reactos/subsystems/win32/win32k/ntuser/guicheck.c
Jérôme Gardou 88c9e7c6e8 Sync with trunk (r47116), hopefully without breaking anything.
svn path=/branches/reactos-yarotows/; revision=47117
2010-05-07 07:41:13 +00:00

140 lines
3.5 KiB
C

/*
* ReactOS W32 Subsystem
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/* $Id$
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
* PURPOSE: GUI state check
* FILE: subsys/win32k/ntuser/guicheck.c
* PROGRAMER: Casper S. Hornstrup (chorns@users.sourceforge.net)
* NOTES: The GuiCheck() function performs a few delayed operations:
* 1) A GUI process is assigned a window station
* 2) A message queue is created for a GUI thread before use
* 3) The system window classes are registered for a process
* REVISION HISTORY:
* 06-06-2001 CSH Created
*/
/* INCLUDES ******************************************************************/
#include <win32k.h>
#define NDEBUG
#include <debug.h>
/* GLOBALS *******************************************************************/
static LONG NrGuiAppsRunning = 0;
/* FUNCTIONS *****************************************************************/
static BOOL FASTCALL
co_AddGuiApp(PPROCESSINFO W32Data)
{
W32Data->W32PF_flags |= W32PF_CREATEDWINORDC;
if (InterlockedIncrement(&NrGuiAppsRunning) == 1)
{
BOOL Initialized;
Initialized = co_IntInitializeDesktopGraphics();
if (!Initialized)
{
W32Data->W32PF_flags &= ~W32PF_CREATEDWINORDC;
InterlockedDecrement(&NrGuiAppsRunning);
return FALSE;
}
}
return TRUE;
}
static void FASTCALL
RemoveGuiApp(PPROCESSINFO W32Data)
{
W32Data->W32PF_flags &= ~W32PF_CREATEDWINORDC;
if (InterlockedDecrement(&NrGuiAppsRunning) == 0)
{
IntEndDesktopGraphics();
}
}
BOOL FASTCALL
co_IntGraphicsCheck(BOOL Create)
{
PPROCESSINFO W32Data;
W32Data = PsGetCurrentProcessWin32Process();
if (Create)
{
if (! (W32Data->W32PF_flags & W32PF_CREATEDWINORDC) && ! (W32Data->W32PF_flags & W32PF_MANUALGUICHECK))
{
return co_AddGuiApp(W32Data);
}
}
else
{
if ((W32Data->W32PF_flags & W32PF_CREATEDWINORDC) && ! (W32Data->W32PF_flags & W32PF_MANUALGUICHECK))
{
RemoveGuiApp(W32Data);
}
}
return TRUE;
}
VOID
FASTCALL
IntUserManualGuiCheck(LONG Check)
{
PPROCESSINFO W32Data;
DPRINT("Enter IntUserManualGuiCheck\n");
W32Data = PsGetCurrentProcessWin32Process();
if (0 == Check)
{
W32Data->W32PF_flags |= W32PF_MANUALGUICHECK;
}
else if (0 < Check)
{
if (! (W32Data->W32PF_flags & W32PF_CREATEDWINORDC))
{
co_AddGuiApp(W32Data);
}
}
else
{
if (W32Data->W32PF_flags & W32PF_CREATEDWINORDC)
{
RemoveGuiApp(W32Data);
}
}
DPRINT("Leave IntUserManualGuiCheck\n");
}
NTSTATUS FASTCALL
InitGuiCheckImpl (VOID)
{
return STATUS_SUCCESS;
}
/* EOF */