scrollbar.c File Reference

#include <win32k.h>

Include dependency graph for scrollbar.c:

Go to the source code of this file.

Macros
#define	SCROLL_NOWHERE   0x00 /* Outside the scroll bar */
#define	SCROLL_TOP_ARROW   0x01 /* Top or left arrow */
#define	SCROLL_TOP_RECT   0x02 /* Rectangle between the top arrow and the thumb */
#define	SCROLL_THUMB   0x03 /* Thumb rectangle */
#define	SCROLL_BOTTOM_RECT   0x04 /* Rectangle between the thumb and the bottom arrow */
#define	SCROLL_BOTTOM_ARROW   0x05 /* Bottom or right arrow */
#define	SCROLL_FIRST_DELAY
#define	SCROLL_REPEAT_DELAY   50 /* Delay (in ms) between scroll repetitions */
#define	SCROLL_TIMER   0 /* Scroll timer id */
#define	SCROLL_MIN_RECT   4
#define	SCROLL_MIN_THUMB   6
#define	SCROLL_ARROW_THUMB_OVERLAP   0
#define	MINTRACKTHUMB   8 /* Minimum size of the rectangle between the arrows */
#define	SA_SSI_HIDE   0x0001
#define	SA_SSI_SHOW   0x0002
#define	SA_SSI_REFRESH   0x0004
#define	SA_SSI_REPAINT_ARROWS   0x0008
#define	SBRG_SCROLLBAR   0 /* The scrollbar itself */
#define	SBRG_TOPRIGHTBTN   1 /* The top or right button */
#define	SBRG_PAGEUPRIGHT   2 /* The page up or page right region */
#define	SBRG_SCROLLBOX   3 /* The scroll box */
#define	SBRG_PAGEDOWNLEFT   4 /* The page down or page left region */
#define	SBRG_BOTTOMLEFTBTN   5 /* The bottom or left button */
#define	CHANGERGSTATE(item, status)

Functions
	DBG_DEFAULT_CHANNEL (UserScrollbar)
BOOL APIENTRY	IntEnableScrollBar (BOOL Horz, PSCROLLBARINFO Info, UINT wArrows)
static void	IntRefeshScrollInterior (PWND pWnd, INT nBar, PSCROLLBARINFO psbi)
static void	mirror_rect (const RECT *window_rect, RECT *rect)
PSBDATA FASTCALL	IntGetSBData (PWND pwnd, INT Bar)
BOOL FASTCALL	IntGetScrollBarRect (PWND Wnd, INT nBar, RECTL *lprect)
BOOL FASTCALL	IntCalculateThumb (PWND Wnd, LONG idObject, PSCROLLBARINFO psbi, PSBDATA pSBData)
static BOOL FASTCALL	co_IntGetScrollInfo (PWND Window, INT nBar, PSBDATA pSBData, LPSCROLLINFO lpsi)
BOOL FASTCALL	NEWco_IntGetScrollInfo (PWND pWnd, INT nBar, PSBDATA pSBData, LPSCROLLINFO lpsi)
static DWORD FASTCALL	co_IntSetScrollInfo (PWND Window, INT nBar, LPCSCROLLINFO lpsi, BOOL bRedraw)
BOOL FASTCALL	co_IntGetScrollBarInfo (PWND Window, LONG idObject, PSCROLLBARINFO psbi)
BOOL FASTCALL	co_IntSetScrollBarInfo (PWND Window, LONG idObject, PSETSCROLLBARINFO psbi)
BOOL FASTCALL	co_IntCreateScrollBars (PWND Window)
BOOL FASTCALL	IntDestroyScrollBars (PWND Window)
DWORD FASTCALL	co_UserShowScrollBar (PWND Wnd, int nBar, BOOL fShowH, BOOL fShowV)
static void	IntDrawScrollInterior (PWND pWnd, HDC hDC, INT nBar, BOOL Vertical, PSCROLLBARINFO ScrollBarInfo)
static VOID FASTCALL	IntDrawScrollArrows (HDC hDC, PSCROLLBARINFO ScrollBarInfo, BOOL Vertical)
static LONG FASTCALL	IntScrollGetObjectId (INT SBType)
void	IntDrawScrollBar (PWND Wnd, HDC DC, INT Bar)
LRESULT APIENTRY	ScrollBarWndProc (HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
BOOL APIENTRY	NtUserGetScrollBarInfo (HWND hWnd, LONG idObject, PSCROLLBARINFO psbi)
BOOL APIENTRY	NtUserSBGetParms (HWND hWnd, int fnBar, PSBDATA pSBData, LPSCROLLINFO lpsi)
BOOL APIENTRY	NtUserEnableScrollBar (HWND hWnd, UINT wSBflags, UINT wArrows)
DWORD APIENTRY	NtUserSetScrollInfo (HWND hWnd, int fnBar, LPCSCROLLINFO lpsi, BOOL bRedraw)
DWORD APIENTRY	NtUserShowScrollBar (HWND hWnd, int nBar, DWORD bShow)
BOOL APIENTRY	NtUserSetScrollBarInfo (HWND hWnd, LONG idObject, SETSCROLLBARINFO *info)

Macro Definition Documentation

CHANGERGSTATE

#define CHANGERGSTATE	(		item,
			status
	)

Value:

if(Info->rgstate[(item)] != (status)) \
    Chg = TRUE; \
  Info->rgstate[(item)] = (status);

Definition at line 54 of file scrollbar.c.

MINTRACKTHUMB

#define MINTRACKTHUMB   8 /* Minimum size of the rectangle between the arrows */

Definition at line 39 of file scrollbar.c.

SA_SSI_HIDE

#define SA_SSI_HIDE   0x0001

Definition at line 42 of file scrollbar.c.

SA_SSI_REFRESH

#define SA_SSI_REFRESH   0x0004

Definition at line 44 of file scrollbar.c.

SA_SSI_REPAINT_ARROWS

#define SA_SSI_REPAINT_ARROWS   0x0008

Definition at line 45 of file scrollbar.c.

SA_SSI_SHOW

#define SA_SSI_SHOW   0x0002

Definition at line 43 of file scrollbar.c.

SBRG_BOTTOMLEFTBTN

#define SBRG_BOTTOMLEFTBTN   5 /* The bottom or left button */

Definition at line 52 of file scrollbar.c.

SBRG_PAGEDOWNLEFT

#define SBRG_PAGEDOWNLEFT   4 /* The page down or page left region */

Definition at line 51 of file scrollbar.c.

SBRG_PAGEUPRIGHT

#define SBRG_PAGEUPRIGHT   2 /* The page up or page right region */

Definition at line 49 of file scrollbar.c.

SBRG_SCROLLBAR

#define SBRG_SCROLLBAR   0 /* The scrollbar itself */

Definition at line 47 of file scrollbar.c.

SBRG_SCROLLBOX

#define SBRG_SCROLLBOX   3 /* The scroll box */

Definition at line 50 of file scrollbar.c.

SBRG_TOPRIGHTBTN

#define SBRG_TOPRIGHTBTN   1 /* The top or right button */

Definition at line 48 of file scrollbar.c.

SCROLL_ARROW_THUMB_OVERLAP

#define SCROLL_ARROW_THUMB_OVERLAP   0

Definition at line 34 of file scrollbar.c.

SCROLL_BOTTOM_ARROW

#define SCROLL_BOTTOM_ARROW   0x05 /* Bottom or right arrow */

Definition at line 19 of file scrollbar.c.

