painting.c File Reference

#include <win32k.h>

Include dependency graph for painting.c:

Go to the source code of this file.

Functions
	DBG_DEFAULT_CHANNEL (UserPainting)
BOOL	UserExtTextOutW (HDC hdc, INT x, INT y, UINT flags, PRECTL lprc, LPCWSTR lpString, UINT count)
IntIntersectWithParents
Intersect window rectangle with all parent client rectangles. Parameters Child Pointer to child window to start intersecting from. WindowRect Pointer to rectangle that we want to intersect in screen coordinates on input and intersected rectangle on output (if TRUE is returned). Returns If any parent is minimized or invisible or the resulting rectangle is empty then FALSE is returned. Otherwise TRUE is returned.
BOOL FASTCALL	IntIntersectWithParents (PWND Child, RECTL *WindowRect)
BOOL FASTCALL	IntValidateParents (PWND Child, BOOL Recurse)
VOID FASTCALL	IntSendSyncPaint (PWND Wnd, ULONG Flags)
HRGN FASTCALL	IntCalcWindowRgn (PWND Wnd, BOOL Client)
HRGN FASTCALL	IntGetNCUpdateRgn (PWND Window, BOOL Validate)
VOID FASTCALL	IntSendNCPaint (PWND pWnd, HRGN hRgn)
VOID FASTCALL	IntSendChildNCPaint (PWND pWnd)
VOID FASTCALL	co_IntPaintWindows (PWND Wnd, ULONG Flags, BOOL Recurse)
VOID FASTCALL	co_IntUpdateWindows (PWND Wnd, ULONG Flags, BOOL Recurse)
VOID FASTCALL	UserUpdateWindows (PWND pWnd, ULONG Flags)
VOID FASTCALL	UserSyncAndPaintWindows (PWND pWnd, ULONG Flags)
VOID FASTCALL	IntInvalidateWindows (PWND Wnd, PREGION Rgn, ULONG Flags)
BOOL FASTCALL	IntIsWindowDrawable (PWND Wnd)
BOOL FASTCALL	co_UserRedrawWindow (PWND Window, const RECTL *UpdateRect, PREGION UpdateRgn, ULONG Flags)
VOID FASTCALL	PaintSuspendedWindow (PWND pwnd, HRGN hrgnOrig)
VOID FASTCALL	UpdateTheadChildren (PWND pWnd, HRGN hRgn)
VOID FASTCALL	UpdateThreadWindows (PWND pWnd, PTHREADINFO pti, HRGN hRgn)
BOOL FASTCALL	IntIsWindowDirty (PWND Wnd)
PWND FASTCALL	IntFindWindowToRepaint (PWND Window, PTHREADINFO Thread)
VOID FASTCALL	IntPaintWindow (PWND Window)
BOOL FASTCALL	IntGetPaintMessage (PWND Window, UINT MsgFilterMin, UINT MsgFilterMax, PTHREADINFO Thread, MSG *Message, BOOL Remove)
BOOL FASTCALL	IntPrintWindow (PWND pwnd, HDC hdcBlt, UINT nFlags)
BOOL FASTCALL	IntFlashWindowEx (PWND pWnd, PFLASHWINFO pfwi)
HDC FASTCALL	IntBeginPaint (PWND Window, PPAINTSTRUCT Ps)
BOOL FASTCALL	IntEndPaint (PWND Wnd, PPAINTSTRUCT Ps)
BOOL FASTCALL	IntFillWindow (PWND pWndParent, PWND pWnd, HDC hDC, HBRUSH hBrush)
HDC APIENTRY	NtUserBeginPaint (HWND hWnd, PAINTSTRUCT *UnsafePs)
BOOL APIENTRY	NtUserEndPaint (HWND hWnd, CONST PAINTSTRUCT *pUnsafePs)
BOOL APIENTRY	NtUserFillWindow (HWND hWndParent, HWND hWnd, HDC hDC, HBRUSH hBrush)
BOOL APIENTRY	NtUserFlashWindowEx (IN PFLASHWINFO pfwi)
INT FASTCALL	co_UserGetUpdateRgn (PWND Window, HRGN hRgn, BOOL bErase)
BOOL FASTCALL	co_UserGetUpdateRect (PWND Window, PRECT pRect, BOOL bErase)
INT APIENTRY	NtUserGetUpdateRgn (HWND hWnd, HRGN hRgn, BOOL bErase)
BOOL APIENTRY	NtUserGetUpdateRect (HWND hWnd, LPRECT UnsafeRect, BOOL bErase)
BOOL APIENTRY	NtUserRedrawWindow (HWND hWnd, CONST RECT *lprcUpdate, HRGN hrgnUpdate, UINT flags)
BOOL	UserDrawCaptionText (PWND pWnd, HDC hDc, const PUNICODE_STRING Text, const RECTL *lpRc, UINT uFlags, HFONT hFont)
BOOL	UserDrawCaption (PWND pWnd, HDC hDc, RECTL *lpRc, HFONT hFont, HICON hIcon, const PUNICODE_STRING Str, UINT uFlags)
INT FASTCALL	UserRealizePalette (HDC hdc)
BOOL APIENTRY	NtUserDrawCaptionTemp (HWND hWnd, HDC hDC, LPCRECT lpRc, HFONT hFont, HICON hIcon, const PUNICODE_STRING str, UINT uFlags)
BOOL APIENTRY	NtUserDrawCaption (HWND hWnd, HDC hDC, LPCRECT lpRc, UINT uFlags)
INT FASTCALL	co_UserExcludeUpdateRgn (HDC hDC, PWND Window)
INT APIENTRY	NtUserExcludeUpdateRgn (HDC hDC, HWND hWnd)
BOOL APIENTRY	NtUserInvalidateRect (HWND hWnd, CONST RECT *lpUnsafeRect, BOOL bErase)
BOOL APIENTRY	NtUserInvalidateRgn (HWND hWnd, HRGN hRgn, BOOL bErase)
BOOL APIENTRY	NtUserPrintWindow (HWND hwnd, HDC hdcBlt, UINT nFlags)
BOOL APIENTRY	NtUserValidateRect (HWND hWnd, const RECT *lpRect)

Function Documentation

co_IntPaintWindows()

VOID FASTCALL co_IntPaintWindows	(	PWND	Wnd,
		ULONG	Flags,
		BOOL	Recurse
	)

Definition at line 405 of file painting.c.

{
   HDC hDC;
   HWND hWnd = UserHMGetHandle(Wnd);
   HRGN TempRegion = NULL;
 
   Wnd->state &= ~WNDS_PAINTNOTPROCESSED;
 
   if (Wnd->state & WNDS_SENDNCPAINT ||
       Wnd->state & WNDS_SENDERASEBACKGROUND)
   {
      if (!(Wnd->style & WS_VISIBLE))
      {
         Wnd->state &= ~(WNDS_SENDNCPAINT|WNDS_SENDERASEBACKGROUND|WNDS_ERASEBACKGROUND);
         return;
      }
      else
      {
         if (Wnd->hrgnUpdate == NULL)
         {
            Wnd->state &= ~(WNDS_SENDERASEBACKGROUND|WNDS_ERASEBACKGROUND);
         }
 
         if (Wnd->head.pti == PsGetCurrentThreadWin32Thread())
         {
            if (Wnd->state & WNDS_SENDNCPAINT)
            {
               TempRegion = IntGetNCUpdateRgn(Wnd, TRUE);
 
               IntSendNCPaint(Wnd, TempRegion);
 
               if (TempRegion > HRGN_WINDOW && GreIsHandleValid(TempRegion))
               {
                  /* NOTE: The region can already be deleted! */
                  GreDeleteObject(TempRegion);
               }
            }
 
            if (Wnd->state & WNDS_SENDERASEBACKGROUND)
            {
               PTHREADINFO pti = PsGetCurrentThreadWin32Thread();
               if (Wnd->hrgnUpdate)
               {
                  hDC = UserGetDCEx( Wnd,
                                     Wnd->hrgnUpdate,
                                     DCX_CACHE|DCX_USESTYLE|DCX_INTERSECTRGN|DCX_KEEPCLIPRGN);
 
                  if (Wnd->head.pti->ppi != pti->ppi)
                  {
                     ERR("Sending DC to another Process!!!\n");
                  }
 
                  Wnd->state &= ~(WNDS_SENDERASEBACKGROUND|WNDS_ERASEBACKGROUND);
                  // Kill the loop, so Clear before we send.
                  if (!co_IntSendMessage(hWnd, WM_ERASEBKGND, (WPARAM)hDC, 0))
                  {
                     Wnd->state |= (WNDS_SENDERASEBACKGROUND|WNDS_ERASEBACKGROUND);
                  }
                  UserReleaseDC(Wnd, hDC, FALSE);
               }
            }
         }
 
      }
   }
 
   /*
    * Check that the window is still valid at this point
    */
   if (!IntIsWindow(hWnd))
   {
      return;
   }
 
   /*
    * Paint child windows.
    */
 
   if (!(Flags & RDW_NOCHILDREN) &&
       !(Wnd->style & WS_MINIMIZE) &&
        ( Flags & RDW_ALLCHILDREN ||
         (Flags & RDW_CLIPCHILDREN && Wnd->style & WS_CLIPCHILDREN) ) )
   {
      HWND *List, *phWnd;
      PTHREADINFO pti = PsGetCurrentThreadWin32Thread();
 
      if ((List = IntWinListChildren(Wnd)))
      {
         for (phWnd = List; *phWnd; ++phWnd)
         {
            if ((Wnd = UserGetWindowObject(*phWnd)) == NULL)
               continue;
 
            if (Wnd->head.pti != pti && Wnd->style & WS_CHILD)
               continue;
 
            if (Wnd->style & WS_VISIBLE)
            {
               USER_REFERENCE_ENTRY Ref;
               UserRefObjectCo(Wnd, &Ref);
               co_IntPaintWindows(Wnd, Flags, TRUE);
               UserDerefObjectCo(Wnd);
            }
         }
         ExFreePoolWithTag(List, USERTAG_WINDOWLIST);
      }
   }
}

Referenced by co_IntGetUpdateRgn(), co_IntPaintWindows(), co_IntUpdateWindows(), co_UserGetUpdateRect(), co_UserGetUpdateRgn(), co_WinPosSetWindowPos(), IntPaintWindow(), and UserSyncAndPaintWindows().

co_IntUpdateWindows()

VOID FASTCALL co_IntUpdateWindows	(	PWND	Wnd,
		ULONG	Flags,
		BOOL	Recurse
	)

Definition at line 521 of file painting.c.

{
   HWND hWnd = UserHMGetHandle(Wnd);
   USER_REFERENCE_ENTRY Ref;
 
   if ( Wnd->hrgnUpdate != NULL || Wnd->state & WNDS_INTERNALPAINT )
   {
      if (Wnd->hrgnUpdate)
      {
         if (!IntValidateParents(Wnd, Recurse))
         {
            return;
         }
      }
 
      if (Wnd->state & WNDS_INTERNALPAINT)
      {
          Wnd->state &= ~WNDS_INTERNALPAINT;
 
          if (Wnd->hrgnUpdate == NULL)
             MsqDecPaintCountQueue(Wnd->head.pti);
      }
 
      Wnd->state |= WNDS_PAINTNOTPROCESSED;
      Wnd->state &= ~WNDS_UPDATEDIRTY;
 
      Wnd->state2 |= WNDS2_WMPAINTSENT;
 
      UserRefObjectCo(Wnd, &Ref);
      co_IntSendMessage(hWnd, WM_PAINT, 0, 0);
 
      if (Wnd->state & WNDS_PAINTNOTPROCESSED)
      {
         co_IntPaintWindows(Wnd, RDW_NOCHILDREN, FALSE);
      }
      UserDerefObjectCo(Wnd);
   }
 
   // Force flags as a toggle. Fixes msg:test_paint_messages:WmChildPaintNc.
   Flags = (Flags & RDW_NOCHILDREN) ? RDW_NOCHILDREN : RDW_ALLCHILDREN; // All children is the default.
 
