[ros-diffs] [mjmartin] 47126: [win32k] - Modify how non-queued messages are send that originate from the Win23k subsystem. Non-queued messages must go directly to the windows WNDPROC and not through the message pump (previews ROS behavior). More importantly sending these messages must not cause the sending thread to block waiting for a reply. - Add a messaging handling function that always sends message from Win32k to the windows thread without waiting. This will also allow the implementation of message cal

Author: mjmartin
Date: Sat May  8 17:49:02 2010
New Revision: 47126

URL: http://svn.reactos.org/svn/reactos?rev=47126&view=rev
Log:
[win32k]
- Modify how non-queued messages are send that originate from the Win23k subsystem. 
Non-queued messages must go directly to the windows WNDPROC and not through the message
pump (previews ROS behavior). 
More importantly sending these messages must not cause the sending thread to block waiting
for a reply.
- Add a messaging handling function that always sends message from Win32k to the windows
thread without waiting. 
This will also allow the implementation of message call back later.
- Modify PackParam and UnpackParam to accept a BOOL value to determine whether LParam
needs to be allocated from NonPagedPool. 
Use with new message handling as if message sent to another thread have any pointers they
must be allocated from NonPagedPool.
- Fixed broken logic in can_active_window function and co_WinPosShowWindow.
- Fixed broken logic in co_IntSendActivateMessages. 
The WM_ACTIVATEAPP message was being sent to every window belonging to the desktop twice.
Once with flag saying window was activated and again with deactivated.
- These changes should fix bugs #969, #3171, #4501, #4676, #4677, #4948.

Modified:
    trunk/reactos/subsystems/win32/win32k/include/msgqueue.h
    trunk/reactos/subsystems/win32/win32k/ntuser/focus.c
    trunk/reactos/subsystems/win32/win32k/ntuser/message.c
    trunk/reactos/subsystems/win32/win32k/ntuser/msgqueue.c
    trunk/reactos/subsystems/win32/win32k/ntuser/winpos.c

Modified: trunk/reactos/subsystems/win32/win32k/include/msgqueue.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/in…
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/include/msgqueue.h [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/win32k/include/msgqueue.h [iso-8859-1] Sat May  8
17:49:02 2010
@@ -6,6 +6,7 @@
 #define MSQ_NORMAL      0
 #define MSQ_ISHOOK      1
 #define MSQ_ISEVENT     2
+#define MSQ_SENTNOWAIT  0x80000000
 
 typedef struct _USER_MESSAGE
 {
@@ -28,6 +29,7 @@
   /* entry in the dispatching list of the sender's message queue */
   LIST_ENTRY DispatchingListEntry;
   INT HookMessage;
+  BOOL HasPackedLParam;
 } USER_SENT_MESSAGE, *PUSER_SENT_MESSAGE;
 
 typedef struct _USER_SENT_MESSAGE_NOTIFY
@@ -184,6 +186,20 @@
                       UINT uFlags,
                       UINT uTimeout,
                       ULONG_PTR *uResult);
+
+LRESULT FASTCALL co_IntSendMessageNoWait(HWND hWnd,
+                        UINT Msg,
+                        WPARAM wParam,
+                        LPARAM lParam);
+LRESULT FASTCALL
+co_IntSendMessageWithCallBack(HWND hWnd,
+                              UINT Msg,
+                              WPARAM wParam,
+                              LPARAM lParam,
+                              SENDASYNCPROC CompletionCallback,
+                              ULONG_PTR CompletionCallbackContext,
+                              ULONG_PTR *uResult);
+
 LRESULT FASTCALL
 IntDispatchMessage(MSG* Msg);
 BOOL FASTCALL