SCROLL_BOTTOM_RECT

#define SCROLL_BOTTOM_RECT   0x04 /* Rectangle between the thumb and the bottom arrow */

Definition at line 18 of file scrollbar.c.

SCROLL_FIRST_DELAY

#define SCROLL_FIRST_DELAY

Value:

200        /* Delay (in ms) before first repetition when
                                           holding the button down */

Definition at line 21 of file scrollbar.c.

SCROLL_MIN_RECT

#define SCROLL_MIN_RECT   4

Definition at line 28 of file scrollbar.c.

SCROLL_MIN_THUMB

#define SCROLL_MIN_THUMB   6

Definition at line 31 of file scrollbar.c.

SCROLL_NOWHERE

#define SCROLL_NOWHERE   0x00 /* Outside the scroll bar */

Definition at line 14 of file scrollbar.c.

SCROLL_REPEAT_DELAY

#define SCROLL_REPEAT_DELAY   50 /* Delay (in ms) between scroll repetitions */

Definition at line 23 of file scrollbar.c.

SCROLL_THUMB

#define SCROLL_THUMB   0x03 /* Thumb rectangle */

Definition at line 17 of file scrollbar.c.

SCROLL_TIMER

#define SCROLL_TIMER   0 /* Scroll timer id */

Definition at line 25 of file scrollbar.c.

SCROLL_TOP_ARROW

#define SCROLL_TOP_ARROW   0x01 /* Top or left arrow */

Definition at line 15 of file scrollbar.c.

SCROLL_TOP_RECT

#define SCROLL_TOP_RECT   0x02 /* Rectangle between the top arrow and the thumb */

Definition at line 16 of file scrollbar.c.

Function Documentation

co_IntCreateScrollBars()

BOOL FASTCALL co_IntCreateScrollBars

(

PWND

Window

)

Definition at line 764 of file scrollbar.c.

{
   PSCROLLBARINFO psbi;
   PSBDATA pSBData;
   ULONG Size, s;
   INT i;

   ASSERT_REFS_CO(Window);

   if (Window->pSBInfo && Window->pSBInfoex)
   {
      /* No need to create it anymore */
      return TRUE;
   }

   /* Allocate memory for all scrollbars (HORZ, VERT, CONTROL) */
   Size = 3 * (sizeof(SBINFOEX));
   if(!(Window->pSBInfoex = ExAllocatePoolWithTag(PagedPool, Size, TAG_SBARINFO)))
   {
      ERR("Unable to allocate memory for scrollbar information for window %p\n", Window->head.h);
      return FALSE;
   }

   RtlZeroMemory(Window->pSBInfoex, Size);

   if(!(Window->pSBInfo = DesktopHeapAlloc( Window->head.rpdesk, sizeof(SBINFO))))
   {
      ERR("Unable to allocate memory for scrollbar information for window %p\n", Window->head.h);
      return FALSE;
   }

   RtlZeroMemory(Window->pSBInfo, sizeof(SBINFO));
   Window->pSBInfo->Vert.posMax = 100;
   Window->pSBInfo->Horz.posMax = 100;

   co_WinPosGetNonClientSize(Window,
                             &Window->rcWindow,
                             &Window->rcClient);

   for(s = SB_HORZ; s <= SB_VERT; s++)
   {
      psbi = IntGetScrollbarInfoFromWindow(Window, s);
      psbi->cbSize = sizeof(SCROLLBARINFO);
      for (i = 0; i < CCHILDREN_SCROLLBAR + 1; i++)
         psbi->rgstate[i] = 0;

      pSBData = IntGetSBData(Window, s);

      IntGetScrollBarRect(Window, s, &(psbi->rcScrollBar));
      IntCalculateThumb(Window, s, psbi, pSBData);
   }

   return TRUE;
}

Referenced by co_IntGetScrollBarInfo(), co_IntSetScrollBarInfo(), co_IntSetScrollInfo(), NtUserEnableScrollBar(), and NtUserSetScrollBarInfo().

co_IntGetScrollBarInfo()

BOOL FASTCALL co_IntGetScrollBarInfo	(	PWND	Window,
		LONG	idObject,
		PSCROLLBARINFO	psbi
	)

Definition at line 682 of file scrollbar.c.

{
   INT Bar;
   PSCROLLBARINFO sbi;
   PSBDATA pSBData;
   ASSERT_REFS_CO(Window);

   Bar = SBOBJ_TO_SBID(idObject);

   if(!SBID_IS_VALID(Bar))
   {
      EngSetLastError(ERROR_INVALID_PARAMETER);
      ERR("Trying to get scrollinfo for unknown scrollbar type %d\n", Bar);
      return FALSE;
   }

   if(!co_IntCreateScrollBars(Window))
   {
      ERR("Failed to create scrollbars for window.\n");
      return FALSE;
   }

   sbi = IntGetScrollbarInfoFromWindow(Window, Bar);
   pSBData = IntGetSBData(Window, Bar);

   IntGetScrollBarRect(Window, Bar, &(sbi->rcScrollBar));
   IntCalculateThumb(Window, Bar, sbi, pSBData);

    /* Scroll bar state */
    psbi->rgstate[0] = 0;
    if ((Bar == SB_HORZ && !(Window->style & WS_HSCROLL))
        || (Bar == SB_VERT && !(Window->style & WS_VSCROLL)))
        psbi->rgstate[0] |= STATE_SYSTEM_INVISIBLE;
    if (pSBData->posMin >= pSBData->posMax - max(pSBData->page - 1, 0))
    {
        if (!(psbi->rgstate[0] & STATE_SYSTEM_INVISIBLE))
            psbi->rgstate[0] |= STATE_SYSTEM_UNAVAILABLE;
        else
            psbi->rgstate[0] |= STATE_SYSTEM_OFFSCREEN;
    }
    if (Bar == SB_CTL && !(Window->style & WS_DISABLED))
        psbi->rgstate[0] |= STATE_SYSTEM_UNAVAILABLE;

   RtlCopyMemory(psbi, sbi, sizeof(SCROLLBARINFO));

   return TRUE;
}

Referenced by IntDrawScrollBar(), IntIsScrollBarVisible(), IntRefeshScrollInterior(), and NtUserGetScrollBarInfo().

co_IntGetScrollInfo()

static BOOL FASTCALL co_IntGetScrollInfo ( PWND  Window, INT  nBar, PSBDATA  pSBData, LPSCROLLINFO  lpsi  )

static

Definition at line 272 of file scrollbar.c.

{
   UINT Mask;
   LPSCROLLINFO psi;

   ASSERT_REFS_CO(Window);

   if(!SBID_IS_VALID(nBar))
   {
      EngSetLastError(ERROR_INVALID_PARAMETER);
      ERR("Trying to get scrollinfo for unknown scrollbar type %d\n", nBar);
      return FALSE;
   }

   if (!Window->pSBInfo)
   {
      ERR("IntGetScrollInfo No window scrollbar info!\n");
      return FALSE;
   }

   psi = IntGetScrollInfoFromWindow(Window, nBar);

   if (lpsi->fMask == SIF_ALL)
   {
      Mask = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_TRACKPOS;
   }
   else
   {
      Mask = lpsi->fMask;
   }

   if (0 != (Mask & SIF_PAGE))
   {
      lpsi->nPage = psi->nPage;
   }

   if (0 != (Mask & SIF_POS))
   {
      lpsi->nPos = psi->nPos;
   }

   if (0 != (Mask & SIF_RANGE))
   {
      lpsi->nMin = psi->nMin;
      lpsi->nMax = psi->nMax;
   }

   if (0 != (Mask & SIF_TRACKPOS))
   {
      lpsi->nTrackPos = psi->nTrackPos;
   }

   return TRUE;
}

Referenced by NtUserSBGetParms().

co_IntSetScrollBarInfo()

BOOL FASTCALL co_IntSetScrollBarInfo	(	PWND	Window,
		LONG	idObject,
		PSETSCROLLBARINFO	psbi
	)

Definition at line 731 of file scrollbar.c.

