reactos/dll/win32/user32/windows/dc.c

   1 /*
   2  *  ReactOS kernel
   3  *  Copyright (C) 1998, 1999, 2000, 2001 ReactOS Team
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19 /* $Id$
  20  *
  21  * PROJECT:         ReactOS user32.dll
  22  * FILE:            lib/user32/windows/input.c
  23  * PURPOSE:         Input
  24  * PROGRAMMER:      Casper S. Hornstrup (chorns@users.sourceforge.net)
  25  * UPDATE HISTORY:
  26  *      09-05-2001  CSH  Created
  27  */
  28
  29 /* INCLUDES ******************************************************************/
  30
  31 #include <user32.h>
  32
  33 #include <wine/debug.h>
  34
  35 /* FUNCTIONS *****************************************************************/
  36
  37
  38 BOOL
  39 WINAPI
  40 GdiReleaseDC(HDC hdc);
  41
  42 /*
  43  * @implemented
  44  */
  45 int
  46 WINAPI
  47 ReleaseDC(HWND hWnd,
  48           HDC hDC)
  49 {
  50     // From msdn: if the DC was not released return zero.
  51     //            if the DC was released return one.
  52
  53     if (!hDC) return FALSE; // Null hDC return zero.
  54
  55     GdiReleaseDC ( hDC ); // Release locals.
  56     // Win 3.1 throw back, hWnd is ignored and not used.
  57     return NtUserCallOneParam((DWORD) hDC, ONEPARAM_ROUTINE_RELEASEDC);
  58 }
  59
  60
  61 /*
  62  * @implemented
  63  */
  64 HWND
  65 WINAPI
  66 WindowFromDC(HDC hDC)
  67 {
  68     return NtUserWindowFromDC(hDC);
  69 }