Modified: trunk/reactos/subsystems/win32/win32k/ntuser/focus.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/nt…
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/ntuser/focus.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/win32k/ntuser/focus.c [iso-8859-1] Sat May  8 17:49:02
2010
@@ -53,8 +53,8 @@
 {
    if (hWndPrev)
    {
-      co_IntPostOrSendMessage(hWndPrev, WM_NCACTIVATE, FALSE, 0);
-      co_IntPostOrSendMessage(hWndPrev, WM_ACTIVATE,
+      co_IntSendMessageNoWait(hWndPrev, WM_NCACTIVATE, FALSE, 0);
+      co_IntSendMessageNoWait(hWndPrev, WM_ACTIVATE,
                               MAKEWPARAM(WA_INACTIVE, UserGetWindowLong(hWndPrev,
GWL_STYLE, FALSE) & WS_MINIMIZE),
                               (LPARAM)hWnd);
    }
@@ -105,38 +105,19 @@
 
       if (Window && WindowPrev)
       {
-         PWINDOW_OBJECT cWindow;
-         HWND *List, *phWnd;
          HANDLE OldTID = IntGetWndThreadId(WindowPrev);
          HANDLE NewTID = IntGetWndThreadId(Window);
 
- DPRINT("SendActiveMessage Old -> %x, New -> %x\n", OldTID, NewTID);
+         DPRINT1("SendActiveMessage Old -> %x, New -> %x\n", OldTID,
NewTID);
+         if (Window->Wnd->style & WS_MINIMIZE)
+         {
+            DPRINT1("Widow was nminimized\n");
+         }
 
          if (OldTID != NewTID)
          {
-            List = IntWinListChildren(UserGetWindowObject(IntGetDesktopWindow()));
-            if (List)
-            {
-               for (phWnd = List; *phWnd; ++phWnd)
-               {
-                  cWindow = UserGetWindowObject(*phWnd);
-                  if (cWindow && (IntGetWndThreadId(cWindow) == OldTID))
-                  {  // FALSE if the window is being deactivated,
-                     // ThreadId that owns the window being activated.
-                    co_IntPostOrSendMessage(*phWnd, WM_ACTIVATEAPP, FALSE,
(LPARAM)NewTID);
-                  }
-               }
-               for (phWnd = List; *phWnd; ++phWnd)
-               {
-                  cWindow = UserGetWindowObject(*phWnd);
-                  if (cWindow && (IntGetWndThreadId(cWindow) == NewTID))
-                  { // TRUE if the window is being activated,
-                    // ThreadId that owns the window being deactivated.
-                    co_IntPostOrSendMessage(*phWnd, WM_ACTIVATEAPP, TRUE,
(LPARAM)OldTID);
-                  }
-               }
-               ExFreePool(List);
-            }
+            co_IntSendMessageNoWait(hWndPrev, WM_ACTIVATEAPP, FALSE, (LPARAM)NewTID);
+            co_IntSendMessageNoWait(hWnd, WM_ACTIVATEAPP, TRUE, (LPARAM)OldTID);
          }
          UserDerefObjectCo(WindowPrev); // Now allow the previous window to die.
       }
@@ -144,10 +125,9 @@
       UserDerefObjectCo(Window);
 
       /* FIXME: IntIsWindow */
-
-      co_IntPostOrSendMessage(hWnd, WM_NCACTIVATE, (WPARAM)(hWnd ==
UserGetForegroundWindow()), 0);
+      co_IntSendMessageNoWait(hWnd, WM_NCACTIVATE, (WPARAM)(hWnd ==
UserGetForegroundWindow()), 0);
       /* FIXME: WA_CLICKACTIVE */
-      co_IntPostOrSendMessage(hWnd, WM_ACTIVATE,
+      co_IntSendMessageNoWait(hWnd, WM_ACTIVATE,
                               MAKEWPARAM(MouseActivate ? WA_CLICKACTIVE : WA_ACTIVE,
                                          UserGetWindowLong(hWnd, GWL_STYLE, FALSE) &
WS_MINIMIZE),
                               (LPARAM)hWndPrev);
@@ -241,7 +221,9 @@
    co_IntSendDeactivateMessages(hWndPrev, hWnd);
    co_IntSendKillFocusMessages(hWndFocusPrev, hWndFocus);
 
+
    IntSetFocusMessageQueue(Window->pti->MessageQueue);
+
    if (Window->pti->MessageQueue)
    {
       Window->pti->MessageQueue->ActiveWindow = hWnd;