  /*
   * Update child windows.
   */
 
   if (!(Flags & RDW_NOCHILDREN)  &&
        (Flags & RDW_ALLCHILDREN) &&
        !UserIsDesktopWindow(Wnd))
   {
      PWND Child;
 
      for (Child = Wnd->spwndChild; Child; Child = Child->spwndNext)
      {
         /* transparent window, check for non-transparent sibling to paint first, then skip it */
         if ( Child->ExStyle & WS_EX_TRANSPARENT &&
             ( Child->hrgnUpdate != NULL || Child->state & WNDS_INTERNALPAINT ) )
         {
            PWND Next = Child->spwndNext;
            while (Next)
            {
               if ( Next->hrgnUpdate != NULL || Next->state & WNDS_INTERNALPAINT ) break;
 
               Next = Next->spwndNext;
            }
 
            if (Next) continue;
         }
 
         if (Child->style & WS_VISIBLE)
         {
             USER_REFERENCE_ENTRY Ref;
             UserRefObjectCo(Child, &Ref);
             co_IntUpdateWindows(Child, Flags, TRUE);
             UserDerefObjectCo(Child);
         }
      }
   }
}

Referenced by co_IntUpdateWindows(), IntPrintWindow(), MENU_ShowPopup(), NC_DoButton(), NtUserCallHwndLock(), and UserUpdateWindows().

co_UserExcludeUpdateRgn()

INT FASTCALL co_UserExcludeUpdateRgn	(	HDC	hDC,
		PWND	Window
	)

Definition at line 2465 of file painting.c.

{
    POINT pt;
    RECT rc;
 
    if (Window->hrgnUpdate)
    {
        if (Window->hrgnUpdate == HRGN_WINDOW)
        {
            return NtGdiIntersectClipRect(hDC, 0, 0, 0, 0);
        }
        else
        {
            INT ret = ERROR;
            HRGN hrgn = NtGdiCreateRectRgn(0,0,0,0);
 
            if ( hrgn && GreGetDCPoint( hDC, GdiGetDCOrg, &pt) )
            {
                if ( NtGdiGetRandomRgn( hDC, hrgn, CLIPRGN) == NULLREGION )
                {
                    NtGdiOffsetRgn(hrgn, pt.x, pt.y);
                }
                else
                {
                    HRGN hrgnScreen;
                    PMONITOR pm = UserGetPrimaryMonitor();
                    hrgnScreen = NtGdiCreateRectRgn(0,0,0,0);
                    NtGdiCombineRgn(hrgnScreen, hrgnScreen, pm->hrgnMonitor, RGN_OR);
 
                    NtGdiCombineRgn(hrgn, hrgnScreen, NULL, RGN_COPY);
 
                    GreDeleteObject(hrgnScreen);
                }
 
                NtGdiCombineRgn(hrgn, hrgn, Window->hrgnUpdate, RGN_DIFF);
 
                NtGdiOffsetRgn(hrgn, -pt.x, -pt.y);
 
                ret = NtGdiExtSelectClipRgn(hDC, hrgn, RGN_COPY);
 
                GreDeleteObject(hrgn);
            }
            return ret;
        }
    }
    else
    {
        return GdiGetClipBox( hDC, &rc);
    }
}

Referenced by NtUserExcludeUpdateRgn().

co_UserGetUpdateRect()

BOOL FASTCALL co_UserGetUpdateRect	(	PWND	Window,
		PRECT	pRect,
		BOOL	bErase
	)

Definition at line 1862 of file painting.c.

{
   INT RegionType;
   BOOL Ret = TRUE;
 
   if (bErase)
   {
      USER_REFERENCE_ENTRY Ref;
      UserRefObjectCo(Window, &Ref);
      co_IntPaintWindows(Window, RDW_NOCHILDREN, FALSE);
      UserDerefObjectCo(Window);
   }
 
   Window->state &= ~WNDS_UPDATEDIRTY;
 
   if (Window->hrgnUpdate == NULL)
   {
      pRect->left = pRect->top = pRect->right = pRect->bottom = 0;
      Ret = FALSE;
   }
   else
   {
      /* Get the update region bounding box. */
      if (Window->hrgnUpdate == HRGN_WINDOW)
      {
         *pRect = Window->rcClient;
         ERR("GURt: Caller is retrieving Window Region 1\n");
      }
      else
      {
         RegionType = IntGdiGetRgnBox(Window->hrgnUpdate, pRect);
 
         if (RegionType != ERROR && RegionType != NULLREGION)
            RECTL_bIntersectRect(pRect, pRect, &Window->rcClient);
      }
 
      if (IntIntersectWithParents(Window, pRect))
      {
         if (!UserIsDesktopWindow(Window))
         {
            RECTL_vOffsetRect(pRect,
                              -Window->rcClient.left,
                              -Window->rcClient.top);
         }
         if (Window->pcls->style & CS_OWNDC)
         {
            HDC hdc;
            //DWORD layout;
            hdc = UserGetDCEx(Window, NULL, DCX_USESTYLE);
            //layout = NtGdiSetLayout(hdc, -1, 0);
            //IntMapWindowPoints( 0, Window, (LPPOINT)pRect, 2 );
            GreDPtoLP( hdc, (LPPOINT)pRect, 2 );
            //NtGdiSetLayout(hdc, -1, layout);
            UserReleaseDC(Window, hdc, FALSE);
         }
      }
      else
      {
         pRect->left = pRect->top = pRect->right = pRect->bottom = 0;
      }
   }
   return Ret;
}

Referenced by NtUserGetUpdateRect().

co_UserGetUpdateRgn()

INT FASTCALL co_UserGetUpdateRgn	(	PWND	Window,
		HRGN	hRgn,
		BOOL	bErase
	)

Definition at line 1790 of file painting.c.

{
   int RegionType;
   BOOL Type;
   RECTL Rect;
 
   ASSERT_REFS_CO(Window);
 
   if (bErase)
   {
      USER_REFERENCE_ENTRY Ref;
      UserRefObjectCo(Window, &Ref);
      co_IntPaintWindows(Window, RDW_NOCHILDREN, FALSE);
      UserDerefObjectCo(Window);
   }
 
   Window->state &= ~WNDS_UPDATEDIRTY;
 
   if (Window->hrgnUpdate == NULL)
   {
       NtGdiSetRectRgn(hRgn, 0, 0, 0, 0);
       return NULLREGION;
   }
 
   Rect = Window->rcClient;
   Type = IntIntersectWithParents(Window, &Rect);
 
   if (Window->hrgnUpdate == HRGN_WINDOW)
   {
      // Trap it out.
      ERR("GURn: Caller is passing Window Region 1\n");
      if (!Type)
      {
         NtGdiSetRectRgn(hRgn, 0, 0, 0, 0);
         return NULLREGION;
      }
 
      RegionType = SIMPLEREGION;
 
      if (!UserIsDesktopWindow(Window))
      {
         RECTL_vOffsetRect(&Rect,
                          -Window->rcClient.left,
                          -Window->rcClient.top);
      }
      GreSetRectRgnIndirect(hRgn, &Rect);
   }
   else
   {
      HRGN hrgnTemp = GreCreateRectRgnIndirect(&Rect);
 
      RegionType = NtGdiCombineRgn(hRgn, hrgnTemp, Window->hrgnUpdate, RGN_AND);
 
      if (RegionType == ERROR || RegionType == NULLREGION)
      {
         if (hrgnTemp) GreDeleteObject(hrgnTemp);
         NtGdiSetRectRgn(hRgn, 0, 0, 0, 0);
         return RegionType;
      }
 
      if (!UserIsDesktopWindow(Window))
      {
         NtGdiOffsetRgn(hRgn,
                       -Window->rcClient.left,
                       -Window->rcClient.top);
      }
      if (hrgnTemp) GreDeleteObject(hrgnTemp);
   }
   return RegionType;
}

Referenced by IntDefWindowProc(), and NtUserGetUpdateRgn().

co_UserRedrawWindow()

BOOL FASTCALL co_UserRedrawWindow	(	PWND	Window,
		const RECTL *	UpdateRect,
		PREGION	UpdateRgn,
		ULONG	Flags
	)

Definition at line 897 of file painting.c.

{
   PREGION TmpRgn = NULL;
   TRACE("co_UserRedrawWindow start Rgn %p\n",UpdateRgn);
 
   /*
    * Step 1.
    * Validation of passed parameters.
    */
 
   if (!IntIsWindowDrawable(Window))
   {
      return TRUE; // Just do nothing!!!
   }
 
   if (Window == NULL)
   {
      Window = UserGetDesktopWindow();
   }
 
   /*
    * Step 2.
    * Transform the parameters UpdateRgn and UpdateRect into
    * a region hRgn specified in screen coordinates.
    */
 
   if (Flags & (RDW_INVALIDATE | RDW_VALIDATE)) // Both are OKAY!
   {
      /* We can't hold lock on GDI objects while doing roundtrips to user mode,
       * so use a copy instead */
      if (UpdateRgn)
      {
          TmpRgn = IntSysCreateRectpRgn(0, 0, 0, 0);
 
          if (UpdateRgn > PRGN_WINDOW)
          {
             IntGdiCombineRgn(TmpRgn, UpdateRgn, NULL, RGN_COPY);
          }
 
          if (Window != UserGetDesktopWindow())
          {
             REGION_bOffsetRgn(TmpRgn, Window->rcClient.left, Window->rcClient.top);
          }
      }
      else
      {
         if (UpdateRect != NULL)
         {
            if (Window == UserGetDesktopWindow())
            {
               TmpRgn = IntSysCreateRectpRgnIndirect(UpdateRect);
            }
            else
            {
               TmpRgn = IntSysCreateRectpRgn(Window->rcClient.left + UpdateRect->left,
                                             Window->rcClient.top  + UpdateRect->top,
                                             Window->rcClient.left + UpdateRect->right,
                                             Window->rcClient.top  + UpdateRect->bottom);
            }
         }
         else
         {
            if ((Flags & (RDW_INVALIDATE | RDW_FRAME)) == (RDW_INVALIDATE | RDW_FRAME) ||
                (Flags & (RDW_VALIDATE | RDW_NOFRAME)) == (RDW_VALIDATE | RDW_NOFRAME))
            {
               if (!RECTL_bIsEmptyRect(&Window->rcWindow))
                   TmpRgn = IntSysCreateRectpRgnIndirect(&Window->rcWindow);
            }
            else
            {
               if (!RECTL_bIsEmptyRect(&Window->rcClient))
                   TmpRgn = IntSysCreateRectpRgnIndirect(&Window->rcClient);
            }
         }
      }
   }
 
   /* Fixes test RDW_INTERNALPAINT behavior */
   if (TmpRgn == NULL)
   {
      TmpRgn = PRGN_WINDOW; // Need a region so the bits can be set!!!
   }
 
   /*
    * Step 3.
    * Adjust the window update region depending on hRgn and flags.
    */
 
   if (Flags & (RDW_INVALIDATE | RDW_VALIDATE | RDW_INTERNALPAINT | RDW_NOINTERNALPAINT) &&
       TmpRgn != NULL)
   {
      IntInvalidateWindows(Window, TmpRgn, Flags);
   }
 
   /*
    * Step 4.
    * Repaint and erase windows if needed.
    */
 
   if (Flags & RDW_UPDATENOW)
   {
      UserUpdateWindows(Window, Flags);
   }
   else if (Flags & RDW_ERASENOW)
   {
      if ((Flags & (RDW_NOCHILDREN|RDW_ALLCHILDREN)) == 0)
         Flags |= RDW_CLIPCHILDREN;
 
      UserSyncAndPaintWindows(Window, Flags);
   }
 
   /*
    * Step 5.
    * Cleanup ;-)
    */
 
   if (TmpRgn > PRGN_WINDOW)
   {
      REGION_Delete(TmpRgn);
   }
   TRACE("co_UserRedrawWindow exit\n");
 
   return TRUE;
}

Referenced by co_IntSetScrollInfo(), co_IntShowDesktop(), co_UserFreeWindow(), co_VIS_WindowLayoutChanged(), co_WinPosMinMaximize(), co_WinPosSetWindowPos(), DefWndDoSizeMove(), DesktopWindowProc(), IntDefWindowProc(), IntForceMinimizeWindow(), IntScrollWindowEx(), IntSetLayeredWindowAttributes(), NtGdiUpdateColors(), NtUserCallHwndParamLock(), and NtUserRedrawWindow().

