULL, pPreviewData->lpAct, DC_ACTIVE | DC_GRADIENT | DC_ICON | DC_TEXT, scheme);
00276     MyDrawCaptionButtons(hdc, &pPreviewData->rcActiveCaption, TRUE, pPreviewData->cyCaption - 2, scheme);
00277 
00278     /* Draw the menu bar */
00279     MyDrawMenuBarTemp(hwnd, hdc, &pPreviewData->rcActiveMenuBar,
00280                       pPreviewData->hMenu,
00281                       pPreviewData->hMenuFont, scheme);
00282 
00283     /* Draw the client area */
00284     CopyRect(&rc, &pPreviewData->rcActiveClient);
00285     MyDrawEdge(hdc, &rc, EDGE_SUNKEN, BF_RECT | BF_ADJUST, scheme);
00286     FillRect(hdc, &rc, pPreviewData->hbrWindow);
00287 
00288     /* Draw the client text */
00289     CopyRect(&rc, &pPreviewData->rcActiveClient);
00290     rc.left += 4;
00291     rc.top += 2;
00292     SetTextColor(hdc, scheme->crColor[COLOR_WINDOWTEXT]);
00293     hOldFont = SelectObject(hdc, pPreviewData->hClientFont);
00294     DrawText(hdc, pPreviewData->lpWinTxt, -1, &rc, DT_LEFT);
00295     SelectObject(hdc, hOldFont);
00296 
00297     /* Draw the scroll bar */
00298     MyDrawScrollbar(hdc, &pPreviewData->rcActiveScroll, pPreviewData->hbrScrollbar, scheme);
00299 
00300     /* Dialog Window */
00301     MyDrawEdge(hdc, &pPreviewData->rcDialogFrame, EDGE_RAISED, BF_RECT | BF_MIDDLE, scheme);
00302     SetTextColor(hdc, scheme->crColor[COLOR_WINDOW]);
00303     MyDrawCaptionTemp(NULL, hdc, &pPreviewData->rcDialogCaption, pPreviewData->hCaptionFont,
00304                       NULL, pPreviewData->lpMessBox, DC_ACTIVE | DC_GRADIENT | DC_ICON | DC_TEXT, scheme);
00305     MyDrawCaptionButtons(hdc, &pPreviewData->rcDialogCaption, FALSE, pPreviewData->cyCaption - 2, scheme);
00306 
00307     /* Draw the dialog text */
00308     CopyRect(&rc, &pPreviewData->rcDialogClient);
00309     rc.left += 4;
00310     rc.top += 2;
00311     SetTextColor(hdc, scheme->crColor[COLOR_BTNTEXT]);
00312     hOldFont = SelectObject(hdc, pPreviewData->hMessageFont);
00313     DrawText(hdc, pPreviewData->lpMessText, -1, &rc, DT_LEFT);
00314     SelectObject(hdc, hOldFont);
00315 
00316     /* Draw Button */
00317     MyDrawFrameControl(hdc, &pPreviewData->rcDialogButton, DFC_BUTTON, DFCS_BUTTONPUSH, scheme);
00318     CopyRect(&rc, &pPreviewData->rcDialogButton);
00319     SetTextColor(hdc, scheme->crColor[COLOR_BTNTEXT]);
00320     hOldFont = SelectObject(hdc, pPreviewData->hMessageFont);
00321     DrawText(hdc, pPreviewData->lpButText, -1, &rc, DT_VCENTER | DT_CENTER | DT_SINGLELINE);
00322     SelectObject(hdc, hOldFont);
00323 
00324     EndPaint(hwnd, &ps);
00325 }
00326 
00327 
00328 static VOID
00329 OnLButtonDown(HWND hwnd, int xPos, int yPos, PPREVIEW_DATA pPreviewData)
00330 {
00331     UINT type = IDX_DESKTOP;
00332     POINT pt;
00333 
00334     pt.x = xPos;
00335     pt.y = yPos;
00336 
00337     if (PtInRect(&pPreviewData->rcInactiveFrame, pt))
00338         type = IDX_INACTIVE_BORDER;
00339 
00340     if (PtInRect(&pPreviewData->rcInactiveCaption, pt))
00341         type = IDX_INACTIVE_CAPTION;
00342 
00343     if (PtInRect(&pPreviewData->rcInactiveCaptionButtons, pt))
00344         type = IDX_CAPTION_BUTTON;