{
   INT Bar;
   PSCROLLBARINFO sbi;
   LPSCROLLINFO psi;
   ASSERT_REFS_CO(Window);

   Bar = SBOBJ_TO_SBID(idObject);

   if(!SBID_IS_VALID(Bar))
   {
      EngSetLastError(ERROR_INVALID_PARAMETER);
      ERR("Trying to get scrollinfo for unknown scrollbar type %d\n", Bar);
      return FALSE;
   }

   if(!co_IntCreateScrollBars(Window))
   {
      ERR("Failed to create scrollbars for window.\n");
      return FALSE;
   }

   sbi = IntGetScrollbarInfoFromWindow(Window, Bar);
   psi = IntGetScrollInfoFromWindow(Window, Bar);

   psi->nTrackPos = psbi->nTrackPos;
   sbi->reserved  = psbi->reserved;
   RtlCopyMemory(&sbi->rgstate, &psbi->rgstate, sizeof(psbi->rgstate));

   return TRUE;
}

co_IntSetScrollInfo()

static DWORD FASTCALL co_IntSetScrollInfo ( PWND  Window, INT  nBar, LPCSCROLLINFO  lpsi, BOOL  bRedraw  )

static

Definition at line 477 of file scrollbar.c.

{
   /*
    * Update the scrollbar state and set action flags according to
    * what has to be done graphics wise.
    */

   LPSCROLLINFO Info;
   PSCROLLBARINFO psbi;
   UINT new_flags;
   INT action = 0;
   PSBDATA pSBData;
   DWORD OldPos = 0;
   BOOL bChangeParams = FALSE; /* Don't show/hide scrollbar if params don't change */
   UINT MaxPage;
   int MaxPos;

   ASSERT_REFS_CO(Window);

   if(!SBID_IS_VALID(nBar))
   {
      EngSetLastError(ERROR_INVALID_PARAMETER);
      ERR("Trying to set scrollinfo for unknown scrollbar type %d", nBar);
      return FALSE;
   }

   if(!co_IntCreateScrollBars(Window))
   {
      return FALSE;
   }

   if (lpsi->cbSize != sizeof(SCROLLINFO) &&
         lpsi->cbSize != (sizeof(SCROLLINFO) - sizeof(lpsi->nTrackPos)))
   {
      EngSetLastError(ERROR_INVALID_PARAMETER);
      return 0;
   }
   if (lpsi->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL | SIF_PREVIOUSPOS))
   {
      EngSetLastError(ERROR_INVALID_PARAMETER);
      return 0;
   }

   psbi = IntGetScrollbarInfoFromWindow(Window, nBar);
   Info = IntGetScrollInfoFromWindow(Window, nBar);
   pSBData = IntGetSBData(Window, nBar);

   /* Set the page size */
   if (lpsi->fMask & SIF_PAGE)
   {
      if (Info->nPage != lpsi->nPage)
      {
         Info->nPage = lpsi->nPage;
         pSBData->page = lpsi->nPage;
         bChangeParams = TRUE;
      }
   }

   /* Set the scroll pos */
   if (lpsi->fMask & SIF_POS)
   {
      if (Info->nPos != lpsi->nPos)
      {
         OldPos = Info->nPos;
         Info->nPos = lpsi->nPos;
         pSBData->pos = lpsi->nPos;
      }
   }

   /* Set the scroll range */
   if (lpsi->fMask & SIF_RANGE)
   {
      if (lpsi->nMin > lpsi->nMax)
      {
         Info->nMin = lpsi->nMin;
         Info->nMax = lpsi->nMin;
         pSBData->posMin = lpsi->nMin;
         pSBData->posMax = lpsi->nMin;
         bChangeParams = TRUE;
      }
      else if (Info->nMin != lpsi->nMin || Info->nMax != lpsi->nMax)
      {
         Info->nMin = lpsi->nMin;
         Info->nMax = lpsi->nMax;
         pSBData->posMin = lpsi->nMin;
         pSBData->posMax = lpsi->nMax;
         bChangeParams = TRUE;
      }
   }

   /* Make sure the page size is valid */
   MaxPage = abs(Info->nMax - Info->nMin) + 1;
   if (Info->nPage > MaxPage)
   {
      pSBData->page = Info->nPage = MaxPage;
   }

   /* Make sure the pos is inside the range */
   MaxPos = Info->nMax + 1 - (int)max(Info->nPage, 1);
   ASSERT(MaxPos >= Info->nMin);
   if (Info->nPos < Info->nMin)
   {
      pSBData->pos = Info->nPos = Info->nMin;
   }
   else if (Info->nPos > MaxPos)
   {
      pSBData->pos = Info->nPos = MaxPos;
   }

   /*
    * Don't change the scrollbar state if SetScrollInfo is just called
    * with SIF_DISABLENOSCROLL
    */
   if (!(lpsi->fMask & SIF_ALL))
   {
      //goto done;
      return lpsi->fMask & SIF_PREVIOUSPOS ? OldPos : pSBData->pos;
   }

   /* Check if the scrollbar should be hidden or disabled */
   if (lpsi->fMask & (SIF_RANGE | SIF_PAGE | SIF_DISABLENOSCROLL))
   {
      new_flags = Window->pSBInfo->WSBflags;
      if (Info->nMin >= (int)(Info->nMax - max(Info->nPage - 1, 0)))
      {
         /* Hide or disable scroll-bar */
         if (lpsi->fMask & SIF_DISABLENOSCROLL)
         {
            new_flags = ESB_DISABLE_BOTH;
            bChangeParams = TRUE;
         }
         else if ((nBar != SB_CTL) && bChangeParams)
         {
            action = SA_SSI_HIDE;
         }
      }
      else /* Show and enable scroll-bar only if no page only changed. */
      if (lpsi->fMask != SIF_PAGE)
      {
         if ((nBar != SB_CTL) && bChangeParams)
         {
            new_flags = ESB_ENABLE_BOTH;
            action |= SA_SSI_SHOW;
         }
         else if (nBar == SB_CTL)
         {
            new_flags = ESB_ENABLE_BOTH;
         }
      }

      if (Window->pSBInfo->WSBflags != new_flags) /* Check arrow flags */
      {
         Window->pSBInfo->WSBflags = new_flags;
         action |= SA_SSI_REPAINT_ARROWS;
      }
   }