DBG_DEFAULT_CHANNEL()

DBG_DEFAULT_CHANNEL

(

UserPainting

)

IntBeginPaint()

HDC FASTCALL IntBeginPaint	(	PWND	Window,
		PPAINTSTRUCT	Ps
	)

Definition at line 1443 of file painting.c.

{
   RECT Rect;
   INT type;
   BOOL Erase = FALSE;
 
   co_UserHideCaret(Window);
 
   Window->state2 |= WNDS2_STARTPAINT;
   Window->state &= ~WNDS_PAINTNOTPROCESSED;
 
   if (Window->state & WNDS_SENDNCPAINT)
   {
      HRGN hRgn;
      // Application can keep update dirty.
      do
      {
         Window->state &= ~WNDS_UPDATEDIRTY;
         hRgn = IntGetNCUpdateRgn(Window, FALSE);
         IntSendNCPaint(Window, hRgn);
         if (hRgn > HRGN_WINDOW && GreIsHandleValid(hRgn))
         {
            /* NOTE: The region can already be deleted! */
            GreDeleteObject(hRgn);
         }
      }
      while(Window->state & WNDS_UPDATEDIRTY);
   }
   else
   {
      Window->state &= ~WNDS_UPDATEDIRTY;
   }
 
   RtlZeroMemory(Ps, sizeof(PAINTSTRUCT));
 
   if (Window->state2 & WNDS2_ENDPAINTINVALIDATE)
   {
      ERR("BP: Another thread invalidated this window\n");
   }
 
   Ps->hdc = UserGetDCEx( Window,
                          Window->hrgnUpdate,
                          DCX_INTERSECTRGN | DCX_USESTYLE);
   if (!Ps->hdc)
   {
      return NULL;
   }
 
   // If set, always clear flags out due to the conditions later on for sending the message.
   if (Window->state & WNDS_SENDERASEBACKGROUND)
   {
      Window->state &= ~(WNDS_SENDERASEBACKGROUND|WNDS_ERASEBACKGROUND);
      Erase = TRUE;
   }
 
   if (Window->hrgnUpdate != NULL)
   {
      MsqDecPaintCountQueue(Window->head.pti);
      IntGdiSetRegionOwner(Window->hrgnUpdate, GDI_OBJ_HMGR_POWNED);
      /* The region is part of the dc now and belongs to the process! */
      Window->hrgnUpdate = NULL;
   }
   else
   {
      if (Window->state & WNDS_INTERNALPAINT)
         MsqDecPaintCountQueue(Window->head.pti);
   }
 
   type = GdiGetClipBox(Ps->hdc, &Ps->rcPaint);
 
   IntGetClientRect(Window, &Rect);
 
   Window->state &= ~WNDS_INTERNALPAINT;
 
   if ( Erase &&               // Set to erase,
        type != NULLREGION &&  // don't erase if the clip box is empty,
        (!(Window->pcls->style & CS_PARENTDC) || // not parent dc or
         RECTL_bIntersectRect( &Rect, &Rect, &Ps->rcPaint) ) ) // intersecting.
   {
      Ps->fErase = !co_IntSendMessage(UserHMGetHandle(Window), WM_ERASEBKGND, (WPARAM)Ps->hdc, 0);
      if ( Ps->fErase )
      {
         Window->state |= (WNDS_SENDERASEBACKGROUND|WNDS_ERASEBACKGROUND);
      }
   }
   else
   {
      Ps->fErase = FALSE;
   }
 
   IntSendChildNCPaint(Window);
 
   return Ps->hdc;
}

Referenced by DesktopWindowProc(), IntDefWindowProc(), NtUserBeginPaint(), and PopupMenuWndProc().

IntCalcWindowRgn()

HRGN FASTCALL IntCalcWindowRgn	(	PWND	Wnd,
		BOOL	Client
	)

Definition at line 209 of file painting.c.

{
   HRGN hRgnWindow;
 
   if (Client)
   {
      hRgnWindow = NtGdiCreateRectRgn(
          Wnd->rcClient.left,
          Wnd->rcClient.top,
          Wnd->rcClient.right,
          Wnd->rcClient.bottom);
   }
   else
   {
      hRgnWindow = NtGdiCreateRectRgn(
          Wnd->rcWindow.left,
          Wnd->rcWindow.top,
          Wnd->rcWindow.right,
          Wnd->rcWindow.bottom);
   }
 
   if (Wnd->hrgnClip != NULL && !(Wnd->style & WS_MINIMIZE))
   {
      NtGdiOffsetRgn(hRgnWindow,
         -Wnd->rcWindow.left,
         -Wnd->rcWindow.top);
      NtGdiCombineRgn(hRgnWindow, hRgnWindow, Wnd->hrgnClip, RGN_AND);
      NtGdiOffsetRgn(hRgnWindow,
         Wnd->rcWindow.left,
         Wnd->rcWindow.top);
   }
 
   return hRgnWindow;
}

Referenced by IntGetNCUpdateRgn().

IntEndPaint()

BOOL FASTCALL IntEndPaint	(	PWND	Wnd,
		PPAINTSTRUCT	Ps
	)

Definition at line 1539 of file painting.c.

{
   HDC hdc = NULL;
 
   hdc = Ps->hdc;
 
   UserReleaseDC(Wnd, hdc, TRUE);
 
   if (Wnd->state2 & WNDS2_ENDPAINTINVALIDATE)
   {
      ERR("EP: Another thread invalidated this window\n");
      Wnd->state2 &= ~WNDS2_ENDPAINTINVALIDATE;
   }
 
   Wnd->state2 &= ~(WNDS2_WMPAINTSENT|WNDS2_STARTPAINT);
 
   co_UserShowCaret(Wnd);
 
   return TRUE;
}

Referenced by DesktopWindowProc(), IntDefWindowProc(), NtUserEndPaint(), and PopupMenuWndProc().

IntFillWindow()

BOOL FASTCALL IntFillWindow	(	PWND	pWndParent,
		PWND	pWnd,
		HDC	hDC,
		HBRUSH	hBrush
	)

Definition at line 1561 of file painting.c.

{
   RECT Rect, Rect1;
   INT type;
 
   if (!pWndParent)
      pWndParent = pWnd;
 
   type = GdiGetClipBox(hDC, &Rect);
 
   IntGetClientRect(pWnd, &Rect1);
 
   if ( type != NULLREGION && // Clip box is not empty,
       (!(pWnd->pcls->style & CS_PARENTDC) || // not parent dc or
         RECTL_bIntersectRect( &Rect, &Rect, &Rect1) ) ) // intersecting.
   {
      POINT ppt;
      INT x = 0, y = 0;
 
      if (!UserIsDesktopWindow(pWndParent))
      {
          x = pWndParent->rcClient.left - pWnd->rcClient.left;
          y = pWndParent->rcClient.top  - pWnd->rcClient.top;
      }
 
      GreSetBrushOrg(hDC, x, y, &ppt);
 
      if ( hBrush < (HBRUSH)CTLCOLOR_MAX )
          hBrush = GetControlColor( pWndParent, pWnd, hDC, HandleToUlong(hBrush) + WM_CTLCOLORMSGBOX);
 
      FillRect(hDC, &Rect, hBrush);
 
      GreSetBrushOrg(hDC, ppt.x, ppt.y, NULL);
 
      return TRUE;
   }
   else
      return FALSE;
}

Referenced by NtUserFillWindow().

IntFindWindowToRepaint()

PWND FASTCALL IntFindWindowToRepaint	(	PWND	Window,
		PTHREADINFO	Thread
	)

Definition at line 1143 of file painting.c.

{
   PWND hChild;
   PWND TempWindow;
 
   for (; Window != NULL; Window = Window->spwndNext)
   {
      if (IntWndBelongsToThread(Window, Thread))
      {
         if (IntIsWindowDirty(Window))
         {
            /* Make sure all non-transparent siblings are already drawn. */
            if (Window->ExStyle & WS_EX_TRANSPARENT)
            {
               for (TempWindow = Window->spwndNext; TempWindow != NULL;
                    TempWindow = TempWindow->spwndNext)
               {
                  if (!(TempWindow->ExStyle & WS_EX_TRANSPARENT) &&
                       IntWndBelongsToThread(TempWindow, Thread) &&
                       IntIsWindowDirty(TempWindow))
                  {
                     return TempWindow;
                  }
               }
            }
            return Window;
         }
      }
      /* find a child of the specified window that needs repainting */
      if (Window->spwndChild)
      {
         hChild = IntFindWindowToRepaint(Window->spwndChild, Thread);
         if (hChild != NULL)
            return hChild;
      }
   }
   return Window;
}

Referenced by IntFindWindowToRepaint(), and IntGetPaintMessage().

IntFlashWindowEx()

BOOL FASTCALL IntFlashWindowEx	(	PWND	pWnd,
		PFLASHWINFO	pfwi
	)

Definition at line 1313 of file painting.c.

{
   DWORD_PTR FlashState;
   UINT uCount = pfwi->uCount;
   BOOL Activate = FALSE, Ret = FALSE;
 
   ASSERT(pfwi);
 
   FlashState = (DWORD_PTR)UserGetProp(pWnd, AtomFlashWndState, TRUE);
 
   if (FlashState == FLASHW_FINISHED)
   {
      // Cycle has finished, kill timer and set this to Stop.
      FlashState |= FLASHW_KILLSYSTIMER;
      pfwi->dwFlags = FLASHW_STOP;
   }
   else
   {
      if (FlashState)
      {
         if (pfwi->dwFlags == FLASHW_SYSTIMER)
         {
             // Called from system timer, restore flags, counts and state.
             pfwi->dwFlags = LOWORD(FlashState);
             uCount = HIWORD(FlashState);
             FlashState = MAKELONG(LOWORD(FlashState),0);
         }
         else
         {
             // Clean out the trash! Fix SeaMonkey crash after restart.
             FlashState = 0;
         }
      }
 
      if (FlashState == 0)
      {  // First time in cycle, setup flash state.
         if ( pWnd->state & WNDS_ACTIVEFRAME ||
             (pfwi->dwFlags & FLASHW_CAPTION && pWnd->style & (WS_BORDER|WS_DLGFRAME)))
         {
             FlashState = FLASHW_STARTED|FLASHW_ACTIVE;
         }
      }
 
      // Set previous window state.
      Ret = !!(FlashState & FLASHW_ACTIVE);
 
      if ( (pfwi->dwFlags & FLASHW_TIMERNOFG) == FLASHW_TIMERNOFG &&
           gpqForeground == pWnd->head.pti->MessageQueue )
      {
          // Flashing until foreground, set this to Stop.
          pfwi->dwFlags = FLASHW_STOP;
      }
   }
 
   // Toggle activate flag.
   if ( pfwi->dwFlags == FLASHW_STOP )
   {
      if (gpqForeground && gpqForeground->spwndActive == pWnd)
         Activate = TRUE;
      else
         Activate = FALSE;
   }
   else
   {
      Activate = (FlashState & FLASHW_ACTIVE) == 0;
   }
 
   if ( pfwi->dwFlags == FLASHW_STOP || pfwi->dwFlags & FLASHW_CAPTION )
   {
      co_IntSendMessage(UserHMGetHandle(pWnd), WM_NCACTIVATE, Activate, 0);
   }
 
   // FIXME: Check for a Stop Sign here.
   if ( pfwi->dwFlags & FLASHW_TRAY )
   {
      // Need some shell work here too.
      TRACE("FIXME: Flash window no Tray support!\n");
   }
 
   if ( pfwi->dwFlags == FLASHW_STOP )
   {
      if (FlashState & FLASHW_KILLSYSTIMER)
      {
         IntKillTimer(pWnd, ID_EVENT_SYSTIMER_FLASHWIN, TRUE);
      }
 