00345 
00346     if (PtInRect(&pPreviewData->rcActiveFrame, pt))
00347         type = IDX_ACTIVE_BORDER;
00348 
00349     if (PtInRect(&pPreviewData->rcActiveCaption, pt))
00350         type = IDX_ACTIVE_CAPTION;
00351 
00352     if (PtInRect(&pPreviewData->rcActiveCaptionButtons, pt))
00353         type = IDX_CAPTION_BUTTON;
00354 
00355 //    if (PtInRect(&pPreviewData->rcSelectedMenuItem, pt))
00356 //        type = IDX_SELECTION;
00357 
00358     if (PtInRect(&pPreviewData->rcActiveMenuBar, pt))
00359         type = IDX_MENU;
00360 
00361     if (PtInRect(&pPreviewData->rcActiveClient, pt))
00362         type = IDX_WINDOW;
00363 
00364     if (PtInRect(&pPreviewData->rcActiveScroll, pt))
00365         type = IDX_SCROLLBAR;
00366 
00367     if (PtInRect(&pPreviewData->rcDialogFrame, pt))
00368         type = IDX_DIALOG;
00369 
00370     if (PtInRect(&pPreviewData->rcDialogCaption, pt))
00371         type = IDX_ACTIVE_CAPTION;
00372 
00373     if (PtInRect(&pPreviewData->rcDialogCaptionButtons, pt))
00374         type = IDX_CAPTION_BUTTON;
00375 
00376     if (PtInRect(&pPreviewData->rcDialogButton, pt))
00377         type = IDX_3D_OBJECTS;
00378 
00379     SendMessage(GetParent(hwnd),
00380                 WM_COMMAND,
00381                 MAKEWPARAM(GetWindowLongPtrW(hwnd, GWLP_ID), 0),
00382                 (LPARAM)type);
00383 }
00384 
00385 
00386 static VOID
00387 OnDestroy(PPREVIEW_DATA pPreviewData)
00388 {
00389     DeleteObject(pPreviewData->hbrScrollbar);
00390     DeleteObject(pPreviewData->hbrDesktop);
00391     DeleteObject(pPreviewData->hbrWindow);
00392 
00393     DeleteObject(pPreviewData->hCaptionFont);
00394     DeleteObject(pPreviewData->hMenuFont);
00395     DeleteObject(pPreviewData->hMessageFont);
00396 
00397     DestroyMenu(pPreviewData->hMenu);
00398 
00399     LocalFree((HLOCAL)pPreviewData->lpInAct);
00400     LocalFree((HLOCAL)pPreviewData->lpAct);
00401     LocalFree((HLOCAL)pPreviewData->lpWinTxt);
00402     LocalFree((HLOCAL)pPreviewData->lpMessBox);
00403     LocalFree((HLOCAL)pPreviewData->lpMessText);
00404     LocalFree((HLOCAL)pPreviewData->lpButText);
00405 }
00406 
00407 
00408 static LRESULT CALLBACK
00409 PreviewWndProc(HWND hwnd,
00410                UINT uMsg,
00411                WPARAM wParam,
00412                LPARAM lParam)
00413 {
00414     PPREVIEW_DATA pPreviewData;
00415 
00416     pPreviewData = (PPREVIEW_DATA)GetWindowLongPtr(hwnd, GWLP_USERDATA);
00417 
00418     switch (uMsg)
00419     {
00420         case WM_CREATE:
00421             pPreviewData = (PPREVIEW_DATA)HeapAlloc(GetProcessHeap(),
00422                                                     HEAP_ZERO_MEMORY,
00423                                                     sizeof(PREVIEW_DATA));
00424             if (!pPreviewData)
00425                 return -1;
00426 
00427             SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)pPreviewData);
00428             OnCreate(hwnd, pPreviewData);
00429             break;
00430 
00431         case WM_SIZE:
00432             OnSize(LOWORD(lParam), HIWORD(lParam), pPreviewData);