//done:
   if ( action & SA_SSI_HIDE )
   {
      co_UserShowScrollBar(Window, nBar, FALSE, FALSE);
   }
   else
   {
      if ( action & SA_SSI_SHOW )
         if ( co_UserShowScrollBar(Window, nBar, TRUE, TRUE) )
            return lpsi->fMask & SIF_PREVIOUSPOS ? OldPos : pSBData->pos; /* SetWindowPos() already did the painting */
      if (bRedraw)
      {
         if (action & SA_SSI_REPAINT_ARROWS)
         {  // Redraw the entire bar.
            RECTL UpdateRect = psbi->rcScrollBar;
            UpdateRect.left -= Window->rcClient.left - Window->rcWindow.left;
            UpdateRect.right -= Window->rcClient.left - Window->rcWindow.left;
            UpdateRect.top -= Window->rcClient.top - Window->rcWindow.top;
            UpdateRect.bottom -= Window->rcClient.top - Window->rcWindow.top;
            co_UserRedrawWindow(Window, &UpdateRect, 0, RDW_INVALIDATE | RDW_FRAME);
         }
         else
         {
            // Redraw only the interior part of the bar.
            IntRefeshScrollInterior(Window, nBar, psbi);
         }
      } // FIXME: Arrows
/*      else if( action & SA_SSI_REPAINT_ARROWS )
      {
         RECTL UpdateRect = psbi->rcScrollBar;
         UpdateRect.left -= Window->rcClient.left - Window->rcWindow.left;
         UpdateRect.right -= Window->rcClient.left - Window->rcWindow.left;
         UpdateRect.top -= Window->rcClient.top - Window->rcWindow.top;
         UpdateRect.bottom -= Window->rcClient.top - Window->rcWindow.top;
         co_UserRedrawWindow(Window, &UpdateRect, 0, RDW_INVALIDATE | RDW_FRAME);
      }
*/   }

   if (bChangeParams && (nBar == SB_HORZ || nBar == SB_VERT) && (lpsi->fMask & SIF_DISABLENOSCROLL))
   {
       IntEnableScrollBar(nBar == SB_HORZ, psbi, Window->pSBInfo->WSBflags);
   }

   /* Return current position */
   return lpsi->fMask & SIF_PREVIOUSPOS ? OldPos : pSBData->pos;
}

Referenced by NtUserSetScrollInfo().

co_UserShowScrollBar()

DWORD FASTCALL co_UserShowScrollBar	(	PWND	Wnd,
		int	nBar,
		BOOL	fShowH,
		BOOL	fShowV
	)

Definition at line 873 of file scrollbar.c.

{
   ULONG old_style, set_bits = 0, clear_bits = 0;

   ASSERT_REFS_CO(Wnd);

   switch(nBar)
   {
      case SB_CTL:
         {
            //IntUpdateSBInfo(Wnd, SB_CTL); // Is this needed? Was tested w/o!

            co_WinPosShowWindow(Wnd, fShowH ? SW_SHOW : SW_HIDE);
            return TRUE;
         }
      case SB_BOTH:
      case SB_HORZ:
         if (fShowH) set_bits |= WS_HSCROLL;
         else clear_bits |= WS_HSCROLL;
         if( nBar == SB_HORZ ) break;
      /* Fall through */
      case SB_VERT:
         if (fShowV) set_bits |= WS_VSCROLL;
         else clear_bits |= WS_VSCROLL;
         break;
      default:
         EngSetLastError(ERROR_INVALID_PARAMETER);
         return FALSE; /* Nothing to do! */
   }

   old_style = IntSetStyle( Wnd, set_bits, clear_bits );
   if ((old_style & clear_bits) != 0 || (old_style & set_bits) != set_bits)
   {
      //if (Wnd->style & WS_HSCROLL) IntUpdateSBInfo(Wnd, SB_HORZ);
      //if (Wnd->style & WS_VSCROLL) IntUpdateSBInfo(Wnd, SB_VERT);
         /* Frame has been changed, let the window redraw itself */
      co_WinPosSetWindowPos( Wnd, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE
                           | SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED );
      return TRUE;
   }
   return FALSE; /* no frame changes */
}

Referenced by co_IntSetScrollInfo(), co_UserCreateWindowEx(), and NtUserShowScrollBar().

DBG_DEFAULT_CHANNEL()

DBG_DEFAULT_CHANNEL

(

UserScrollbar

)

IntCalculateThumb()

BOOL FASTCALL IntCalculateThumb	(	PWND	Wnd,
		LONG	idObject,
		PSCROLLBARINFO	psbi,
		PSBDATA	pSBData
	)

Definition at line 172 of file scrollbar.c.

{
   INT Thumb, ThumbBox, ThumbPos, cxy, mx;
   RECTL ClientRect;

   switch(idObject)
   {
      case SB_HORZ:
         Thumb = UserGetSystemMetrics(SM_CXHSCROLL);
         cxy = psbi->rcScrollBar.right - psbi->rcScrollBar.left;
         break;
      case SB_VERT:
         Thumb = UserGetSystemMetrics(SM_CYVSCROLL);
         cxy = psbi->rcScrollBar.bottom - psbi->rcScrollBar.top;
         break;
      case SB_CTL:
         IntGetClientRect(Wnd, &ClientRect);
         if(Wnd->style & SBS_VERT)
         {
            Thumb = UserGetSystemMetrics(SM_CYVSCROLL);
            cxy = ClientRect.bottom - ClientRect.top;
         }
         else
         {
            Thumb = UserGetSystemMetrics(SM_CXHSCROLL);
            cxy = ClientRect.right - ClientRect.left;
         }
         break;
      default:
         return FALSE;
   }

   ThumbPos = Thumb;
   /* Calculate Thumb */
   if(cxy <= (2 * Thumb))
   {
      Thumb = cxy / 2;
      psbi->xyThumbTop = 0;
      psbi->xyThumbBottom = 0;
      ThumbPos = Thumb;
   }
   else if (psbi->rgstate[SBRG_TOPRIGHTBTN] == STATE_SYSTEM_UNAVAILABLE &&
            psbi->rgstate[SBRG_BOTTOMLEFTBTN] == STATE_SYSTEM_UNAVAILABLE &&
            pSBData->posMin >= (int)(pSBData->posMax - max(pSBData->page - 1, 0)))
   {
      /* Nothing to scroll */
      psbi->xyThumbTop = 0;
      psbi->xyThumbBottom = 0;
   }
   else
   {
      ThumbBox = pSBData->page ? MINTRACKTHUMB : UserGetSystemMetrics(SM_CXHTHUMB);
      cxy -= (2 * Thumb);
      if(cxy >= ThumbBox)
      {
         if(pSBData->page)
         {
            ThumbBox = max(EngMulDiv(cxy, pSBData->page, pSBData->posMax - pSBData->posMin + 1), ThumbBox);
         }

         if(cxy > ThumbBox)
         {
            mx = pSBData->posMax - max(pSBData->page - 1, 0);
            if(pSBData->posMin < mx)
               ThumbPos = Thumb + EngMulDiv(cxy - ThumbBox, pSBData->pos - pSBData->posMin, mx - pSBData->posMin);
            else
               ThumbPos = Thumb + ThumbBox;
         }

         psbi->xyThumbTop = ThumbPos;
         psbi->xyThumbBottom = ThumbPos + ThumbBox;
      }
      else
      {
         psbi->xyThumbTop = 0;
         psbi->xyThumbBottom = 0;
      }
   }
   psbi->dxyLineButton = Thumb;

   return TRUE;
}

Referenced by co_IntCreateScrollBars(), and co_IntGetScrollBarInfo().

IntDestroyScrollBars()

BOOL FASTCALL IntDestroyScrollBars

(

PWND

Window

)

Definition at line 820 of file scrollbar.c.

