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