Modified: trunk/reactos/subsystems/win32/win32k/ntuser/message.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/nt…
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/ntuser/message.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/win32k/ntuser/message.c [iso-8859-1] Sat May  8
17:49:02 2010
@@ -165,7 +165,7 @@
 }
 
 static NTSTATUS
-PackParam(LPARAM *lParamPacked, UINT Msg, WPARAM wParam, LPARAM lParam)
+PackParam(LPARAM *lParamPacked, UINT Msg, WPARAM wParam, LPARAM lParam, BOOL
NonPagedPoolNeeded)
 {
    NCCALCSIZE_PARAMS *UnpackedNcCalcsize;
    NCCALCSIZE_PARAMS *PackedNcCalcsize;
@@ -173,28 +173,34 @@
    CREATESTRUCTW *PackedCs;
    PUNICODE_STRING WindowName;
    PUNICODE_STRING ClassName;
+   POOL_TYPE PoolType;
    UINT Size;
    PCHAR CsData;
 
    *lParamPacked = lParam;
+
+    if (NonPagedPoolNeeded)
+       PoolType = NonPagedPool;
+    else
+       PoolType = PagedPool;
+
    if (WM_NCCALCSIZE == Msg && wParam)
    {
+
       UnpackedNcCalcsize = (NCCALCSIZE_PARAMS *) lParam;
-      if (UnpackedNcCalcsize->lppos != (PWINDOWPOS) (UnpackedNcCalcsize + 1))
-      {
-         PackedNcCalcsize = ExAllocatePoolWithTag(PagedPool,
-                            sizeof(NCCALCSIZE_PARAMS) + sizeof(WINDOWPOS),
-                            TAG_MSG);
-         if (NULL == PackedNcCalcsize)
-         {
-            DPRINT1("Not enough memory to pack lParam\n");
-            return STATUS_NO_MEMORY;
-         }
-         RtlCopyMemory(PackedNcCalcsize, UnpackedNcCalcsize, sizeof(NCCALCSIZE_PARAMS));
-         PackedNcCalcsize->lppos = (PWINDOWPOS) (PackedNcCalcsize + 1);
-         RtlCopyMemory(PackedNcCalcsize->lppos, UnpackedNcCalcsize->lppos,
sizeof(WINDOWPOS));
-         *lParamPacked = (LPARAM) PackedNcCalcsize;
-      }
+      PackedNcCalcsize = ExAllocatePoolWithTag(PoolType,
+                         sizeof(NCCALCSIZE_PARAMS) + sizeof(WINDOWPOS),
+                         TAG_MSG);
+
+      if (NULL == PackedNcCalcsize)
+      {
+         DPRINT1("Not enough memory to pack lParam\n");
+         return STATUS_NO_MEMORY;
+      }
+      RtlCopyMemory(PackedNcCalcsize, UnpackedNcCalcsize, sizeof(NCCALCSIZE_PARAMS));
+      PackedNcCalcsize->lppos = (PWINDOWPOS) (PackedNcCalcsize + 1);
+      RtlCopyMemory(PackedNcCalcsize->lppos, UnpackedNcCalcsize->lppos,
sizeof(WINDOWPOS));
+      *lParamPacked = (LPARAM) PackedNcCalcsize;
    }
    else if (WM_CREATE == Msg || WM_NCCREATE == Msg)
    {
@@ -210,7 +216,7 @@
       {
          Size += sizeof(WCHAR) + ClassName->Length + sizeof(WCHAR);
       }
-      PackedCs = ExAllocatePoolWithTag(PagedPool, Size, TAG_MSG);
+      PackedCs = ExAllocatePoolWithTag(PoolType, Size, TAG_MSG);
       if (NULL == PackedCs)
       {
          DPRINT1("Not enough memory to pack lParam\n");
@@ -244,11 +250,28 @@
       *lParamPacked = (LPARAM) PackedCs;
    }
 