{
   if (Window->pSBInfo && Window->pSBInfoex)
   {
      DesktopHeapFree(Window->head.rpdesk, Window->pSBInfo);
      Window->pSBInfo = NULL;
      ExFreePoolWithTag(Window->pSBInfoex, TAG_SBARINFO);
      Window->pSBInfoex = NULL;
      return TRUE;
   }
   return FALSE;
}

Referenced by co_UserFreeWindow().

IntDrawScrollArrows()

static VOID FASTCALL IntDrawScrollArrows ( HDC  hDC, PSCROLLBARINFO  ScrollBarInfo, BOOL  Vertical  )

static

Definition at line 1034 of file scrollbar.c.

{
   RECT RectLT, RectRB;
   INT ScrollDirFlagLT, ScrollDirFlagRB;

   RectLT = RectRB = ScrollBarInfo->rcScrollBar;
   if (Vertical)
   {
      ScrollDirFlagLT = DFCS_SCROLLUP;
      ScrollDirFlagRB = DFCS_SCROLLDOWN;
      RectLT.bottom = RectLT.top + ScrollBarInfo->dxyLineButton;
      RectRB.top = RectRB.bottom - ScrollBarInfo->dxyLineButton;
   }
   else
   {
      ScrollDirFlagLT = DFCS_SCROLLLEFT;
      ScrollDirFlagRB = DFCS_SCROLLRIGHT;
      RectLT.right = RectLT.left + ScrollBarInfo->dxyLineButton;
      RectRB.left = RectRB.right - ScrollBarInfo->dxyLineButton;
   }

   if (ScrollBarInfo->rgstate[SCROLL_TOP_ARROW] & STATE_SYSTEM_PRESSED)
   {
      ScrollDirFlagLT |= DFCS_PUSHED | DFCS_FLAT;
   }
   if (ScrollBarInfo->rgstate[SCROLL_TOP_ARROW] & STATE_SYSTEM_UNAVAILABLE)
   {
      ScrollDirFlagLT |= DFCS_INACTIVE;
   }
   if (ScrollBarInfo->rgstate[SCROLL_BOTTOM_ARROW] & STATE_SYSTEM_PRESSED)
   {
      ScrollDirFlagRB |= DFCS_PUSHED | DFCS_FLAT;
   }
   if (ScrollBarInfo->rgstate[SCROLL_BOTTOM_ARROW] & STATE_SYSTEM_UNAVAILABLE)
   {
      ScrollDirFlagRB |= DFCS_INACTIVE;
   }

   DrawFrameControl(hDC, &RectLT, DFC_SCROLL, ScrollDirFlagLT);
   DrawFrameControl(hDC, &RectRB, DFC_SCROLL, ScrollDirFlagRB);
}

Referenced by IntDrawScrollBar().

IntDrawScrollBar()

void IntDrawScrollBar	(	PWND	Wnd,
		HDC	DC,
		INT	Bar
	)

Definition at line 1102 of file scrollbar.c.

{
   //PSBWND pSBWnd;
   //INT ThumbSize;
   PTHREADINFO pti;
   SCROLLBARINFO Info;
   BOOL Vertical;

   pti = PsGetCurrentThreadWin32Thread();

  /*
   * Get scroll bar info.
   */
   switch (Bar)
   {
      case SB_HORZ:
        Vertical = FALSE;
        break;

      case SB_VERT:
        Vertical = TRUE;
        break;

      case SB_CTL:
        Vertical = (Wnd->style & SBS_VERT) != 0;
        break;

      default:
        return;
   }

   if (!co_IntGetScrollBarInfo(Wnd, IntScrollGetObjectId(Bar), &Info))
   {
      return;
   }

   if (RECTL_bIsEmptyRect(&Info.rcScrollBar))
   {
      return;
   }

  //ThumbSize = pSBWnd->pSBCalc->pxThumbBottom - pSBWnd->pSBCalc->pxThumbTop;

  /*
   * Draw the arrows.
   */
   if (Info.dxyLineButton)
   {
      IntDrawScrollArrows(DC, &Info, Vertical);
   }

  /*
   * Draw the interior.
   */
   IntDrawScrollInterior(Wnd, DC, Bar, Vertical, &Info);

  /*
   * If scroll bar has focus, reposition the caret.
   */
   if ( Wnd == pti->MessageQueue->spwndFocus && Bar == SB_CTL )
   {
      if (Vertical)
      {
          co_IntSetCaretPos(Info.rcScrollBar.top + 1, Info.dxyLineButton + 1);
      }
      else
      {
          co_IntSetCaretPos(Info.dxyLineButton + 1, Info.rcScrollBar.top + 1);
      }
   }
}

Referenced by NC_DoNCPaint(), SCROLL_RefreshScrollBar(), and ScrollBarWndProc_common().

IntDrawScrollInterior()

static void IntDrawScrollInterior ( PWND  pWnd, HDC  hDC, INT  nBar, BOOL  Vertical, PSCROLLBARINFO  ScrollBarInfo  )

static

Definition at line 919 of file scrollbar.c.

{
   INT ThumbSize = ScrollBarInfo->xyThumbBottom - ScrollBarInfo->xyThumbTop;
   INT ThumbTop = ScrollBarInfo->xyThumbTop;
   RECT Rect;
   HBRUSH hSaveBrush, hBrush;
   BOOL TopSelected = FALSE, BottomSelected = FALSE;

   if (ScrollBarInfo->rgstate[SCROLL_TOP_RECT] & STATE_SYSTEM_PRESSED)
      TopSelected = TRUE;
   if (ScrollBarInfo->rgstate[SCROLL_BOTTOM_RECT] & STATE_SYSTEM_PRESSED)
      BottomSelected = TRUE;

   /*
    * Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
    * The window-owned scrollbars need to call DefWndControlColor
    * to correctly setup default scrollbar colors
    */
   if (nBar == SB_CTL)
   {
      hBrush = GetControlBrush( pWnd, hDC, WM_CTLCOLORSCROLLBAR);
      if (!hBrush)
         hBrush = IntGetSysColorBrush(COLOR_SCROLLBAR);
   }
   else
   {
      hBrush = DefWndControlColor(hDC, CTLCOLOR_SCROLLBAR);
   }

   hSaveBrush = NtGdiSelectBrush(hDC, hBrush);

   /* Calculate the scroll rectangle */
   if (Vertical)
   {
      Rect.top = ScrollBarInfo->rcScrollBar.top + ScrollBarInfo->dxyLineButton;
      Rect.bottom = ScrollBarInfo->rcScrollBar.bottom - ScrollBarInfo->dxyLineButton;
      Rect.left = ScrollBarInfo->rcScrollBar.left;
      Rect.right = ScrollBarInfo->rcScrollBar.right;
   }
   else
   {
      Rect.top = ScrollBarInfo->rcScrollBar.top;
      Rect.bottom = ScrollBarInfo->rcScrollBar.bottom;
      Rect.left = ScrollBarInfo->rcScrollBar.left + ScrollBarInfo->dxyLineButton;
      Rect.right = ScrollBarInfo->rcScrollBar.right - ScrollBarInfo->dxyLineButton;
   }

   /* Draw the scroll rectangles and thumb */
   if (!ScrollBarInfo->xyThumbBottom)
   {
      NtGdiPatBlt(hDC, Rect.left, Rect.top, Rect.right - Rect.left,
         Rect.bottom - Rect.top, PATCOPY);

      /* Cleanup and return */
      NtGdiSelectBrush(hDC, hSaveBrush);
      return;
   }