      UserRemoveProp(pWnd, AtomFlashWndState, TRUE);
   }
   else
   {  // Have a count and started, set timer.
      if ( uCount )
      {
         FlashState |= FLASHW_COUNT;
 
         if (!(Activate ^ !!(FlashState & FLASHW_STARTED)))
             uCount--;
 
         if (!(FlashState & FLASHW_KILLSYSTIMER))
             pfwi->dwFlags |= FLASHW_TIMER;
      }
 
      if (pfwi->dwFlags & FLASHW_TIMER)
      {
         FlashState |= FLASHW_KILLSYSTIMER;
 
         IntSetTimer( pWnd,
                      ID_EVENT_SYSTIMER_FLASHWIN,
                      pfwi->dwTimeout ? pfwi->dwTimeout : gpsi->dtCaretBlink,
                      SystemTimerProc,
                      TMRF_SYSTEM );
      }
 
      if (FlashState & FLASHW_COUNT && uCount == 0)
      {
         // Keep spinning? Nothing else to do.
         FlashState = FLASHW_FINISHED;
      }
      else
      {
         // Save state and flags so this can be restored next time through.
         FlashState ^= (FlashState ^ -!!(Activate)) & FLASHW_ACTIVE;
         FlashState ^= (FlashState ^ pfwi->dwFlags) & (FLASHW_MASK & ~FLASHW_TIMER);
      }
      FlashState = MAKELONG(LOWORD(FlashState),uCount);
      UserSetProp(pWnd, AtomFlashWndState, (HANDLE)FlashState, TRUE);
   }
   return Ret;
}

Referenced by DefWndHandleSetCursor(), NtUserFlashWindowEx(), and SystemTimerProc().

IntGetNCUpdateRgn()

HRGN FASTCALL IntGetNCUpdateRgn	(	PWND	Window,
		BOOL	Validate
	)

Definition at line 260 of file painting.c.

{
   HRGN hRgnNonClient;
   HRGN hRgnWindow;
   UINT RgnType, NcType;
   RECT update;
 
   if (Window->hrgnUpdate != NULL &&
       Window->hrgnUpdate != HRGN_WINDOW)
   {
      hRgnNonClient = IntCalcWindowRgn(Window, FALSE);
 
      /*
       * If region creation fails it's safe to fallback to whole
       * window region.
       */
      if (hRgnNonClient == NULL)
      {
         return HRGN_WINDOW;
      }
 
      hRgnWindow = IntCalcWindowRgn(Window, TRUE);
      if (hRgnWindow == NULL)
      {
         GreDeleteObject(hRgnNonClient);
         return HRGN_WINDOW;
      }
 
      NcType = IntGdiGetRgnBox(Window->hrgnUpdate, &update);
 
      RgnType = NtGdiCombineRgn(hRgnNonClient, hRgnNonClient, hRgnWindow, RGN_DIFF);
      if ((RgnType != ERROR) && (RgnType != NULLREGION))
         RgnType = NtGdiCombineRgn(hRgnNonClient, hRgnNonClient, Window->hrgnUpdate, RGN_AND);
 
      if (RgnType == ERROR)
      {
         GreDeleteObject(hRgnWindow);
         GreDeleteObject(hRgnNonClient);
         return HRGN_WINDOW;
      }
      else if (RgnType == NULLREGION)
      {
         GreDeleteObject(hRgnWindow);
         GreDeleteObject(hRgnNonClient);
         Window->state &= ~WNDS_UPDATEDIRTY;
         return NULL;
      }
 
      /*
       * Remove the nonclient region from the standard update region if
       * we were asked for it.
       */
 
      if (Validate)
      {
         if (NtGdiCombineRgn(Window->hrgnUpdate, Window->hrgnUpdate, hRgnWindow, RGN_AND) == NULLREGION)
         {
            IntGdiSetRegionOwner(Window->hrgnUpdate, GDI_OBJ_HMGR_POWNED);
            GreDeleteObject(Window->hrgnUpdate);
            Window->state &= ~WNDS_UPDATEDIRTY;
            Window->hrgnUpdate = NULL;
            if (!(Window->state & WNDS_INTERNALPAINT))
               MsqDecPaintCountQueue(Window->head.pti);
         }
      }
 
      /* check if update rgn contains complete nonclient area */
      if (NcType == SIMPLEREGION)
      {
         RECT window;
         IntGetWindowRect( Window, &window );
 
         if (IntEqualRect( &window, &update ))
         {
            GreDeleteObject(hRgnNonClient);
            hRgnNonClient = HRGN_WINDOW;
         }
      }
 
      GreDeleteObject(hRgnWindow);
 
      return hRgnNonClient;
   }
   else
   {
      return Window->hrgnUpdate;
   }
}

Referenced by co_IntPaintWindows(), and IntBeginPaint().

IntGetPaintMessage()

BOOL FASTCALL IntGetPaintMessage	(	PWND	Window,
		UINT	MsgFilterMin,
		UINT	MsgFilterMax,
		PTHREADINFO	Thread,
		MSG *	Message,
		BOOL	Remove
	)

Definition at line 1193 of file painting.c.

{
   PWND PaintWnd, StartWnd;
 
   if ((MsgFilterMin != 0 || MsgFilterMax != 0) &&
         (MsgFilterMin > WM_PAINT || MsgFilterMax < WM_PAINT))
      return FALSE;
 
   if (Thread->TIF_flags & TIF_SYSTEMTHREAD )
   {
      ERR("WM_PAINT is in a System Thread!\n");
   }
 
   StartWnd = UserGetDesktopWindow();
   PaintWnd = IntFindWindowToRepaint(StartWnd, Thread);
 
   Message->hwnd = PaintWnd ? UserHMGetHandle(PaintWnd) : NULL;
 
   if (Message->hwnd == NULL && Thread->cPaintsReady)
   {
      // Find note in window.c:"PAINTING BUG".
      ERR("WARNING SOMETHING HAS GONE WRONG: Thread marked as containing dirty windows, but no dirty windows found! Counts %u\n",Thread->cPaintsReady);
      /* Hack to stop spamming the debug log ! */
      Thread->cPaintsReady = 0;
      return FALSE;
   }
 
   if (Message->hwnd == NULL)
      return FALSE;
 
   if (!(Window == NULL ||
         PaintWnd == Window ||
         IntIsChildWindow(Window, PaintWnd))) /* check that it is a child of the specified parent */
      return FALSE;
 
   if (PaintWnd->state & WNDS_INTERNALPAINT)
   {
      PaintWnd->state &= ~WNDS_INTERNALPAINT;
      if (!PaintWnd->hrgnUpdate)
         MsqDecPaintCountQueue(Thread);
   }
   PaintWnd->state2 &= ~WNDS2_STARTPAINT;
   PaintWnd->state &= ~WNDS_UPDATEDIRTY;
 
   Window = PaintWnd;
   while (Window && !UserIsDesktopWindow(Window))
   {
      // Role back and check for clip children, do not set if any.
      if (Window->spwndParent && !(Window->spwndParent->style & WS_CLIPCHILDREN))
      {
         PaintWnd->state2 |= WNDS2_WMPAINTSENT;
      }
      Window = Window->spwndParent;
   }
 
   Message->wParam = Message->lParam = 0;
   Message->message = WM_PAINT;
   return TRUE;
}

Referenced by co_IntPeekMessage().

IntIntersectWithParents()

BOOL FASTCALL IntIntersectWithParents	(	PWND	Child,
		RECTL *	WindowRect
	)

Definition at line 35 of file painting.c.

{
   PWND ParentWnd;
 
   if (Child->ExStyle & WS_EX_REDIRECTED)
      return TRUE;
 
   ParentWnd = Child->spwndParent;
   while (ParentWnd != NULL)
   {
      if (!(ParentWnd->style & WS_VISIBLE)  ||
           (ParentWnd->style & WS_MINIMIZE) ||
          !RECTL_bIntersectRect(WindowRect, WindowRect, &ParentWnd->rcClient) )
      {
         return FALSE;
      }
 
      if (ParentWnd->ExStyle & WS_EX_REDIRECTED)
         return TRUE;
 
      ParentWnd = ParentWnd->spwndParent;
   }
 
   return TRUE;
}

Referenced by co_IntGetUpdateRgn(), co_UserGetUpdateRect(), co_UserGetUpdateRgn(), and IntValidateParents().

IntInvalidateWindows()

VOID FASTCALL IntInvalidateWindows	(	PWND	Wnd,
		PREGION	Rgn,
		ULONG	Flags
	)

Definition at line 645 of file painting.c.

{
   INT RgnType = NULLREGION;
   BOOL HadPaintMessage;
 
   TRACE("IntInvalidateWindows start Rgn %p\n",Rgn);
 
   if ( Rgn > PRGN_WINDOW )
   {
      /*
       * If the nonclient is not to be redrawn, clip the region to the client
       * rect
       */
      if ((Flags & RDW_INVALIDATE) != 0 && (Flags & RDW_FRAME) == 0)
      {
         PREGION RgnClient;
 
         RgnClient = IntSysCreateRectpRgnIndirect(&Wnd->rcClient);
         if (RgnClient)
         {
             RgnType = IntGdiCombineRgn(Rgn, Rgn, RgnClient, RGN_AND);
             REGION_Delete(RgnClient);
         }
      }
 
      /*
       * Clip the given region with window rectangle (or region)
       */
 
      if (!Wnd->hrgnClip || (Wnd->style & WS_MINIMIZE))
      {
         PREGION RgnWindow = IntSysCreateRectpRgnIndirect(&Wnd->rcWindow);
         if (RgnWindow)
         {
             RgnType = IntGdiCombineRgn(Rgn, Rgn, RgnWindow, RGN_AND);
             REGION_Delete(RgnWindow);
         }
      }
      else
      {
          PREGION RgnClip = REGION_LockRgn(Wnd->hrgnClip);
          if (RgnClip)
          {
              REGION_bOffsetRgn(Rgn,
                                -Wnd->rcWindow.left,
                                -Wnd->rcWindow.top);
              RgnType = IntGdiCombineRgn(Rgn, Rgn, RgnClip, RGN_AND);
              REGION_bOffsetRgn(Rgn,
                                Wnd->rcWindow.left,
                                Wnd->rcWindow.top);
              REGION_UnlockRgn(RgnClip);
          }
      }
   }
   else
   {
      RgnType = NULLREGION;
   }
 
   /* Nothing to paint, just return */
   if ((RgnType == NULLREGION && (Flags & RDW_INVALIDATE)) || RgnType == ERROR)
   {
      return;
   }
 
   /*
    * Save current state of pending updates
    */
 
   HadPaintMessage = IntIsWindowDirty(Wnd);
 
   /*
    * Update the region and flags
    */
 
   // The following flags are used to invalidate the window.
   if (Flags & (RDW_INVALIDATE|RDW_INTERNALPAINT|RDW_ERASE|RDW_FRAME))
   {
      if (Flags & RDW_INTERNALPAINT)
      {
         Wnd->state |= WNDS_INTERNALPAINT;
      }
 
      if (Flags & RDW_INVALIDATE )
      {
         PREGION RgnUpdate;
 
         Wnd->state &= ~WNDS_NONCPAINT;
 
         /* If not the same thread set it dirty. */
         if (Wnd->head.pti != PsGetCurrentThreadWin32Thread())
         {
            Wnd->state |= WNDS_UPDATEDIRTY;
            if (Wnd->state2 & WNDS2_WMPAINTSENT)
               Wnd->state2 |= WNDS2_ENDPAINTINVALIDATE;
         }
 
         if (Flags & RDW_FRAME)
            Wnd->state |= WNDS_SENDNCPAINT;
 
         if (Flags & RDW_ERASE)
            Wnd->state |= WNDS_SENDERASEBACKGROUND;
 
         if (RgnType != NULLREGION && Rgn > PRGN_WINDOW)
         {
            if (Wnd->hrgnUpdate == NULL)
            {
               Wnd->hrgnUpdate = NtGdiCreateRectRgn(0, 0, 0, 0);
               IntGdiSetRegionOwner(Wnd->hrgnUpdate, GDI_OBJ_HMGR_PUBLIC);
            }
 
            if (Wnd->hrgnUpdate != HRGN_WINDOW)
            {
               RgnUpdate = REGION_LockRgn(Wnd->hrgnUpdate);
               if (RgnUpdate)
               {
                  RgnType = IntGdiCombineRgn(RgnUpdate, RgnUpdate, Rgn, RGN_OR);
                  REGION_UnlockRgn(RgnUpdate);
                  if (RgnType == NULLREGION)
                  {
                     IntGdiSetRegionOwner(Wnd->hrgnUpdate, GDI_OBJ_HMGR_POWNED);
                     GreDeleteObject(Wnd->hrgnUpdate);
                     Wnd->hrgnUpdate = NULL;
                  }
               }
            }
         }
 
         Flags |= RDW_ERASE|RDW_FRAME; // For children.
 