+   else if (PoolType == NonPagedPool)
+   {
+      PMSGMEMORY MsgMemoryEntry;
+      PVOID PackedData;
+
+      MsgMemoryEntry = FindMsgMemory(Msg);
+
+      if ((!MsgMemoryEntry) || (MsgMemoryEntry->Size < 0))
+      {
+         /* Keep previous behavior */
+         return STATUS_SUCCESS;
+      }
+      PackedData = ExAllocatePoolWithTag(NonPagedPool, MsgMemorySize(MsgMemoryEntry,
wParam, lParam), TAG_MSG);
+      RtlCopyMemory(PackedData, (PVOID)lParam, MsgMemorySize(MsgMemoryEntry, wParam,
lParam));
+      *lParamPacked = (LPARAM)PackedData;
+   }
+
    return STATUS_SUCCESS;
 }
 
 static NTSTATUS
-UnpackParam(LPARAM lParamPacked, UINT Msg, WPARAM wParam, LPARAM lParam)
+UnpackParam(LPARAM lParamPacked, UINT Msg, WPARAM wParam, LPARAM lParam, BOOL
NonPagedPoolUsed)
 {
    NCCALCSIZE_PARAMS *UnpackedParams;
    NCCALCSIZE_PARAMS *PackedParams;
@@ -275,6 +298,23 @@
    {
       ExFreePool((PVOID) lParamPacked);
 
+      return STATUS_SUCCESS;
+   }
+   else if (NonPagedPoolUsed)
+   {
+      PMSGMEMORY MsgMemoryEntry;
+      MsgMemoryEntry = FindMsgMemory(Msg);
+      if (MsgMemoryEntry->Size < 0)
+      {
+         /* Keep previous behavior */
+         return STATUS_INVALID_PARAMETER;
+      }
+
+      if (MsgMemory->Flags == MMS_FLAG_READWRITE)
+      {
+         //RtlCopyMemory((PVOID)lParam, (PVOID)lParamPacked, MsgMemory->Size);
+      }
+      ExFreePool((PVOID) lParamPacked);
       return STATUS_SUCCESS;
    }
 
@@ -394,7 +434,7 @@
      lParamBufferSize = MsgMemorySize(MsgMemoryEntry, pMsg->wParam, pMsg->lParam);
   }
 
-  if (! NT_SUCCESS(PackParam(&lParamPacked, pMsg->message, pMsg->wParam,
pMsg->lParam)))
+  if (! NT_SUCCESS(PackParam(&lParamPacked, pMsg->message, pMsg->wParam,
pMsg->lParam, FALSE)))
   {
      DPRINT1("Failed to pack message parameters\n");
      return 0;
@@ -408,7 +448,7 @@
                                  lParamPacked,
                                  lParamBufferSize);
 
-  if (! NT_SUCCESS(UnpackParam(lParamPacked, pMsg->message, pMsg->wParam,
pMsg->lParam)))
+  if (! NT_SUCCESS(UnpackParam(lParamPacked, pMsg->message, pMsg->wParam,
pMsg->lParam, FALSE)))
   {
      DPRINT1("Failed to unpack message parameters\n");
   }
@@ -1372,7 +1412,7 @@
          lParamBufferSize = MsgMemorySize(MsgMemoryEntry, wParam, lParam);
       }
 
-      if (! NT_SUCCESS(PackParam(&lParamPacked, Msg, wParam, lParam)))
+      if (! NT_SUCCESS(PackParam(&lParamPacked, Msg, wParam, lParam, FALSE)))
       {
           DPRINT1("Failed to pack message parameters\n");
           RETURN( FALSE);
@@ -1392,7 +1432,7 @@
 
       IntCallWndProcRet( Window, hWnd, Msg, wParam, lParam, (LRESULT *)uResult);
 
-      if (! NT_SUCCESS(UnpackParam(lParamPacked, Msg, wParam, lParam)))
+      if (! NT_SUCCESS(UnpackParam(lParamPacked, Msg, wParam, lParam, FALSE)))
       {
          DPRINT1("Failed to unpack message parameters\n");
          RETURN( TRUE);
@@ -1499,6 +1539,148 @@
    return (LRESULT) TRUE;
 }
 