   ThumbTop -= ScrollBarInfo->dxyLineButton;

   if (ScrollBarInfo->dxyLineButton)
   {
      if (Vertical)
      {
         if (ThumbSize)
         {
            NtGdiPatBlt(hDC, Rect.left, Rect.top, Rect.right - Rect.left,
                   ThumbTop, TopSelected ? BLACKNESS : PATCOPY);
            Rect.top += ThumbTop;
            NtGdiPatBlt(hDC, Rect.left, Rect.top + ThumbSize, Rect.right - Rect.left,
               Rect.bottom - Rect.top - ThumbSize, BottomSelected ? BLACKNESS : PATCOPY);
            Rect.bottom = Rect.top + ThumbSize;
         }
         else
         {
            if (ThumbTop)
            {
               NtGdiPatBlt(hDC, Rect.left, ScrollBarInfo->dxyLineButton,
                  Rect.right - Rect.left, Rect.bottom - Rect.top, PATCOPY);
            }
         }
      }
      else
      {
         if (ThumbSize)
         {
            NtGdiPatBlt(hDC, Rect.left, Rect.top, ThumbTop,
               Rect.bottom - Rect.top, TopSelected ? BLACKNESS : PATCOPY);
            Rect.left += ThumbTop;
            NtGdiPatBlt(hDC, Rect.left + ThumbSize, Rect.top,
               Rect.right - Rect.left - ThumbSize, Rect.bottom - Rect.top,
               BottomSelected ? BLACKNESS : PATCOPY);
            Rect.right = Rect.left + ThumbSize;
         }
         else
         {
            if (ThumbTop)
            {
               NtGdiPatBlt(hDC, ScrollBarInfo->dxyLineButton, Rect.top,
                  Rect.right - Rect.left, Rect.bottom - Rect.top, PATCOPY);
            }
         }
      }
   }

   /* Draw the thumb */
   if (ThumbSize)
      DrawEdge(hDC, &Rect, EDGE_RAISED, BF_RECT | BF_MIDDLE);

   /* Cleanup */
   NtGdiSelectBrush(hDC, hSaveBrush);
}

Referenced by IntDrawScrollBar(), and IntRefeshScrollInterior().

IntEnableScrollBar()

BOOL APIENTRY IntEnableScrollBar	(	BOOL	Horz,
		PSCROLLBARINFO	Info,
		UINT	wArrows
	)

Definition at line 834 of file scrollbar.c.

{
   BOOL Chg = FALSE;
   switch(wArrows)
   {
      case ESB_DISABLE_BOTH:
         CHANGERGSTATE(SBRG_TOPRIGHTBTN, STATE_SYSTEM_UNAVAILABLE);
         CHANGERGSTATE(SBRG_BOTTOMLEFTBTN, STATE_SYSTEM_UNAVAILABLE);
         break;
      case ESB_DISABLE_RTDN:
         if(Horz)
         {
            CHANGERGSTATE(SBRG_BOTTOMLEFTBTN, STATE_SYSTEM_UNAVAILABLE);
         }
         else
         {
            CHANGERGSTATE(SBRG_TOPRIGHTBTN, STATE_SYSTEM_UNAVAILABLE);
         }
         break;
      case ESB_DISABLE_LTUP:
         if(Horz)
         {
            CHANGERGSTATE(SBRG_TOPRIGHTBTN, STATE_SYSTEM_UNAVAILABLE);
         }
         else
         {
            CHANGERGSTATE(SBRG_BOTTOMLEFTBTN, STATE_SYSTEM_UNAVAILABLE);
         }
         break;
      case ESB_ENABLE_BOTH:
         CHANGERGSTATE(SBRG_TOPRIGHTBTN, 0);
         CHANGERGSTATE(SBRG_BOTTOMLEFTBTN, 0);
         break;
   }
   return Chg;
}

Referenced by co_IntSetScrollInfo(), and NtUserEnableScrollBar().

IntGetSBData()

PSBDATA FASTCALL IntGetSBData	(	PWND	pwnd,
		INT	Bar
	)

Definition at line 83 of file scrollbar.c.

{
   PSBWND pSBWnd;
   PSBINFO pSBInfo;

   pSBInfo = pwnd->pSBInfo;
   switch (Bar)
   {
       case SB_HORZ:
         return &pSBInfo->Horz;
       case SB_VERT:
         return &pSBInfo->Vert;
       case SB_CTL:
         if ( pwnd->cbwndExtra < (sizeof(SBWND)-sizeof(WND)) )
         {
            ERR("IntGetSBData Wrong Extra bytes for CTL Scrollbar!\n");
            return 0;
         }
         pSBWnd = (PSBWND)pwnd;
         return (PSBDATA)&pSBWnd->SBCalc;
       default:
            ERR("IntGetSBData Bad Bar!\n");
   }
   return NULL;
}

Referenced by co_IntCreateScrollBars(), co_IntGetScrollBarInfo(), co_IntSetScrollInfo(), GetScrollPos(), GetScrollRange(), IntScrollGetThumbVal(), and RealGetScrollInfo().

IntGetScrollBarRect()

BOOL FASTCALL IntGetScrollBarRect	(	PWND	Wnd,
		INT	nBar,
		RECTL *	lprect
	)

Definition at line 110 of file scrollbar.c.

{
   BOOL vertical;
   *lprect = Wnd->rcClient;

   RECTL_vOffsetRect( lprect, -Wnd->rcWindow.left, -Wnd->rcWindow.top );
   if (Wnd->ExStyle & WS_EX_LAYOUTRTL)
      mirror_rect( &Wnd->rcWindow, lprect );

   switch (nBar)
   {
      case SB_HORZ:
         lprect->top = lprect->bottom;
         lprect->bottom += UserGetSystemMetrics (SM_CYHSCROLL);
         if (Wnd->style & WS_BORDER)
         {
            lprect->left--;
            lprect->right++;
         }
         else if (Wnd->style & WS_VSCROLL)
         {
            lprect->right++;
         }
         vertical = FALSE;
         break;

      case SB_VERT:
         if(Wnd->ExStyle & WS_EX_LEFTSCROLLBAR)
         {
            lprect->right = lprect->left;
            lprect->left -= UserGetSystemMetrics(SM_CXVSCROLL);
         }
         else
         {
            lprect->left = lprect->right;
            lprect->right += UserGetSystemMetrics(SM_CXVSCROLL);
         }
         if (Wnd->style & WS_BORDER)
         {
            lprect->top--;
            lprect->bottom++;
         }
         else if (Wnd->style & WS_HSCROLL)
         {
            lprect->bottom++;
         }
         vertical = TRUE;
         break;

      case SB_CTL:
         IntGetClientRect (Wnd, lprect);
         vertical = !!(Wnd->style & SBS_VERT);
         break;

      default:
         return FALSE;
   }

   return vertical;
}

Referenced by co_IntCreateScrollBars(), and co_IntGetScrollBarInfo().

IntRefeshScrollInterior()

static void IntRefeshScrollInterior ( PWND  pWnd, INT  nBar, PSCROLLBARINFO  psbi  )

static

Definition at line 1087 of file scrollbar.c.

{
   HDC hdc;
   BOOL Vertical = ((nBar == SB_CTL) ? ((pWnd->style & SBS_VERT) != 0) : (nBar == SB_VERT));

   hdc = UserGetDCEx(pWnd, NULL, DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW));
   if (hdc)
   {  /* Get updated info. */
      co_IntGetScrollBarInfo(pWnd, IntScrollGetObjectId(nBar), psbi);
      IntDrawScrollInterior(pWnd, hdc, nBar, Vertical, psbi);
      UserReleaseDC(pWnd, hdc, FALSE);
   }
}

Referenced by co_IntSetScrollInfo().