00433             break;
00434 
00435         case WM_PAINT:
00436             OnPaint(hwnd, pPreviewData);
00437             break;
00438 
00439         case WM_LBUTTONDOWN:
00440             OnLButtonDown(hwnd, LOWORD(lParam), HIWORD(lParam), pPreviewData);
00441             break;
00442 
00443         case WM_DESTROY:
00444             OnDestroy(pPreviewData);
00445             HeapFree(GetProcessHeap(), 0, pPreviewData);
00446             break;
00447 
00448         case PVM_GETCYCAPTION:
00449             return pPreviewData->cyCaption;
00450 
00451         case PVM_SETCYCAPTION:
00452             if ((INT)lParam > 0)
00453             {
00454                 pPreviewData->cyCaption = (INT)lParam;
00455                 CalculateItemSize(pPreviewData);
00456                 InvalidateRect(hwnd, NULL, FALSE);
00457             }
00458             break;
00459 
00460         case PVM_GETCYMENU:
00461             return pPreviewData->cyMenu;
00462 
00463         case PVM_SETCYMENU:
00464             if ((INT)lParam > 0)
00465             {
00466                 pPreviewData->cyMenu = (INT)lParam;
00467                 CalculateItemSize(pPreviewData);
00468                 InvalidateRect(hwnd, NULL, FALSE);
00469             }
00470             break;
00471 
00472         case PVM_GETCXSCROLLBAR:
00473             return pPreviewData->cxScrollbar;
00474 
00475         case PVM_SETCXSCROLLBAR:
00476             if ((INT)lParam > 0)
00477             {
00478                 pPreviewData->cxScrollbar = (INT)lParam;
00479                 CalculateItemSize(pPreviewData);
00480                 InvalidateRect(hwnd, NULL, FALSE);
00481             }
00482             break;
00483 
00484         case PVM_GETCYSIZEFRAME:
00485             return pPreviewData->cySizeFrame;
00486 
00487         case PVM_SETCYSIZEFRAME:
00488             if ((INT)lParam > 0)
00489             {
00490                 pPreviewData->cySizeFrame = (INT)lParam;
00491                 CalculateItemSize(pPreviewData);
00492                 InvalidateRect(hwnd, NULL, FALSE);
00493             }
00494             break;
00495 
00496         case PVM_UPDATETHEME:
00497             UpdatePreviewTheme(hwnd, pPreviewData, (COLOR_SCHEME *)lParam);
00498             break;
00499 
00500         default:
00501             return DefWindowProc(hwnd, uMsg, wParam, lParam);
00502     }
00503     return FALSE;
00504 }
00505 
00506 
00507 BOOL
00508 RegisterPreviewControl(IN HINSTANCE hInstance)
00509 {
00510     WNDCLASSEX wc = {0};
00511 
00512     wc.cbSize = sizeof(WNDCLASSEX);
00513     wc.lpfnWndProc = PreviewWndProc;
00514     wc.hInstance = hInstance;
00515     wc.hCursor = LoadCursor(NULL, IDC_ARROW);
00516     wc.hbrBackground = (HBRUSH)NULL;
00517     wc.lpszClassName = szPreviewWndClass;
00518 
00519     return RegisterClassEx(&wc) != (ATOM)0;
00520 }
00521 
00522 
00523 VOID
00524 UnregisterPreviewControl(IN HINSTANCE hInstance)
00525 {
00526     UnregisterClass(szPreviewWndClass, hInstance);
00527 }
Generated on Sat May 26 2012 04:19:44 for ReactOS by doxygen 1.7.6.1
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