+LRESULT FASTCALL co_IntSendMessageNoWait(HWND hWnd,
+                                         UINT Msg,
+                                         WPARAM wParam,
+                                         LPARAM lParam)
+{
+   ULONG_PTR Result = 0;
+   co_IntSendMessageWithCallBack(hWnd,
+                                 Msg,
+                                 wParam,
+                                 lParam,
+                                 NULL,
+                                 0,
+                                 &Result);
+   return Result;
+}
+
+LRESULT FASTCALL
+co_IntSendMessageWithCallBack( HWND hWnd,
+                               UINT Msg,
+                               WPARAM wParam,
+                               LPARAM lParam,
+                               SENDASYNCPROC CompletionCallback,
+                               ULONG_PTR CompletionCallbackContext,
+                               ULONG_PTR *uResult)
+{
+   ULONG_PTR Result;
+   PWINDOW_OBJECT Window = NULL;
+   PMSGMEMORY MsgMemoryEntry;
+   INT lParamBufferSize;
+   LPARAM lParamPacked;
+   PTHREADINFO Win32Thread;
+   DECLARE_RETURN(LRESULT);
+   USER_REFERENCE_ENTRY Ref;
+   PUSER_SENT_MESSAGE Message;
+
+   if (!(Window = UserGetWindowObject(hWnd)))
+   {
+       RETURN(FALSE);
+   }
+
+   UserRefObjectCo(Window, &Ref);
+
+   if (Window->state & WINDOWSTATUS_DESTROYING)
+   {
+      /* FIXME - last error? */
+      DPRINT1("Attempted to send message to window 0x%x that is being
destroyed!\n", hWnd);
+      RETURN(FALSE);
+   }
+
+   Win32Thread = PsGetCurrentThreadWin32Thread();
+
+   IntCallWndProc( Window, hWnd, Msg, wParam, lParam);
+
+   if (Win32Thread == NULL)
+   {
+     ASSERT(FALSE);
+     RETURN(FALSE);
+   }
+
+   if (Win32Thread->TIF_flags & TIF_INCLEANUP)
+   {
+      /* Never send messages to exiting threads */
+       RETURN(FALSE);
+   }
+
+   /* See if this message type is present in the table */
+   MsgMemoryEntry = FindMsgMemory(Msg);
+   if (NULL == MsgMemoryEntry)
+   {
+      lParamBufferSize = -1;
+   }
+   else
+   {
+      lParamBufferSize = MsgMemorySize(MsgMemoryEntry, wParam, lParam);
+   }
+
+   if (! NT_SUCCESS(PackParam(&lParamPacked, Msg, wParam, lParam,
Window->pti->MessageQueue != Win32Thread->MessageQueue)))
+   {
+       DPRINT1("Failed to pack message parameters\n");
+       RETURN( FALSE);
+   }
+
+   /* If this is not a callback and it can be sent now, then send it. */
+   if ((Window->pti->MessageQueue == Win32Thread->MessageQueue) &&
(CompletionCallback == NULL))
+   {
+
+      Result = (ULONG_PTR)co_IntCallWindowProc( Window->Wnd->lpfnWndProc,
+                                               !Window->Wnd->Unicode,
+                                                hWnd,
+                                                Msg,
+                                                wParam,
+                                                lParamPacked,
+                                                lParamBufferSize );
+      if(uResult)
+      {
+         *uResult = Result;
+      }
+   }
+
+   IntCallWndProcRet( Window, hWnd, Msg, wParam, lParam, (LRESULT *)uResult);
+
+   if (Window->pti->MessageQueue == Win32Thread->MessageQueue)
+   {
+      if (! NT_SUCCESS(UnpackParam(lParamPacked, Msg, wParam, lParam, FALSE)))
+      {
+         DPRINT1("Failed to unpack message parameters\n");
+         RETURN(TRUE);
+      }
+      RETURN(TRUE);
+   }
+
+   if(!(Message = ExAllocatePoolWithTag(NonPagedPool, sizeof(USER_SENT_MESSAGE),
TAG_USRMSG)))
+   {
+      DPRINT1("MsqSendMessage(): Not enough memory to allocate a message");
+      return STATUS_INSUFFICIENT_RESOURCES;
+   }
+
+   Message->Msg.hwnd = hWnd;
+   Message->Msg.message = Msg;
+   Message->Msg.wParam = wParam;
+   Message->Msg.lParam = lParamPacked;
+   Message->CompletionEvent = NULL;
+   Message->Result = 0;
+   Message->SenderQueue = Win32Thread->MessageQueue;
+   IntReferenceMessageQueue(Message->SenderQueue);
+   IntReferenceMessageQueue(Window->pti->MessageQueue);
+   Message->CompletionCallback = CompletionCallback;
+   Message->CompletionCallbackContext = CompletionCallbackContext;
+   Message->HookMessage = MSQ_NORMAL | MSQ_SENTNOWAIT;
+   Message->HasPackedLParam = (lParamBufferSize > 0);
+
+   InsertTailList(&Window->pti->MessageQueue->SentMessagesListHead,
&Message->ListEntry);
+   InsertTailList(&Win32Thread->MessageQueue->DispatchingMessagesHead,
&Message->DispatchingListEntry);
+   IntDereferenceMessageQueue(Window->pti->MessageQueue);
+   IntDereferenceMessageQueue(Message->SenderQueue);
+
+   RETURN(TRUE);
+
+CLEANUP:
+   if (Window) UserDerefObjectCo(Window);
+   END_CLEANUP;
+}
 