      }
 
      if (!HadPaintMessage && IntIsWindowDirty(Wnd))
      {
         MsqIncPaintCountQueue(Wnd->head.pti);
      }
 
   }    // The following flags are used to validate the window.
   else if (Flags & (RDW_VALIDATE|RDW_NOINTERNALPAINT|RDW_NOERASE|RDW_NOFRAME))
   {
      if (Wnd->state & WNDS_UPDATEDIRTY && !(Flags & RDW_NOUPDATEDIRTY))
         return;
 
      if (Flags & RDW_NOINTERNALPAINT)
      {
         Wnd->state &= ~WNDS_INTERNALPAINT;
      }
 
      if (Flags & RDW_VALIDATE)
      {
         if (Flags & RDW_NOFRAME)
            Wnd->state &= ~WNDS_SENDNCPAINT;
 
         if (Flags & RDW_NOERASE)
            Wnd->state &= ~(WNDS_SENDERASEBACKGROUND|WNDS_ERASEBACKGROUND);
 
         if (Wnd->hrgnUpdate > HRGN_WINDOW && RgnType != NULLREGION && Rgn > PRGN_WINDOW)
         {
             PREGION RgnUpdate = REGION_LockRgn(Wnd->hrgnUpdate);
 
             if (RgnUpdate)
             {
                 RgnType = IntGdiCombineRgn(RgnUpdate, RgnUpdate, Rgn, RGN_DIFF);
                 REGION_UnlockRgn(RgnUpdate);
 
                 if (RgnType == NULLREGION)
                 {
                     IntGdiSetRegionOwner(Wnd->hrgnUpdate, GDI_OBJ_HMGR_POWNED);
                     GreDeleteObject(Wnd->hrgnUpdate);
                     Wnd->hrgnUpdate = NULL;
                 }
             }
         }
         // If update is null, do not erase.
         if (Wnd->hrgnUpdate == NULL)
         {
            Wnd->state &= ~(WNDS_SENDERASEBACKGROUND|WNDS_ERASEBACKGROUND);
         }
      }
 
      if (HadPaintMessage && !IntIsWindowDirty(Wnd))
      {
         MsqDecPaintCountQueue(Wnd->head.pti);
      }
   }
 
   /*
    * Process children if needed
    */
 
   if (!(Flags & RDW_NOCHILDREN) &&
       !(Wnd->style & WS_MINIMIZE) &&
         ((Flags & RDW_ALLCHILDREN) || !(Wnd->style & WS_CLIPCHILDREN)))
   {
      PWND Child;
 
      for (Child = Wnd->spwndChild; Child; Child = Child->spwndNext)
      {
         if (Child->style & WS_VISIBLE)
         {
            /*
             * Recursive call to update children hrgnUpdate
             */
            PREGION RgnTemp = IntSysCreateRectpRgn(0, 0, 0, 0);
            if (RgnTemp)
            {
                if (Rgn > PRGN_WINDOW) IntGdiCombineRgn(RgnTemp, Rgn, 0, RGN_COPY);
                IntInvalidateWindows(Child, ((Rgn > PRGN_WINDOW)?RgnTemp:Rgn), Flags);
                REGION_Delete(RgnTemp);
            }
         }
      }
   }
   TRACE("IntInvalidateWindows exit\n");
}

Referenced by co_UserRedrawWindow(), co_WinPosSetWindowPos(), IntInvalidateWindows(), IntValidateParent(), IntValidateParents(), PaintSuspendedWindow(), and UserRedrawDesktop().

IntIsWindowDirty()

BOOL FASTCALL IntIsWindowDirty

(

PWND

Wnd

)

Definition at line 1127 of file painting.c.

{
   return ( Wnd->style & WS_VISIBLE &&
           ( Wnd->hrgnUpdate != NULL ||
             Wnd->state & WNDS_INTERNALPAINT ) );
}

Referenced by IntFindWindowToRepaint(), and IntInvalidateWindows().

IntIsWindowDrawable()

BOOL FASTCALL IntIsWindowDrawable

(

PWND

Wnd

)

Definition at line 870 of file painting.c.

{
   PWND WndObject;
 
   for (WndObject = Wnd; WndObject != NULL; WndObject = WndObject->spwndParent)
   {
      if ( WndObject->state2 & WNDS2_INDESTROY ||
           WndObject->state & WNDS_DESTROYED ||
           !WndObject ||
           !(WndObject->style & WS_VISIBLE) ||
            ((WndObject->style & WS_MINIMIZE) && (WndObject != Wnd)))
      {
         return FALSE;
      }
   }
 
   return TRUE;
}

Referenced by co_UserRedrawWindow(), IntScrollWindowEx(), and NtUserScrollWindowEx().

IntPaintWindow()

VOID FASTCALL IntPaintWindow

(

PWND

Window

)

Definition at line 1186 of file painting.c.

{
   // Handle normal painting.
   co_IntPaintWindows( Window, RDW_NOCHILDREN, FALSE );
}

Referenced by IntDispatchMessage().

IntPrintWindow()

BOOL FASTCALL IntPrintWindow	(	PWND	pwnd,
		HDC	hdcBlt,
		UINT	nFlags
	)

Definition at line 1261 of file painting.c.

{
    HDC hdcSrc;
    INT cx, cy, xSrc, ySrc;
 
    if ( nFlags & PW_CLIENTONLY)
    {
       cx = pwnd->rcClient.right - pwnd->rcClient.left;
       cy = pwnd->rcClient.bottom - pwnd->rcClient.top;
       xSrc = pwnd->rcClient.left - pwnd->rcWindow.left;
       ySrc = pwnd->rcClient.top - pwnd->rcWindow.top;
    }
    else
    {
       cx = pwnd->rcWindow.right - pwnd->rcWindow.left;
       cy = pwnd->rcWindow.bottom - pwnd->rcWindow.top;
       xSrc = 0;
       ySrc = 0;
    }
 
    // TODO: Setup Redirection for Print.
    return FALSE;
 
    /* Update the window just incase. */
    co_IntUpdateWindows( pwnd, RDW_ALLCHILDREN, FALSE);
 
    hdcSrc = UserGetDCEx( pwnd, NULL, DCX_CACHE|DCX_WINDOW);
    /* Print window to printer context. */
    NtGdiBitBlt( hdcBlt,
                 0,
                 0,
                 cx,
                 cy,
                 hdcSrc,
                 xSrc,
                 ySrc,
                 SRCCOPY,
                 CLR_INVALID,
                 0);
 
    UserReleaseDC( pwnd, hdcSrc, FALSE);
 
    // TODO: Release Redirection from Print.
 
    return TRUE;
}

Referenced by NtUserPrintWindow().

IntSendChildNCPaint()

VOID FASTCALL IntSendChildNCPaint

(

PWND

pWnd

)

Definition at line 372 of file painting.c.

{
    pWnd = pWnd->spwndChild;
    while (pWnd)
    {
        if ((pWnd->hrgnUpdate == NULL) && (pWnd->state & WNDS_SENDNCPAINT))
        {
            PWND Next;
            USER_REFERENCE_ENTRY Ref;
 
            /* Reference, IntSendNCPaint leaves win32k */
            UserRefObjectCo(pWnd, &Ref);
            IntSendNCPaint(pWnd, HRGN_WINDOW);
 
            /* Make sure to grab next one before dereferencing/freeing */
            Next = pWnd->spwndNext;
            UserDerefObjectCo(pWnd);
            pWnd = Next;
        }
        else
        {
            pWnd = pWnd->spwndNext;
        }
    }
}

Referenced by IntBeginPaint().

IntSendNCPaint()

VOID FASTCALL IntSendNCPaint	(	PWND	pWnd,
		HRGN	hRgn
	)

Definition at line 350 of file painting.c.

{
   pWnd->state &= ~WNDS_SENDNCPAINT;
 
   if ( pWnd == GetW32ThreadInfo()->MessageQueue->spwndActive &&
       !(pWnd->state & WNDS_ACTIVEFRAME))
   {
      pWnd->state |= WNDS_ACTIVEFRAME;
      pWnd->state &= ~WNDS_NONCPAINT;
      hRgn = HRGN_WINDOW;
   }
 
   if (pWnd->state2 & WNDS2_FORCEFULLNCPAINTCLIPRGN)
   {
      pWnd->state2 &= ~WNDS2_FORCEFULLNCPAINTCLIPRGN;
      hRgn = HRGN_WINDOW;
   }
 
   if (hRgn) co_IntSendMessage(UserHMGetHandle(pWnd), WM_NCPAINT, (WPARAM)hRgn, 0);
}

Referenced by co_IntPaintWindows(), co_WinPosSetWindowPos(), ForceNCPaintErase(), IntBeginPaint(), and IntSendChildNCPaint().

IntSendSyncPaint()

VOID FASTCALL IntSendSyncPaint	(	PWND	Wnd,
		ULONG	Flags
	)

Definition at line 132 of file painting.c.

{
   PTHREADINFO ptiCur, ptiWnd;
   PUSER_SENT_MESSAGE Message;
   PLIST_ENTRY Entry;
   BOOL bSend = TRUE;
 
   ptiWnd = Wnd->head.pti;
   ptiCur = PsGetCurrentThreadWin32Thread();
   /*
      Not the current thread, Wnd is in send Nonclient paint also in send erase background and it is visiable.
   */
   if ( Wnd->head.pti != ptiCur &&
        Wnd->state & WNDS_SENDNCPAINT &&
        Wnd->state & WNDS_SENDERASEBACKGROUND &&
        Wnd->style & WS_VISIBLE)
   {
      // For testing, if you see this, break out the Champagne and have a party!
      TRACE("SendSyncPaint Wnd in State!\n");
      if (!IsListEmpty(&ptiWnd->SentMessagesListHead))
      {
         // Scan sent queue messages to see if we received sync paint messages.
         Entry = ptiWnd->SentMessagesListHead.Flink;
         Message = CONTAINING_RECORD(Entry, USER_SENT_MESSAGE, ListEntry);
         do
         {
            TRACE("LOOP it\n");
            if (Message->Msg.message == WM_SYNCPAINT &&
                Message->Msg.hwnd == UserHMGetHandle(Wnd))
            {  // Already received so exit out.
                ERR("SendSyncPaint Found one in the Sent Msg Queue!\n");
                bSend = FALSE;
                break;
            }
            Entry = Message->ListEntry.Flink;
            Message = CONTAINING_RECORD(Entry, USER_SENT_MESSAGE, ListEntry);
         }
         while (Entry != &ptiWnd->SentMessagesListHead);
      }
      if (bSend)
      {
         TRACE("Sending WM_SYNCPAINT\n");
         // This message has no parameters. But it does! Pass Flags along.
         co_IntSendMessageNoWait(UserHMGetHandle(Wnd), WM_SYNCPAINT, Flags, 0);
         Wnd->state |= WNDS_SYNCPAINTPENDING;
      }
   }
 
   // Send to all the children if this is the desktop window.
   if (UserIsDesktopWindow(Wnd))
   {
      if ( Flags & RDW_ALLCHILDREN ||
          ( !(Flags & RDW_NOCHILDREN) && Wnd->style & WS_CLIPCHILDREN))
      {
         PWND spwndChild = Wnd->spwndChild;
         while(spwndChild)
         {
            if ( spwndChild->style & WS_CHILD &&
                 spwndChild->head.pti != ptiCur)
            {
               spwndChild = spwndChild->spwndNext;
               continue;
            }
            IntSendSyncPaint( spwndChild, Flags );
            spwndChild = spwndChild->spwndNext;
         }
      }
   }
}

Referenced by IntSendSyncPaint(), and UserSyncAndPaintWindows().

