2 * ReactOS W32 Subsystem
3 * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
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.
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.
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.
21 * COPYRIGHT: See COPYING in the top level directory
22 * PROJECT: ReactOS kernel
23 * PURPOSE: GUI state check
24 * FILE: subsys/win32k/ntuser/guicheck.c
25 * PROGRAMER: Casper S. Hornstrup (chorns@users.sourceforge.net)
26 * NOTES: The GuiCheck() function performs a few delayed operations:
27 * 1) A GUI process is assigned a window station
28 * 2) A message queue is created for a GUI thread before use
29 * 3) The system window classes are registered for a process
31 * 06-06-2001 CSH Created
34 /* INCLUDES ******************************************************************/
36 #include <ddk/ntddk.h>
38 #include <win32k/win32k.h>
39 #include <include/guicheck.h>
40 #include <include/msgqueue.h>
41 #include <include/object.h>
42 #include <napi/win32.h>
43 #include <include/winsta.h>
48 /* GLOBALS *******************************************************************/
50 static ULONG NrGuiApplicationsRunning = 0;
52 /* FUNCTIONS *****************************************************************/
55 IntGraphicsCheck(BOOL Create)
59 if (0 == NrGuiApplicationsRunning)
61 IntInitializeDesktopGraphics();
63 NrGuiApplicationsRunning++;
67 if (0 < NrGuiApplicationsRunning)
69 NrGuiApplicationsRunning--;
71 if (0 == NrGuiApplicationsRunning)
73 IntEndDesktopGraphics();