 /* This function posts a message if the destination's message queue belongs to
    another thread, otherwise it sends the message. It does not support broadcast

Modified: trunk/reactos/subsystems/win32/win32k/ntuser/msgqueue.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/nt…
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/ntuser/msgqueue.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/win32k/ntuser/msgqueue.c [iso-8859-1] Sat May  8
17:49:02 2010
@@ -969,7 +969,7 @@
 
    /* remove the message from the dispatching list, so lock the sender's message
queue */
    SenderReturned = (Message->DispatchingListEntry.Flink == NULL);
-   if(!SenderReturned)
+   if (!SenderReturned)
    {
       /* only remove it from the dispatching list if not already removed by a timeout */
       RemoveEntryList(&Message->DispatchingListEntry);
@@ -981,6 +981,12 @@
    if (Message->Result != NULL)
    {
       *Message->Result = Result;
+   }
+
+   if (Message->HasPackedLParam == TRUE)
+   {
+      if (Message->Msg.lParam)
+         ExFreePool((PVOID)Message->Msg.lParam);
    }
 
    /* Notify the sender. */
@@ -1010,9 +1016,12 @@
 
 Notified:
 
-   /* dereference both sender and our queue */
-   IntDereferenceMessageQueue(MessageQueue);
-   IntDereferenceMessageQueue(Message->SenderQueue);
+   /* Only if it is not a no wait message */
+   if (!(Message->HookMessage & MSQ_SENTNOWAIT))
+   {
+      IntDereferenceMessageQueue(Message->SenderQueue);
+      IntDereferenceMessageQueue(MessageQueue);
+   }
 
    /* free the message */
    ExFreePool(Message);
@@ -1147,6 +1156,7 @@
    IntReferenceMessageQueue(ThreadQueue);
    Message->CompletionCallback = NULL;
    Message->HookMessage = HookMessage;
+   Message->HasPackedLParam = FALSE;
 
    IntReferenceMessageQueue(MessageQueue);
 

Modified: trunk/reactos/subsystems/win32/win32k/ntuser/winpos.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/nt…
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/ntuser/winpos.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/win32k/ntuser/winpos.c [iso-8859-1] Sat May  8 17:49:02
2010
@@ -69,9 +69,6 @@
    return TRUE;
 }
 
-
-
-
 BOOL FASTCALL
 UserGetClientOrigin(PWINDOW_OBJECT Window, LPPOINT Point)
 {
@@ -120,8 +117,13 @@
     style = Wnd->Wnd->style;
     if (!(style & WS_VISIBLE) &&
         Wnd->pti->pEThread->ThreadsProcess != CsrProcess) return FALSE;
+    if ((style & WS_MINIMIZE) &&
+        Wnd->pti->pEThread->ThreadsProcess != CsrProcess) return FALSE;
     if ((style & (WS_POPUP|WS_CHILD)) == WS_CHILD) return FALSE;
-    return !(style & WS_DISABLED);
+    return TRUE;
+    /* FIXME: This window could be disable  because the child that closed
+              was a popup. */
+    //return !(style & WS_DISABLED);
 }
 
 
@@ -312,7 +314,7 @@
 
       if (Wnd->style & WS_MINIMIZE)
       {
-         if (!co_IntSendMessage(Window->hSelf, WM_QUERYOPEN, 0, 0))
+         if (!co_IntSendMessageNoWait(Window->hSelf, WM_QUERYOPEN, 0, 0))
          {
             return(SWP_NOSIZE | SWP_NOMOVE);
          }
@@ -531,7 +533,7 @@
       params.lppos = &winposCopy;
       winposCopy = *WinPos;
 