IntValidateParents()

BOOL FASTCALL IntValidateParents	(	PWND	Child,
		BOOL	Recurse
	)

Definition at line 62 of file painting.c.

{
   RECTL ParentRect, Rect;
   BOOL Start, Ret = TRUE;
   PWND ParentWnd = Child;
   PREGION Rgn = NULL;
 
   if (ParentWnd->style & WS_CHILD)
   {
      do
         ParentWnd = ParentWnd->spwndParent;
      while (ParentWnd->style & WS_CHILD);
   }
 
   // No pending nonclient paints.
   if (!(ParentWnd->state & WNDS_SYNCPAINTPENDING)) Recurse = FALSE;
 
   Start = TRUE;
   ParentWnd = Child->spwndParent;
   while (ParentWnd)
   {
      if (ParentWnd->style & WS_CLIPCHILDREN)
         break;
 
      if (ParentWnd->hrgnUpdate != 0)
      {
         if (Recurse)
         {
            Ret = FALSE;
            break;
         }
         // Start with child clipping.
         if (Start)
         {
            Start = FALSE;
 
            Rect = Child->rcWindow;
 
            if (!IntIntersectWithParents(Child, &Rect)) break;
 
            Rgn = IntSysCreateRectpRgnIndirect(&Rect);
 
            if (Child->hrgnClip)
            {
               PREGION RgnClip = REGION_LockRgn(Child->hrgnClip);
               IntGdiCombineRgn(Rgn, Rgn, RgnClip, RGN_AND);
               REGION_UnlockRgn(RgnClip);
            }
         }
 
         ParentRect = ParentWnd->rcWindow;
 
         if (!IntIntersectWithParents(ParentWnd, &ParentRect)) break;
 
         IntInvalidateWindows( ParentWnd,
                               Rgn,
                               RDW_VALIDATE | RDW_NOCHILDREN | RDW_NOUPDATEDIRTY);
      }
      ParentWnd = ParentWnd->spwndParent;
   }
 
   if (Rgn) REGION_Delete(Rgn);
 
   return Ret;
}

Referenced by co_IntUpdateWindows().

NtUserBeginPaint()

HDC APIENTRY NtUserBeginPaint	(	HWND	hWnd,
		PAINTSTRUCT *	UnsafePs
	)

Definition at line 1614 of file painting.c.

{
   PWND Window;
   PAINTSTRUCT Ps;
   NTSTATUS Status;
   HDC hDC;
   USER_REFERENCE_ENTRY Ref;
   HDC Ret = NULL;
 
   TRACE("Enter NtUserBeginPaint\n");
   UserEnterExclusive();
 
   if (!(Window = UserGetWindowObject(hWnd)))
   {
      goto Cleanup; // Return NULL
   }
 
   UserRefObjectCo(Window, &Ref);
 
   hDC = IntBeginPaint(Window, &Ps);
 
   Status = MmCopyToCaller(UnsafePs, &Ps, sizeof(PAINTSTRUCT));
   if (! NT_SUCCESS(Status))
   {
      SetLastNtError(Status);
      goto Cleanup; // Return NULL
   }
 
   Ret = hDC;
 
Cleanup:
   if (Window) UserDerefObjectCo(Window);
 
   TRACE("Leave NtUserBeginPaint, ret=%p\n", Ret);
   UserLeave();
   return Ret;
}

Referenced by BeginPaint().

NtUserDrawCaption()

BOOL APIENTRY NtUserDrawCaption	(	HWND	hWnd,
		HDC	hDC,
		LPCRECT	lpRc,
		UINT	uFlags
	)

Definition at line 2456 of file painting.c.

{
   return NtUserDrawCaptionTemp(hWnd, hDC, lpRc, 0, 0, NULL, uFlags);
}

Referenced by DrawCaption(), RealUserDrawCaption(), and UserPaintCaption().

NtUserDrawCaptionTemp()

BOOL APIENTRY NtUserDrawCaptionTemp	(	HWND	hWnd,
		HDC	hDC,
		LPCRECT	lpRc,
		HFONT	hFont,
		HICON	hIcon,
		const PUNICODE_STRING	str,
		UINT	uFlags
	)

Definition at line 2373 of file painting.c.

{
   PWND pWnd = NULL;
   UNICODE_STRING SafeStr = {0};
   NTSTATUS Status = STATUS_SUCCESS;
   RECTL SafeRect;
   BOOL Ret;
 
   UserEnterExclusive();
 
   if (hWnd != NULL)
   {
     if(!(pWnd = UserGetWindowObject(hWnd)))
     {
        UserLeave();
        return FALSE;
     }
   }
 
   _SEH2_TRY
   {
      ProbeForRead(lpRc, sizeof(RECTL), sizeof(ULONG));
      RtlCopyMemory(&SafeRect, lpRc, sizeof(RECTL));
      if (str != NULL)
      {
         SafeStr = ProbeForReadUnicodeString(str);
         if (SafeStr.Length != 0)
         {
             ProbeForRead( SafeStr.Buffer,
                           SafeStr.Length,
                            sizeof(WCHAR));
         }
      }
   }
   _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
   {
      Status = _SEH2_GetExceptionCode();
   }
   _SEH2_END;
 
   if (Status != STATUS_SUCCESS)
   {
      SetLastNtError(Status);
      UserLeave();
      return FALSE;
   }
 
   if (str != NULL)
      Ret = UserDrawCaption(pWnd, hDC, &SafeRect, hFont, hIcon, &SafeStr, uFlags);
   else
   {
      if ( RECTL_bIsEmptyRect(&SafeRect) && hFont == 0 && hIcon == 0 )
      {
         Ret = TRUE;
         if (uFlags & DC_DRAWCAPTIONMD)
         {
            ERR("NC Caption Mode\n");
            UserDrawCaptionBar(pWnd, hDC, uFlags);
            goto Exit;
         }
         else if (uFlags & DC_DRAWFRAMEMD)
         {
            ERR("NC Paint Mode\n");
            NC_DoNCPaint(pWnd, hDC, uFlags); // Update Menus too!
            goto Exit;
         }
      }
      Ret = UserDrawCaption(pWnd, hDC, &SafeRect, hFont, hIcon, NULL, uFlags);
   }
Exit:
   UserLeave();
   return Ret;
}

Referenced by DrawCaptionTempW(), and NtUserDrawCaption().

NtUserEndPaint()

BOOL APIENTRY NtUserEndPaint	(	HWND	hWnd,
		CONST PAINTSTRUCT *	pUnsafePs
	)

Definition at line 1660 of file painting.c.

{
   NTSTATUS Status = STATUS_SUCCESS;
   PWND Window;
   PAINTSTRUCT Ps;
   USER_REFERENCE_ENTRY Ref;
   BOOL Ret = FALSE;
 
   TRACE("Enter NtUserEndPaint\n");
   UserEnterExclusive();
 
   if (!(Window = UserGetWindowObject(hWnd)))
   {
      goto Cleanup; // Return FALSE
   }
 
   UserRefObjectCo(Window, &Ref); // Here for the exception.
 
   _SEH2_TRY
   {
      ProbeForRead(pUnsafePs, sizeof(*pUnsafePs), 1);
      RtlCopyMemory(&Ps, pUnsafePs, sizeof(PAINTSTRUCT));
   }
   _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
   {
      Status = _SEH2_GetExceptionCode();
   }
   _SEH2_END
   if (!NT_SUCCESS(Status))
   {
      goto Cleanup; // Return FALSE
   }
 
   Ret = IntEndPaint(Window, &Ps);
 
Cleanup:
   if (Window) UserDerefObjectCo(Window);
 
   TRACE("Leave NtUserEndPaint, ret=%i\n", Ret);
   UserLeave();
   return Ret;
}

Referenced by EndPaint().

NtUserExcludeUpdateRgn()

INT APIENTRY NtUserExcludeUpdateRgn	(	HDC	hDC,
		HWND	hWnd
	)

Definition at line 2518 of file painting.c.

{
    INT ret = ERROR;
    PWND pWnd;
 
    TRACE("Enter NtUserExcludeUpdateRgn\n");
    UserEnterExclusive();
 
    pWnd = UserGetWindowObject(hWnd);
 
    if (hDC && pWnd)
        ret = co_UserExcludeUpdateRgn(hDC, pWnd);
 
    TRACE("Leave NtUserExcludeUpdateRgn, ret=%i\n", ret);
 
    UserLeave();
    return ret;
}

Referenced by ExcludeUpdateRgn().

NtUserFillWindow()

BOOL APIENTRY NtUserFillWindow	(	HWND	hWndParent,
		HWND	hWnd,
		HDC	hDC,
		HBRUSH	hBrush
	)

Definition at line 1710 of file painting.c.

{
   BOOL ret = FALSE;
   PWND pWnd, pWndParent = NULL;
   USER_REFERENCE_ENTRY Ref;
 
   TRACE("Enter NtUserFillWindow\n");
   UserEnterExclusive();
 
   if (!hDC)
   {
      goto Exit;
   }
 
   if (!(pWnd = UserGetWindowObject(hWnd)))
   {
      goto Exit;
   }
 
   if (hWndParent && !(pWndParent = UserGetWindowObject(hWndParent)))
   {
      goto Exit;
   }
 
   UserRefObjectCo(pWnd, &Ref);
   ret = IntFillWindow( pWndParent, pWnd, hDC, hBrush );
   UserDerefObjectCo(pWnd);
 
Exit:
   TRACE("Leave NtUserFillWindow, ret=%i\n",ret);
   UserLeave();
   return ret;
}

NtUserFlashWindowEx()

BOOL APIENTRY NtUserFlashWindowEx

(

IN PFLASHWINFO

pfwi

)

Definition at line 1751 of file painting.c.

{
   PWND pWnd;
   FLASHWINFO finfo = {0};
   BOOL Ret = FALSE;
 
   UserEnterExclusive();
 
   _SEH2_TRY
   {
      ProbeForRead(pfwi, sizeof(FLASHWINFO), 1);
      RtlCopyMemory(&finfo, pfwi, sizeof(FLASHWINFO));
   }
   _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
   {
      SetLastNtError(_SEH2_GetExceptionCode());
      _SEH2_YIELD(goto Exit);
   }
   _SEH2_END
 
   if (!( pWnd = ValidateHwndNoErr(finfo.hwnd)) ||
        finfo.cbSize != sizeof(FLASHWINFO) ||
        finfo.dwFlags & ~(FLASHW_ALL|FLASHW_TIMER|FLASHW_TIMERNOFG) )
   {
      EngSetLastError(ERROR_INVALID_PARAMETER);
      goto Exit;
   }
 
   Ret = IntFlashWindowEx(pWnd, &finfo);
 
Exit:
   UserLeave();
   return Ret;
}

Referenced by FlashWindow(), and FlashWindowEx().

NtUserGetUpdateRect()

BOOL APIENTRY NtUserGetUpdateRect	(	HWND	hWnd,
		LPRECT	UnsafeRect,
		BOOL	bErase
	)

Definition at line 1961 of file painting.c.