IntScrollGetObjectId()

static LONG FASTCALL IntScrollGetObjectId ( INT  SBType )

static

Definition at line 1077 of file scrollbar.c.

{
   if (SBType == SB_VERT)
       return OBJID_VSCROLL;
   if (SBType == SB_HORZ)
       return OBJID_HSCROLL;
   return OBJID_CLIENT;
}

Referenced by IntDrawScrollBar(), and IntRefeshScrollInterior().

mirror_rect()

static void mirror_rect ( const RECT *  window_rect, RECT *  rect  )

inlinestatic

Definition at line 74 of file scrollbar.c.

{
    int width = window_rect->right - window_rect->left;
    int tmp = rect->left;
    rect->left = width - rect->right;
    rect->right = width - tmp;
}

Referenced by IntGetScrollBarRect(), and IntScrollGetScrollBarRect().

NEWco_IntGetScrollInfo()

BOOL FASTCALL NEWco_IntGetScrollInfo	(	PWND	pWnd,
		INT	nBar,
		PSBDATA	pSBData,
		LPSCROLLINFO	lpsi
	)

Definition at line 328 of file scrollbar.c.

{
  UINT Mask;
  PSBTRACK pSBTrack = pWnd->head.pti->pSBTrack;

  if (!SBID_IS_VALID(nBar))
  {
     EngSetLastError(ERROR_INVALID_PARAMETER);
     ERR("Trying to get scrollinfo for unknown scrollbar type %d\n", nBar);
     return FALSE;
  }

  if (!pWnd->pSBInfo || !pSBTrack) return FALSE;

  Mask = lpsi->fMask;

  if (0 != (Mask & SIF_PAGE))
  {
     lpsi->nPage = pSBData->page;
  }

  if (0 != (Mask & SIF_POS))
  {
     lpsi->nPos = pSBData->pos;
  }

  if (0 != (Mask & SIF_RANGE))
  {
     lpsi->nMin = pSBData->posMin;
     lpsi->nMax = pSBData->posMax;
  }

  if (0 != (Mask & SIF_TRACKPOS))
  {
     if ( pSBTrack &&
          pSBTrack->nBar == nBar &&
          pSBTrack->spwndTrack == pWnd )
        lpsi->nTrackPos = pSBTrack->posNew;
     else
        lpsi->nTrackPos = pSBData->pos;
  }
  return (Mask & SIF_ALL) !=0;
}

NtUserEnableScrollBar()

BOOL APIENTRY NtUserEnableScrollBar	(	HWND	hWnd,
		UINT	wSBflags,
		UINT	wArrows
	)

Definition at line 1311 of file scrollbar.c.

{
   UINT OrigArrows;
   PWND Window = NULL;
   PSCROLLBARINFO InfoV = NULL, InfoH = NULL;
   BOOL Chg = FALSE;
   DECLARE_RETURN(BOOL);
   USER_REFERENCE_ENTRY Ref;

   TRACE("Enter NtUserEnableScrollBar\n");
   UserEnterExclusive();

   if (!(Window = UserGetWindowObject(hWnd)) ||
        UserIsDesktopWindow(Window) || UserIsMessageWindow(Window))
   {
      RETURN(FALSE);
   }
   UserRefObjectCo(Window, &Ref);

   if (!co_IntCreateScrollBars(Window))
   {
      RETURN( FALSE);
   }

   OrigArrows = Window->pSBInfo->WSBflags;
   Window->pSBInfo->WSBflags = wArrows;

   if (wSBflags == SB_CTL)
   {
      if ((wArrows == ESB_DISABLE_BOTH || wArrows == ESB_ENABLE_BOTH))
         IntEnableWindow(hWnd, (wArrows == ESB_ENABLE_BOTH));

      RETURN(TRUE);
   }

   if(wSBflags != SB_BOTH && !SBID_IS_VALID(wSBflags))
   {
      EngSetLastError(ERROR_INVALID_PARAMETER);
      ERR("Trying to set scrollinfo for unknown scrollbar type %u", wSBflags);
      RETURN(FALSE);
   }

   switch(wSBflags)
   {
      case SB_BOTH:
         InfoV = IntGetScrollbarInfoFromWindow(Window, SB_VERT);
         /* Fall through */
      case SB_HORZ:
         InfoH = IntGetScrollbarInfoFromWindow(Window, SB_HORZ);
         break;
      case SB_VERT:
         InfoV = IntGetScrollbarInfoFromWindow(Window, SB_VERT);
         break;
      default:
         RETURN(FALSE);
   }

   if(InfoV)
      Chg = IntEnableScrollBar(FALSE, InfoV, wArrows);

   if(InfoH)
      Chg = (IntEnableScrollBar(TRUE, InfoH, wArrows) || Chg);

   ERR("FIXME: EnableScrollBar wSBflags %u wArrows %u Chg %d\n", wSBflags, wArrows, Chg);
// Done in user32:
//   SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE );

   RETURN( Chg);
   if (OrigArrows == wArrows) RETURN( FALSE);
   RETURN( TRUE);

CLEANUP:
   if (Window)
      UserDerefObjectCo(Window);

   TRACE("Leave NtUserEnableScrollBar, ret=%i\n",_ret_);
   UserLeave();
   END_CLEANUP;
}

Referenced by EnableScrollBar(), and ResetUserApiHook().

NtUserGetScrollBarInfo()

BOOL APIENTRY NtUserGetScrollBarInfo	(	HWND	hWnd,
		LONG	idObject,
		PSCROLLBARINFO	psbi
	)

Definition at line 1201 of file scrollbar.c.

{
   NTSTATUS Status;
   SCROLLBARINFO sbi;
   PWND Window;
   BOOL Ret;
   DECLARE_RETURN(BOOL);
   USER_REFERENCE_ENTRY Ref;

   TRACE("Enter NtUserGetScrollBarInfo\n");
   UserEnterExclusive();

   Status = MmCopyFromCaller(&sbi, psbi, sizeof(SCROLLBARINFO));
   if(!NT_SUCCESS(Status) || (sbi.cbSize != sizeof(SCROLLBARINFO)))
   {
      SetLastNtError(Status);
      RETURN(FALSE);
   }

   if(!(Window = UserGetWindowObject(hWnd)))
   {
      RETURN(FALSE);
   }

   UserRefObjectCo(Window, &Ref);
   Ret = co_IntGetScrollBarInfo(Window, idObject, &sbi);
   UserDerefObjectCo(Window);

   Status = MmCopyToCaller(psbi, &sbi, sizeof(SCROLLBARINFO));
   if(!NT_SUCCESS(Status))
   {
      SetLastNtError(Status);
      Ret = FALSE;
   }

   RETURN( Ret);

CLEANUP:
   TRACE("Leave NtUserGetScrollBarInfo, ret=%i\n",_ret_);
   UserLeave();
   END_CLEANUP;

}

Referenced by GetScrollBarInfo(), IntGetScrollBarInfo(), and ScrollBarWndProc_common().

NtUserSBGetParms()

BOOL APIENTRY NtUserSBGetParms	(	HWND	hWnd,
		int	fnBar,
		PSBDATA	pSBData,
		LPSCROLLINFO	lpsi
	)

Definition at line 1247 of file scrollbar.c.

