From 7f050c459be440f6110de76169955830097e4d7d Mon Sep 17 00:00:00 2001
From: Gunnar Dalsnes <hardon@online.no>
Date: Sat, 2 Aug 2003 16:53:08 +0000
Subject: [PATCH] -invented NtUserGetQueueStatus -added queue bits (currently
 unused)

svn path=/trunk/; revision=5383
---
 reactos/subsys/win32k/ntuser/message.c  | 24 +++++++++++++++++++++++-
 reactos/subsys/win32k/ntuser/msgqueue.c | 23 ++++++++++++++++++++++-
 2 files changed, 45 insertions(+), 2 deletions(-)

diff --git a/reactos/subsys/win32k/ntuser/message.c b/reactos/subsys/win32k/ntuser/message.c
index a4f94332563..cf0a6bd1d84 100644
--- a/reactos/subsys/win32k/ntuser/message.c
+++ b/reactos/subsys/win32k/ntuser/message.c
@@ -16,7 +16,7 @@
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
-/* $Id: message.c,v 1.25 2003/07/25 23:53:36 dwelch Exp $
+/* $Id: message.c,v 1.26 2003/08/02 16:53:08 gdalsnes Exp $
  *
  * COPYRIGHT:        See COPYING in the top level directory
  * PROJECT:          ReactOS kernel
@@ -592,4 +592,26 @@ NtUserWaitMessage(VOID)
   return W32kWaitMessage(NULL, 0, 0);
 }
 
+
+DWORD STDCALL
+NtUserGetQueueStatus(BOOL ClearChanges)
+{
+   PUSER_MESSAGE_QUEUE Queue;
+   DWORD Result;
+
+   Queue = PsGetWin32Thread()->MessageQueue;
+
+   ExAcquireFastMutex(&Queue->Lock);
+
+   Result = MAKELONG(Queue->ChangedBits, Queue->WakeBits);
+   if (ClearChanges)
+   {
+      Queue->ChangedBits = 0;
+   }
+
+   ExReleaseFastMutex(&Queue->Lock);
+
+   return Result;
+}
+
 /* EOF */
diff --git a/reactos/subsys/win32k/ntuser/msgqueue.c b/reactos/subsys/win32k/ntuser/msgqueue.c
index 5e84085090f..2fc706a4a13 100644
--- a/reactos/subsys/win32k/ntuser/msgqueue.c
+++ b/reactos/subsys/win32k/ntuser/msgqueue.c
@@ -16,7 +16,7 @@
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
-/* $Id: msgqueue.c,v 1.12 2003/07/27 11:54:42 dwelch Exp $
+/* $Id: msgqueue.c,v 1.13 2003/08/02 16:53:08 gdalsnes Exp $
  *
  * COPYRIGHT:        See COPYING in the top level directory
  * PROJECT:          ReactOS kernel
@@ -60,6 +60,27 @@ static PAGED_LOOKASIDE_LIST MessageLookasideList;
 
 /* FUNCTIONS *****************************************************************/
 
+/* check the queue status */
+inline BOOL MsqIsSignaled( PUSER_MESSAGE_QUEUE Queue )
+{
+    return ((Queue->WakeBits & Queue->WakeMask) || (Queue->ChangedBits & Queue->ChangedMask));
+}
+
+/* set some queue bits */
+inline VOID MsqSetQueueBits( PUSER_MESSAGE_QUEUE Queue, WORD Bits )
+{
+    Queue->WakeBits |= Bits;
+    Queue->ChangedBits |= Bits;
+    if (MsqIsSignaled( Queue )) KeSetEvent(&Queue->NewMessages, IO_NO_INCREMENT, FALSE);
+}
+
+/* clear some queue bits */
+inline VOID MsqClearQueueBits( PUSER_MESSAGE_QUEUE Queue, WORD Bits )
+{
+    Queue->WakeBits &= ~Bits;
+    Queue->ChangedBits &= ~Bits;
+}
+
 VOID FASTCALL
 MsqIncPaintCountQueue(PUSER_MESSAGE_QUEUE Queue)
 {