{
   PWND Window;
   RECTL Rect;
   NTSTATUS Status;
   BOOL Ret = FALSE;
 
   TRACE("Enter NtUserGetUpdateRect\n");
   UserEnterExclusive();
 
   if (!(Window = UserGetWindowObject(hWnd)))
   {
      goto Exit; // Return FALSE
   }
 
   Ret = co_UserGetUpdateRect(Window, &Rect, bErase);
 
   if (UnsafeRect != NULL)
   {
      Status = MmCopyToCaller(UnsafeRect, &Rect, sizeof(RECTL));
      if (!NT_SUCCESS(Status))
      {
         EngSetLastError(ERROR_INVALID_PARAMETER);
         Ret = FALSE;
      }
   }
 
Exit:
   TRACE("Leave NtUserGetUpdateRect, ret=%i\n", Ret);
   UserLeave();
   return Ret;
}

Referenced by GetUpdateRect().

NtUserGetUpdateRgn()

INT APIENTRY NtUserGetUpdateRgn	(	HWND	hWnd,
		HRGN	hRgn,
		BOOL	bErase
	)

Definition at line 1934 of file painting.c.

{
   PWND Window;
   INT ret = ERROR;
 
   TRACE("Enter NtUserGetUpdateRgn\n");
   UserEnterExclusive();
 
   Window = UserGetWindowObject(hWnd);
   if (Window)
   {
      ret = co_UserGetUpdateRgn(Window, hRgn, bErase);
   }
 
   TRACE("Leave NtUserGetUpdateRgn, ret=%i\n", ret);
   UserLeave();
   return ret;
}

Referenced by GetUpdateRgn().

NtUserInvalidateRect()

BOOL APIENTRY NtUserInvalidateRect	(	HWND	hWnd,
		CONST RECT *	lpUnsafeRect,
		BOOL	bErase
	)

Definition at line 2541 of file painting.c.

{
    UINT flags = RDW_INVALIDATE | (bErase ? RDW_ERASE : 0);
    if (!hWnd)
    {
       flags = RDW_ALLCHILDREN | RDW_INVALIDATE | RDW_FRAME | RDW_ERASE | RDW_ERASENOW;
       lpUnsafeRect = NULL;
    }
    return NtUserRedrawWindow(hWnd, lpUnsafeRect, NULL, flags);
}

Referenced by ComboWndProc_common(), and InvalidateRect().

NtUserInvalidateRgn()

BOOL APIENTRY NtUserInvalidateRgn	(	HWND	hWnd,
		HRGN	hRgn,
		BOOL	bErase
	)

Definition at line 2557 of file painting.c.

{
    if (!hWnd)
    {
       EngSetLastError( ERROR_INVALID_WINDOW_HANDLE );
       return FALSE;
    }
    return NtUserRedrawWindow(hWnd, NULL, hRgn, RDW_INVALIDATE | (bErase? RDW_ERASE : 0));
}

Referenced by InvalidateRgn().

NtUserPrintWindow()

BOOL APIENTRY NtUserPrintWindow	(	HWND	hwnd,
		HDC	hdcBlt,
		UINT	nFlags
	)

Definition at line 2572 of file painting.c.

{
    PWND Window;
    BOOL Ret = FALSE;
 
    UserEnterExclusive();
 
    if (hwnd)
    {
       if (!(Window = UserGetWindowObject(hwnd)) ||
            UserIsDesktopWindow(Window) || UserIsMessageWindow(Window))
       {
          goto Exit;
       }
 
       if ( Window )
       {
          /* Validate flags and check it as a mask for 0 or 1. */
          if ( (nFlags & PW_CLIENTONLY) == nFlags)
             Ret = IntPrintWindow( Window, hdcBlt, nFlags);
          else
             EngSetLastError(ERROR_INVALID_PARAMETER);
       }
    }
Exit:
    UserLeave();
    return Ret;
}

NtUserRedrawWindow()

BOOL APIENTRY NtUserRedrawWindow	(	HWND	hWnd,
		CONST RECT *	lprcUpdate,
		HRGN	hrgnUpdate,
		UINT	flags
	)

Definition at line 2002 of file painting.c.

{
   RECTL SafeUpdateRect;
   PWND Wnd;
   BOOL Ret = FALSE;
   USER_REFERENCE_ENTRY Ref;
   NTSTATUS Status = STATUS_SUCCESS;
   PREGION RgnUpdate = NULL;
 
   TRACE("Enter NtUserRedrawWindow\n");
   UserEnterExclusive();
 
   if (!(Wnd = UserGetWindowObject(hWnd ? hWnd : IntGetDesktopWindow())))
   {
      goto Exit; // Return FALSE
   }
 
   if (lprcUpdate)
   {
      _SEH2_TRY
      {
          ProbeForRead(lprcUpdate, sizeof(RECTL), 1);
          RtlCopyMemory(&SafeUpdateRect, lprcUpdate, sizeof(RECTL));
      }
      _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
      {
         Status = _SEH2_GetExceptionCode();
      }
      _SEH2_END
      if (!NT_SUCCESS(Status))
      {
         EngSetLastError(RtlNtStatusToDosError(Status));
         goto Exit; // Return FALSE
      }
   }
 
   if ( flags & ~(RDW_ERASE|RDW_FRAME|RDW_INTERNALPAINT|RDW_INVALIDATE|
                  RDW_NOERASE|RDW_NOFRAME|RDW_NOINTERNALPAINT|RDW_VALIDATE|
                  RDW_ERASENOW|RDW_UPDATENOW|RDW_ALLCHILDREN|RDW_NOCHILDREN) )
   {
      /* RedrawWindow fails only in case that flags are invalid */
      EngSetLastError(ERROR_INVALID_FLAGS);
      goto Exit; // Return FALSE
   }
 
   /* We can't hold lock on GDI objects while doing roundtrips to user mode,
    * so it will be copied.
    */
   if (hrgnUpdate > HRGN_WINDOW)
   {
       RgnUpdate = REGION_LockRgn(hrgnUpdate);
       if (!RgnUpdate)
       {
           EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
           goto Exit; // Return FALSE
       }
       REGION_UnlockRgn(RgnUpdate);
   }
   else if (hrgnUpdate == HRGN_WINDOW) // Trap it out.
   {
       ERR("NTRW: Caller is passing Window Region 1\n");
   }
 
   UserRefObjectCo(Wnd, &Ref);
 
   Ret = co_UserRedrawWindow( Wnd,
                              lprcUpdate ? &SafeUpdateRect : NULL,
                              RgnUpdate,
                              flags);
 
   UserDerefObjectCo(Wnd);
 
Exit:
   TRACE("Leave NtUserRedrawWindow, ret=%i\n", Ret);
   UserLeave();
   return Ret;
}

Referenced by NtUserInvalidateRect(), NtUserInvalidateRgn(), NtUserValidateRect(), RedrawWindow(), SpiSetWallpaper(), START_TEST(), UpdateWindow(), and ValidateRgn().

NtUserValidateRect()

BOOL APIENTRY NtUserValidateRect	(	HWND	hWnd,
		const RECT *	lpRect
	)

Definition at line 2608 of file painting.c.

{
    UINT flags = RDW_VALIDATE;
    if (!hWnd)
    {
       flags = RDW_ALLCHILDREN | RDW_INVALIDATE | RDW_FRAME | RDW_ERASE | RDW_ERASENOW;
       lpRect = NULL;
    }
    return NtUserRedrawWindow(hWnd, lpRect, NULL, flags);
}

PaintSuspendedWindow()

VOID FASTCALL PaintSuspendedWindow	(	PWND	pwnd,
		HRGN	hrgnOrig
	)

Definition at line 1027 of file painting.c.

{
   if (pwnd->hrgnUpdate)
   {
      HDC hDC;
      INT Flags = DC_NC|DC_NOSENDMSG;
      HRGN hrgnTemp;
      RECT Rect;
      INT type;
      PREGION prgn;
 
      if (pwnd->hrgnUpdate > HRGN_WINDOW)
      {
         hrgnTemp = NtGdiCreateRectRgn(0, 0, 0, 0);
         type = NtGdiCombineRgn( hrgnTemp, pwnd->hrgnUpdate, 0, RGN_COPY);
         if (type == ERROR)
         {
            GreDeleteObject(hrgnTemp);
            hrgnTemp = HRGN_WINDOW;
         }
      }
      else
      {
         hrgnTemp = GreCreateRectRgnIndirect(&pwnd->rcWindow);
      }
 
      if ( hrgnOrig &&
           hrgnTemp > HRGN_WINDOW &&
           NtGdiCombineRgn(hrgnTemp, hrgnTemp, hrgnOrig, RGN_AND) == NULLREGION)
      {
         GreDeleteObject(hrgnTemp);
         return;
      }
 
      hDC = UserGetDCEx(pwnd, hrgnTemp, DCX_WINDOW|DCX_INTERSECTRGN|DCX_USESTYLE|DCX_KEEPCLIPRGN);
 
      Rect = pwnd->rcWindow;
      RECTL_vOffsetRect(&Rect, -pwnd->rcWindow.left, -pwnd->rcWindow.top);
 
      // Clear out client area!
      FillRect(hDC, &Rect, IntGetSysColorBrush(COLOR_WINDOW));
 
      NC_DoNCPaint(pwnd, hDC, Flags); // Redraw without MENUs.
 
      UserReleaseDC(pwnd, hDC, FALSE);
 
      prgn = REGION_LockRgn(hrgnTemp);
      IntInvalidateWindows(pwnd, prgn, RDW_INVALIDATE | RDW_FRAME | RDW_ERASE | RDW_ALLCHILDREN);
      REGION_UnlockRgn(prgn);
 
      // Set updates for this window.
      pwnd->state |= WNDS_SENDNCPAINT|WNDS_SENDERASEBACKGROUND|WNDS_UPDATEDIRTY;
 
      // DCX_KEEPCLIPRGN is set. Check it anyway.
      if (hrgnTemp > HRGN_WINDOW && GreIsHandleValid(hrgnTemp)) GreDeleteObject(hrgnTemp);
   }
}

Referenced by UpdateTheadChildren().

UpdateTheadChildren()

VOID FASTCALL UpdateTheadChildren	(	PWND	pWnd,
		HRGN	hRgn
	)

Definition at line 1086 of file painting.c.

{
   PaintSuspendedWindow( pWnd, hRgn );
 
   if (!(pWnd->style & WS_CLIPCHILDREN))
      return;
 
   pWnd = pWnd->spwndChild; // invalidate children if any.
   while (pWnd)
   {
      UpdateTheadChildren( pWnd, hRgn );
      pWnd = pWnd->spwndNext;
   }
}

Referenced by UpdateTheadChildren(), and UpdateThreadWindows().

UpdateThreadWindows()

VOID FASTCALL UpdateThreadWindows	(	PWND	pWnd,
		PTHREADINFO	pti,
		HRGN	hRgn
	)

Definition at line 1102 of file painting.c.

{
   PWND pwndTemp;
 
   for ( pwndTemp = pWnd;
         pwndTemp;
         pwndTemp = pwndTemp->spwndNext )
   {
      if (pwndTemp->head.pti == pti)
      {
          UserUpdateWindows(pwndTemp, RDW_ALLCHILDREN);
      }
      else
      {
          if (IsThreadSuspended(pwndTemp->head.pti) || MsqIsHung(pwndTemp->head.pti, MSQ_HUNG))
          {
             UpdateTheadChildren(pwndTemp, hRgn);
          }
          else
             UserUpdateWindows(pwndTemp, RDW_ALLCHILDREN);
      }
   }
}

Referenced by DefWndDoSizeMove().

UserDrawCaption()

BOOL UserDrawCaption	(	PWND	pWnd,
		HDC	hDc,
		RECTL *	lpRc,
		HFONT	hFont,
		HICON	hIcon,
		const PUNICODE_STRING	Str,
		UINT	uFlags
	)

Definition at line 2191 of file painting.c.

