mirror of
https://github.com/reactos/reactos.git
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93 lines
2.2 KiB
C
93 lines
2.2 KiB
C
/*
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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: win32ss/user/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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*/
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#include <win32k.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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co_IntUserManualGuiCheck(BOOL Create)
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{
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PPROCESSINFO W32Data = (PPROCESSINFO)PsGetCurrentProcessWin32Process();
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W32Data->W32PF_flags |= W32PF_MANUALGUICHECK;
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if (Create)
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{
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co_AddGuiApp(W32Data);
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}
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else
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{
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RemoveGuiApp(W32Data);
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}
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}
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/* EOF */
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