{
   PWND Window;
   SCROLLINFO psi;
   BOOL Ret;
   SBDATA SBDataSafe;
   DECLARE_RETURN(BOOL);
   USER_REFERENCE_ENTRY Ref;

   TRACE("Enter NtUserGetScrollInfo\n");
   UserEnterShared();

   _SEH2_TRY
   {
      RtlCopyMemory(&psi, lpsi, sizeof(SCROLLINFO));
      if (pSBData)
      {
         RtlCopyMemory(&SBDataSafe, pSBData, sizeof(SBDATA));
      }
   }
   _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
   {
      ERR("NtUserGetScrollInfo Failed size.\n");
      SetLastNtError(_SEH2_GetExceptionCode());
      _SEH2_YIELD(RETURN(FALSE));
   }
   _SEH2_END

   if(!(Window = UserGetWindowObject(hWnd)))
   {
      ERR("NtUserGetScrollInfo Bad window.\n");
      RETURN(FALSE);
   }

   UserRefObjectCo(Window, &Ref);
   Ret = co_IntGetScrollInfo(Window, fnBar, &SBDataSafe, &psi);
   UserDerefObjectCo(Window);

   _SEH2_TRY
   {
      RtlCopyMemory(lpsi, &psi, sizeof(SCROLLINFO));
   }
   _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
   {
      ERR("NtUserGetScrollInfo Failed copy to user.\n");
      SetLastNtError(_SEH2_GetExceptionCode());
      _SEH2_YIELD(RETURN(FALSE));
   }
   _SEH2_END

   RETURN( Ret);

CLEANUP:
   TRACE("Leave NtUserGetScrollInfo, ret=%i\n",_ret_);
   UserLeave();
   END_CLEANUP;
}

Referenced by RealGetScrollInfo(), and ScrollBarWndProc_common().

NtUserSetScrollBarInfo()

BOOL APIENTRY NtUserSetScrollBarInfo	(	HWND	hWnd,
		LONG	idObject,
		SETSCROLLBARINFO *	info
	)

Definition at line 1472 of file scrollbar.c.

{
   PWND Window = NULL;
   SETSCROLLBARINFO Safeinfo;
   PSCROLLBARINFO sbi;
   LPSCROLLINFO psi;
   NTSTATUS Status;
   LONG Obj;
   DECLARE_RETURN(BOOL);
   USER_REFERENCE_ENTRY Ref;

   TRACE("Enter NtUserSetScrollBarInfo\n");
   UserEnterExclusive();

   if(!(Window = UserGetWindowObject(hWnd)))
   {
      RETURN( FALSE);
   }
   UserRefObjectCo(Window, &Ref);

   Obj = SBOBJ_TO_SBID(idObject);
   if(!SBID_IS_VALID(Obj))
   {
      EngSetLastError(ERROR_INVALID_PARAMETER);
      ERR("Trying to set scrollinfo for unknown scrollbar type %d\n", Obj);
      RETURN( FALSE);
   }

   if(!co_IntCreateScrollBars(Window))
   {
      RETURN(FALSE);
   }

   Status = MmCopyFromCaller(&Safeinfo, info, sizeof(SETSCROLLBARINFO));
   if(!NT_SUCCESS(Status))
   {
      SetLastNtError(Status);
      RETURN(FALSE);
   }

   sbi = IntGetScrollbarInfoFromWindow(Window, Obj);
   psi = IntGetScrollInfoFromWindow(Window, Obj);

   psi->nTrackPos = Safeinfo.nTrackPos;
   sbi->reserved = Safeinfo.reserved;
   RtlCopyMemory(&sbi->rgstate, &Safeinfo.rgstate, sizeof(Safeinfo.rgstate));

   RETURN(TRUE);

CLEANUP:
   if (Window)
      UserDerefObjectCo(Window);

   TRACE("Leave NtUserSetScrollBarInfo, ret=%i\n",_ret_);
   UserLeave();
   END_CLEANUP;
}

Referenced by IntScrollHandleScrollEvent(), and IntUpdateScrollArrows().

NtUserSetScrollInfo()

DWORD APIENTRY NtUserSetScrollInfo	(	HWND	hWnd,
		int	fnBar,
		LPCSCROLLINFO	lpsi,
		BOOL	bRedraw
	)

Definition at line 1396 of file scrollbar.c.

{
   PWND Window = NULL;
   NTSTATUS Status;
   SCROLLINFO ScrollInfo;
   DECLARE_RETURN(DWORD);
   USER_REFERENCE_ENTRY Ref;

   TRACE("Enter NtUserSetScrollInfo\n");
   UserEnterExclusive();

   if(!(Window = UserGetWindowObject(hWnd)) ||
        UserIsDesktopWindow(Window) || UserIsMessageWindow(Window))
   {
      RETURN( 0);
   }
   UserRefObjectCo(Window, &Ref);

   Status = MmCopyFromCaller(&ScrollInfo, lpsi, sizeof(SCROLLINFO) - sizeof(ScrollInfo.nTrackPos));
   if(!NT_SUCCESS(Status))
   {
      SetLastNtError(Status);
      RETURN( 0);
   }

   RETURN(co_IntSetScrollInfo(Window, fnBar, &ScrollInfo, bRedraw));

CLEANUP:
   if (Window)
      UserDerefObjectCo(Window);

   TRACE("Leave NtUserSetScrollInfo, ret=%lu\n", _ret_);
   UserLeave();
   END_CLEANUP;

}

Referenced by IntScrollCreateScrollBar(), IntSetScrollInfo(), and RealSetScrollInfo().

NtUserShowScrollBar()

DWORD APIENTRY NtUserShowScrollBar	(	HWND	hWnd,
		int	nBar,
		DWORD	bShow
	)

Definition at line 1438 of file scrollbar.c.

{
   PWND Window;
   DECLARE_RETURN(DWORD);
   DWORD ret;
   USER_REFERENCE_ENTRY Ref;

   TRACE("Enter NtUserShowScrollBar\n");
   UserEnterExclusive();

   if (!(Window = UserGetWindowObject(hWnd)))
   {
      RETURN(0);
   }

   UserRefObjectCo(Window, &Ref);
   ret = co_UserShowScrollBar(Window, nBar, (nBar == SB_VERT) ? 0 : bShow,
                                            (nBar == SB_HORZ) ? 0 : bShow);
   UserDerefObjectCo(Window);

   RETURN(ret);

CLEANUP:
   TRACE("Leave NtUserShowScrollBar,  ret%lu\n", _ret_);
   UserLeave();
   END_CLEANUP;

}

Referenced by ShowScrollBar().

ScrollBarWndProc()

LRESULT APIENTRY ScrollBarWndProc	(	HWND	hWnd,
		UINT	Msg,
		WPARAM	wParam,
		LPARAM	lParam
	)

Definition at line 1176 of file scrollbar.c.

{
   LRESULT lResult = 0;
   PWND pWnd;
   pWnd = UserGetWindowObject(hWnd);
   if (!pWnd) return 0;

   switch(Msg)
   {
       case WM_ENABLE:
       {
           if (pWnd->pSBInfo)
           {
              pWnd->pSBInfo->WSBflags = wParam ? ESB_ENABLE_BOTH : ESB_DISABLE_BOTH;
           }
       }
       break;
   }
   return lResult;
}

Referenced by NtUserMessageCall().