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fixed MsqInsertSystemMessage()

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svn path=/trunk/; revision=5853
This commit is contained in:
Thomas Bluemel 2003-08-25 14:54:06 +00:00
parent 9acc460ae1
commit 15ccb1b4be
1 changed files with 14 additions and 9 deletions
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23
reactos/subsys/win32k/ntuser/msgqueue.c
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@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software * along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/ */
/* $Id: msgqueue.c,v 1.16 2003/08/25 14:26:30 weiden Exp $ /* $Id: msgqueue.c,v 1.17 2003/08/25 14:54:06 weiden Exp $
* *
* COPYRIGHT: See COPYING in the top level directory * COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel * PROJECT: ReactOS kernel
@ -124,12 +124,11 @@ MsqInitializeImpl(VOID)
return(STATUS_SUCCESS); return(STATUS_SUCCESS);
} }
LPMSG FASTCALL ULONG FASTCALL
MsgFindSystemMessage(UINT message) MsgFindSystemMessage(UINT message)
{ {
ULONG QueuePos;
LPMSG Result = NULL;
MSG Msg; MSG Msg;
ULONG QueuePos, Result = (ULONG)-1;
if(SystemMessageQueueCount > 0) if(SystemMessageQueueCount > 0)
{ {
@ -139,7 +138,7 @@ MsgFindSystemMessage(UINT message)
Msg = SystemMessageQueue[QueuePos]; Msg = SystemMessageQueue[QueuePos];
if(Msg.message == message) if(Msg.message == message)
{ {
Result = &Msg; Result = QueuePos;
break; break;
} }
QueuePos--; QueuePos--;
@ -153,7 +152,7 @@ VOID FASTCALL
MsqInsertSystemMessage(MSG* Msg) MsqInsertSystemMessage(MSG* Msg)
{ {
KIRQL OldIrql; KIRQL OldIrql;
LPMSG mmov = NULL; ULONG mmov = (ULONG)-1;
KeAcquireSpinLock(&SystemMessageQueueLock, &OldIrql); KeAcquireSpinLock(&SystemMessageQueueLock, &OldIrql);
@ -161,10 +160,16 @@ MsqInsertSystemMessage(MSG* Msg)
if(Msg->message == WM_MOUSEMOVE) if(Msg->message == WM_MOUSEMOVE)
mmov = MsgFindSystemMessage(WM_MOUSEMOVE); mmov = MsgFindSystemMessage(WM_MOUSEMOVE);
if(mmov) if(mmov != (ULONG)-1)
{ {
/* overwrite the existing WM_MOUSEMOVE message */ /* remove old WM_MOUSEMOVE message, move previous messages and insert
*mmov = *Msg; new WM_MOUSEMOVE message at the queue head */
while(mmov > SystemMessageQueueHead)
{
SystemMessageQueue[mmov - 1] = SystemMessageQueue[mmov];
mmov--;
}
SystemMessageQueue[SystemMessageQueueHead] = *Msg;
} }
else else
{ {