[Bug 6878] New: LineTo not updating bounds rectangle (GetBoundsRect)

Wine Bugs wine-bugs at winehq.org
Tue Dec 12 12:40:28 CST 2006


http://bugs.winehq.org/show_bug.cgi?id=6878

           Summary: LineTo not updating bounds rectangle (GetBoundsRect)
           Product: Wine
           Version: 0.9.12.
          Platform: PC
               URL: http://www.bbcbasic.co.uk/boundbug.exe
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: P2
         Component: wine-gdi-(printing)
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: richard at rtrussell.co.uk


The following code should set the bounds rectangle to {0,0,1001,1001} but 
under Wine 0.9.12 the rectangle remains empty.  This causes a failed window 
refresh, since the bounds rectangle is used for a subsequent InvalidateRect.  
The window remains blank until moved or forcibly refreshed.

  RECT rc = {0} ;
  HDC hdc = GetDC (hwnd) ;
  HDC memhdc = CreateCompatibleDC (NULL);
  HBITMAP bitmap = CreateCompatibleBitmap (hdc, 1920, 1440);

  ReleaseDC (hwnd, hdc) ;
  SelectObject (memhdc, bitmap) ;

  SetBoundsRect (memhdc, NULL, DCB_ENABLE | DCB_RESET);
  MoveToEx (memhdc, 0, 0, NULL);
  LineTo (memhdc, 1000, 1000);
  GetBoundsRect (memhdc, &rc, 0);

  InvalidateRect (hwnd, &rc, 0);

A complete source file is here: http://www.bbcbasic.co.uk/boundbug.c
A Windows executable is here:   http://www.bbcbasic.co.uk/boundbug.exe

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