{
   BOOL Ret = FALSE;
   HBRUSH hBgBrush, hOldBrush = NULL;
   RECTL Rect = *lpRc;
   BOOL HasIcon;
 
   RECTL_vMakeWellOrdered(lpRc);
 
   /* Determine whether the icon needs to be displayed */
   if (!hIcon && pWnd != NULL)
   {
     HasIcon = (uFlags & DC_ICON) && !(uFlags & DC_SMALLCAP) &&
               (pWnd->style & WS_SYSMENU) && !(pWnd->ExStyle & WS_EX_TOOLWINDOW);
   }
   else
     HasIcon = (hIcon != NULL);
 
   // Draw the caption background
   if((uFlags & DC_GRADIENT) && !(uFlags & DC_INBUTTON))
   {
      static GRADIENT_RECT gcap = {0, 1};
      TRIVERTEX Vertices[2];
      COLORREF Colors[2];
 
      Colors[0] = IntGetSysColor((uFlags & DC_ACTIVE) ?
            COLOR_ACTIVECAPTION : COLOR_INACTIVECAPTION);
 
      Colors[1] = IntGetSysColor((uFlags & DC_ACTIVE) ?
            COLOR_GRADIENTACTIVECAPTION : COLOR_GRADIENTINACTIVECAPTION);
 
      Vertices[0].x = Rect.left;
      Vertices[0].y = Rect.top;
      Vertices[0].Red = (WORD)Colors[0]<<8;
      Vertices[0].Green = (WORD)Colors[0] & 0xFF00;
      Vertices[0].Blue = (WORD)(Colors[0]>>8) & 0xFF00;
      Vertices[0].Alpha = 0;
 
      Vertices[1].x = Rect.right;
      Vertices[1].y = Rect.bottom;
      Vertices[1].Red = (WORD)Colors[1]<<8;
      Vertices[1].Green = (WORD)Colors[1] & 0xFF00;
      Vertices[1].Blue = (WORD)(Colors[1]>>8) & 0xFF00;
      Vertices[1].Alpha = 0;
 
      if(!GreGradientFill(hDc, Vertices, 2, &gcap, 1, GRADIENT_FILL_RECT_H))
      {
         ERR("GreGradientFill() failed!\n");
         goto cleanup;
      }
   }
   else
   {
      if(uFlags & DC_INBUTTON)
         hBgBrush = IntGetSysColorBrush(COLOR_3DFACE);
      else if(uFlags & DC_ACTIVE)
         hBgBrush = IntGetSysColorBrush(COLOR_ACTIVECAPTION);
      else
         hBgBrush = IntGetSysColorBrush(COLOR_INACTIVECAPTION);
 
      hOldBrush = NtGdiSelectBrush(hDc, hBgBrush);
 
      if(!hOldBrush)
      {
         ERR("NtGdiSelectBrush() failed!\n");
         goto cleanup;
      }
 
      if(!NtGdiPatBlt(hDc, Rect.left, Rect.top,
         Rect.right - Rect.left,
         Rect.bottom - Rect.top,
         PATCOPY))
      {
         ERR("NtGdiPatBlt() failed!\n");
         goto cleanup;
      }
   }
 
   /* Draw icon */
   if (HasIcon)
   {
      PCURICON_OBJECT pIcon = NULL;
 
      if (hIcon)
      {
          pIcon = UserGetCurIconObject(hIcon);
      }
      else if (pWnd)
      {
          pIcon = NC_IconForWindow(pWnd);
          // FIXME: NC_IconForWindow should reference it for us */
          if (pIcon)
              UserReferenceObject(pIcon);
      }
 
      if (pIcon)
      {
         LONG cx = UserGetSystemMetrics(SM_CXSMICON);
         LONG cy = UserGetSystemMetrics(SM_CYSMICON);
         LONG x = Rect.left - cx/2 + 1 + (Rect.bottom - Rect.top)/2; // this is really what Window does
         LONG y = (Rect.top + Rect.bottom - cy)/2; // center
         UserDrawIconEx(hDc, x, y, pIcon, cx, cy, 0, NULL, DI_NORMAL);
         UserDereferenceObject(pIcon);
      }
      else
      {
          HasIcon = FALSE;
      }
   }
 
   if (HasIcon)
      Rect.left += Rect.bottom - Rect.top;
 
   if((uFlags & DC_TEXT))
   {
      BOOL Set = FALSE;
      Rect.left += 2;
 
      if (Str)
         Set = UserDrawCaptionText(pWnd, hDc, Str, &Rect, uFlags, hFont);
      else if (pWnd != NULL) // FIXME: Windows does not do that
      {
         UNICODE_STRING ustr;
         ustr.Buffer = pWnd->strName.Buffer; // FIXME: LARGE_STRING truncated!
         ustr.Length = (USHORT)min(pWnd->strName.Length, MAXUSHORT);
         ustr.MaximumLength = (USHORT)min(pWnd->strName.MaximumLength, MAXUSHORT);
         Set = UserDrawCaptionText(pWnd, hDc, &ustr, &Rect, uFlags, hFont);
      }
      if (pWnd)
      {
         if (Set)
            pWnd->state2 &= ~WNDS2_CAPTIONTEXTTRUNCATED;
         else
            pWnd->state2 |= WNDS2_CAPTIONTEXTTRUNCATED;
      }
   }
 
   Ret = TRUE;
 
cleanup:
   if (hOldBrush) NtGdiSelectBrush(hDc, hOldBrush);
 
   return Ret;
}

Referenced by NC_DoNCPaint(), NtUserDrawCaptionTemp(), and UserDrawCaptionBar().

UserDrawCaptionText()

BOOL UserDrawCaptionText	(	PWND	pWnd,
		HDC	hDc,
		const PUNICODE_STRING	Text,
		const RECTL *	lpRc,
		UINT	uFlags,
		HFONT	hFont
	)

Definition at line 2085 of file painting.c.

{
   HFONT hOldFont = NULL;
   COLORREF OldTextColor;
   NONCLIENTMETRICSW nclm;
   NTSTATUS Status;
   BOOLEAN bDeleteFont = FALSE;
   SIZE Size;
   BOOL Ret = TRUE;
   ULONG fit = 0, Length;
   RECTL r = *lpRc;
 
   TRACE("UserDrawCaptionText: %wZ\n", Text);
 
   nclm.cbSize = sizeof(nclm);
   if (!UserSystemParametersInfo(SPI_GETNONCLIENTMETRICS, nclm.cbSize, &nclm, 0))
   {
      ERR("UserSystemParametersInfo() failed!\n");
      return FALSE;
   }
 
   if (!hFont)
   {
      if(uFlags & DC_SMALLCAP)
         Status = TextIntCreateFontIndirect(&nclm.lfSmCaptionFont, &hFont);
      else
         Status = TextIntCreateFontIndirect(&nclm.lfCaptionFont, &hFont);
 
      if(!NT_SUCCESS(Status))
      {
         ERR("TextIntCreateFontIndirect() failed! Status: 0x%x\n", Status);
         return FALSE;
      }
 
      bDeleteFont = TRUE;
   }
 
   IntGdiSetBkMode(hDc, TRANSPARENT);
 
   hOldFont = NtGdiSelectFont(hDc, hFont);
 
   if(uFlags & DC_INBUTTON)
      OldTextColor = IntGdiSetTextColor(hDc, IntGetSysColor(COLOR_BTNTEXT));
   else
      OldTextColor = IntGdiSetTextColor(hDc,
                                        IntGetSysColor(uFlags & DC_ACTIVE ? COLOR_CAPTIONTEXT : COLOR_INACTIVECAPTIONTEXT));
 
   // Adjust for system menu.
   if (pWnd && pWnd->style & WS_SYSMENU)
   {
      r.right -= UserGetSystemMetrics(SM_CYCAPTION) - 1;
      if ((pWnd->style & (WS_MAXIMIZEBOX | WS_MINIMIZEBOX)) && !(pWnd->ExStyle & WS_EX_TOOLWINDOW))
      {
         r.right -= UserGetSystemMetrics(SM_CXSIZE) + 1;
         r.right -= UserGetSystemMetrics(SM_CXSIZE) + 1;
      }
   }
 
   GreGetTextExtentExW(hDc, Text->Buffer, Text->Length/sizeof(WCHAR), r.right - r.left, &fit, 0, &Size, 0);
 
   Length = (Text->Length/sizeof(WCHAR) == fit ? fit : fit+1);
 
   if (Text->Length/sizeof(WCHAR) > Length)
   {
      Ret = FALSE;
   }
 
   if (Ret)
   {  // Faster while in setup.
      UserExtTextOutW( hDc,
                      lpRc->left,
                      lpRc->top + (lpRc->bottom - lpRc->top - Size.cy) / 2, // DT_SINGLELINE && DT_VCENTER
                      ETO_CLIPPED,
                     (RECTL *)lpRc,
                      Text->Buffer,
                      Length);
   }
   else
   {
      DrawTextW( hDc,
                 Text->Buffer,
                 Text->Length/sizeof(WCHAR),
                (RECTL *)&r,
                 DT_END_ELLIPSIS|DT_SINGLELINE|DT_VCENTER|DT_NOPREFIX|DT_LEFT);
   }
 
   IntGdiSetTextColor(hDc, OldTextColor);
 
   if (hOldFont)
      NtGdiSelectFont(hDc, hOldFont);
 
   if (bDeleteFont)
      GreDeleteObject(hFont);
 
   return Ret;
}

Referenced by UserDrawCaption().

UserExtTextOutW()

BOOL UserExtTextOutW	(	HDC	hdc,
		INT	x,
		INT	y,
		UINT	flags,
		PRECTL	lprc,
		LPCWSTR	lpString,
		UINT	count
	)

Referenced by DrawTextExWorker(), and UserDrawCaptionText().

UserRealizePalette()

INT FASTCALL UserRealizePalette

(

HDC

hdc

)

Definition at line 2345 of file painting.c.

{
  HWND hWnd, hWndDesktop;
  DWORD Ret;
 
  Ret = IntGdiRealizePalette(hdc);
  if (Ret) // There was a change.
  {
      hWnd = IntWindowFromDC(hdc);
      if (hWnd) // Send broadcast if dc is associated with a window.
      {  // FYI: Thread locked in CallOneParam.
         hWndDesktop = IntGetDesktopWindow();
         if ( hWndDesktop != hWnd )
         {
            PWND pWnd = UserGetWindowObject(hWndDesktop);
            ERR("RealizePalette Desktop.\n");
            hdc = UserGetWindowDC(pWnd);
            IntPaintDesktop(hdc);
            UserReleaseDC(pWnd,hdc,FALSE);
         }
         UserSendNotifyMessage((HWND)HWND_BROADCAST, WM_PALETTECHANGED, (WPARAM)hWnd, 0);
      }
  }
  return Ret;
}

UserSyncAndPaintWindows()

VOID FASTCALL UserSyncAndPaintWindows	(	PWND	pWnd,
		ULONG	Flags
	)

Definition at line 623 of file painting.c.

{
   PWND Parent = pWnd;
   // Find parent, if it needs to be painted, leave.
   while(TRUE)
   {
      if ((Parent = Parent->spwndParent) == NULL) break;
      if ( Parent->style & WS_CLIPCHILDREN ) break;
      if ( Parent->hrgnUpdate != NULL || Parent->state & WNDS_INTERNALPAINT ) return;
   }
 
   IntSendSyncPaint(pWnd, Flags);
   co_IntPaintWindows(pWnd, Flags, FALSE);
}

Referenced by co_UserRedrawWindow(), and co_WinPosSetWindowPos().

UserUpdateWindows()

VOID FASTCALL UserUpdateWindows	(	PWND	pWnd,
		ULONG	Flags
	)

Definition at line 601 of file painting.c.

{
   // If transparent and any sibling windows below needs to be painted, leave.
   if (pWnd->ExStyle & WS_EX_TRANSPARENT)
   {
      PWND Next = pWnd->spwndNext;
 
      while(Next)
      {
         if ( Next->head.pti == pWnd->head.pti &&
            ( Next->hrgnUpdate != NULL || Next->state & WNDS_INTERNALPAINT) )
         {
            return;
         }
 
         Next = Next->spwndNext;
      }
   }
   co_IntUpdateWindows(pWnd, Flags, FALSE);
}

Referenced by co_UserRedrawWindow(), and UpdateThreadWindows().