dlls/user32/painting.c

   1 /*
   2  * Window painting functions
   3  *
   4  * Copyright 1993, 1994, 1995, 2001, 2004, 2005, 2008 Alexandre Julliard
   5  * Copyright 1996, 1997, 1999 Alex Korobka
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "user_private.h"
  23
  24
  25 /***********************************************************************
  26  *              UpdateWindow (USER32.@)
  27  */
  28 BOOL WINAPI UpdateWindow( HWND hwnd )
  29 {
  30     if (!hwnd)
  31     {
  32         SetLastError( ERROR_INVALID_WINDOW_HANDLE );
  33         return FALSE;
  34     }
  35
  36     return NtUserRedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_ALLCHILDREN );
  37 }
  38
  39
  40 /***********************************************************************
  41  *              ValidateRgn (USER32.@)
  42  */
  43 BOOL WINAPI ValidateRgn( HWND hwnd, HRGN hrgn )
  44 {
  45     if (!hwnd)
  46     {
  47         SetLastError( ERROR_INVALID_WINDOW_HANDLE );
  48         return FALSE;
  49     }
  50
  51     return NtUserRedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE );
  52 }
  53
  54
  55 /*************************************************************************
  56  *              ScrollWindow (USER32.@)
  57  *
  58  */
  59 BOOL WINAPI ScrollWindow( HWND hwnd, INT dx, INT dy,
  60                           const RECT *rect, const RECT *clipRect )
  61 {
  62     UINT flags = SW_INVALIDATE | SW_ERASE | (rect ? 0 : SW_SCROLLCHILDREN) | SW_NODCCACHE;
  63     return NtUserScrollWindowEx( hwnd, dx, dy, rect, clipRect, 0, NULL, flags );
  64 }