-      wvrFlags = co_IntSendMessage(Window->hSelf, WM_NCCALCSIZE, TRUE, (LPARAM)
&params);
+      wvrFlags = co_IntSendMessageNoWait(Window->hSelf, WM_NCCALCSIZE, TRUE, (LPARAM)
&params);
 
       /* If the application send back garbage, ignore it */
       if (params.rgrc[0].left <= params.rgrc[0].right &&
@@ -590,7 +592,7 @@
 
    if (!(WinPos->flags & SWP_NOSENDCHANGING))
    {
-      co_IntPostOrSendMessage(Window->hSelf, WM_WINDOWPOSCHANGING, 0, (LPARAM)
WinPos);
+      co_IntSendMessageNoWait(Window->hSelf, WM_WINDOWPOSCHANGING, 0, (LPARAM)
WinPos);
    }
 
    *WindowRect = Wnd->rcWindow;
@@ -1320,7 +1322,7 @@
       {
          if ((Window->Wnd->style & (WS_CHILD | WS_POPUP)) == WS_CHILD)
          {
-            co_IntSendMessage(WinPos.hwnd, WM_CHILDACTIVATE, 0, 0);
+            co_IntSendMessageNoWait(WinPos.hwnd, WM_CHILDACTIVATE, 0, 0);
          }
          else
          {
@@ -1330,7 +1332,7 @@
    }
 
    if ((WinPos.flags & SWP_AGG_STATUSFLAGS) != SWP_AGG_NOPOSCHANGE)
-      co_IntPostOrSendMessage(WinPos.hwnd, WM_WINDOWPOSCHANGED, 0, (LPARAM)
&WinPos);
+      co_IntSendMessageNoWait(WinPos.hwnd, WM_WINDOWPOSCHANGED, 0, (LPARAM)
&WinPos);
 
    return TRUE;
 }
@@ -1343,7 +1345,7 @@
    ASSERT_REFS_CO(Window);
 
    *ClientRect = *WindowRect;
-   Result = co_IntSendMessage(Window->hSelf, WM_NCCALCSIZE, FALSE, (LPARAM)
ClientRect);
+   Result = co_IntSendMessageNoWait(Window->hSelf, WM_NCCALCSIZE, FALSE, (LPARAM)
ClientRect);
 
    FixClientRect(ClientRect, WindowRect);
 
@@ -1462,7 +1464,7 @@
 
    if (ShowFlag != WasVisible)
    {
-      co_IntSendMessage(Window->hSelf, WM_SHOWWINDOW, ShowFlag, 0);
+      co_IntSendMessageNoWait(Window->hSelf, WM_SHOWWINDOW, ShowFlag, 0);
    }
 
    /* We can't activate a child window */
@@ -1476,7 +1478,7 @@
                          ? HWND_TOPMOST : HWND_TOP,
                          NewPos.left, NewPos.top, NewPos.right, NewPos.bottom,
LOWORD(Swp));
 
-   if (Cmd == SW_HIDE)
+   if ((Cmd == SW_HIDE) || (Cmd == SW_MINIMIZE))
    {
       PWINDOW_OBJECT ThreadFocusWindow;
 
@@ -1520,12 +1522,12 @@
          wParam = SIZE_MINIMIZED;
       }
 
-      co_IntSendMessage(Window->hSelf, WM_SIZE, wParam,
+      co_IntSendMessageNoWait(Window->hSelf, WM_SIZE, wParam,
                         MAKELONG(Wnd->rcClient.right -
                                  Wnd->rcClient.left,
                                  Wnd->rcClient.bottom -
                                  Wnd->rcClient.top));
-      co_IntSendMessage(Window->hSelf, WM_MOVE, 0,
+      co_IntSendMessageNoWait(Window->hSelf, WM_MOVE, 0,
                         MAKELONG(Wnd->rcClient.left,
                                  Wnd->rcClient.top));
       IntEngWindowChanged(Window, WOC_RGN_CLIENT);