[jimtabor] 56832: [Win32k] - Fix assert with WinSnap. Added support functions to be used later.

Author: jimtabor
Date: Wed Jul  4 22:59:27 2012
New Revision: 56832

URL: http://svn.reactos.org/svn/reactos?rev=56832&view=rev
Log:
[Win32k]
- Fix assert with WinSnap. Added support functions to be used later.

Modified:
    trunk/reactos/win32ss/user/ntuser/desktop.c
    trunk/reactos/win32ss/user/ntuser/desktop.h
    trunk/reactos/win32ss/user/ntuser/hook.c

Modified: trunk/reactos/win32ss/user/ntuser/desktop.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/user/ntuser/desktop...
==============================================================================
--- trunk/reactos/win32ss/user/ntuser/desktop.c [iso-8859-1] (original)
+++ trunk/reactos/win32ss/user/ntuser/desktop.c [iso-8859-1] Wed Jul  4 22:59:27 2012
@@ -466,6 +466,23 @@
    }
    // Only one Q can have active foreground even when there are more than one desktop.
    if (NewQueue) gpqForeground = pdo->ActiveMessageQueue;
+   else gpqForeground = NULL;
+}
+
+PWND FASTCALL
+IntGetThreadDesktopWindow(PTHREADINFO pti)
+{
+   if (!pti) pti = PsGetCurrentThreadWin32Thread();
+   if (pti->pDeskInfo) return pti->pDeskInfo->spwnd;
+   return NULL;
+}
+
+PWND FASTCALL co_GetDesktopWindow(PWND pWnd)
+{
+   if (pWnd->head.rpdesk &&
+       pWnd->head.rpdesk->pDeskInfo)
+      return pWnd->head.rpdesk->pDeskInfo->spwnd;
+   return NULL;
 }

HWND FASTCALL IntGetDesktopWindow(VOID)
@@ -529,6 +546,21 @@
 }

/* PUBLIC FUNCTIONS ***********************************************************/
+
+LRESULT FASTCALL
+DesktopWindowProc(PWND Wnd, UINT Msg, WPARAM wParam, LPARAM lParam)
+{
+   switch (Msg)   
+   {
+      case WM_NCCREATE:
+         if (!Wnd->fnid)
+         {
+            Wnd->fnid = FNID_DESKTOP;
+         }
+         return (LRESULT)TRUE;
+   }
+   return 0;
+}

HDC FASTCALL
 UserGetDesktopDC(ULONG DcType, BOOL EmptyDC, BOOL ValidatehWnd)
@@ -1335,16 +1367,17 @@
 {
    PDESKTOP pdesk;
    NTSTATUS Status;
-   HDESK hdesk;
-
-   TRACE("Enter NtUserOpenInputDesktop\n");
+   HDESK hdesk = NULL;
+
+   UserEnterExclusive();
+   TRACE("Enter NtUserOpenInputDesktop InputDesktopHandle 0x%x\n",InputDesktopHandle);

/* Get a pointer to the desktop object */
    Status = IntValidateDesktopHandle(InputDesktopHandle, UserMode, 0, &pdesk);
    if (!NT_SUCCESS(Status))
    {
-      TRACE("Validation of input desktop handle (0x%X) failed\n", InputDesktop);
-      return NULL;
+      ERR("Validation of input desktop handle (0x%X) failed\n", InputDesktopHandle);
+      goto Exit;
    }

/* Create a new handle to the object */
@@ -1363,10 +1396,11 @@
    {
        ERR("Failed to open input desktop object\n");
        SetLastNtError(Status);
-       return NULL;
-   }
-
+       goto Exit;
+   }
+Exit:
    TRACE("NtUserOpenInputDesktop returning 0x%x\n",hdesk);
+   UserLeave();
    return hdesk;
 }

@@ -1397,15 +1431,12 @@
 {
    PDESKTOP pdesk;
    NTSTATUS Status;
-   PTHREADINFO pti;
    DECLARE_RETURN(BOOL);
-
-   pti = PsGetCurrentThreadWin32Thread();

TRACE("NtUserCloseDesktop called (0x%x)\n", hDesktop);
    UserEnterExclusive();

-   if( hDesktop == pti->hdesk || hDesktop == pti->ppi->hdeskStartup)
+   if( hDesktop == gptiCurrent->hdesk || hDesktop == gptiCurrent->ppi->hdeskStartup)
    {
        ERR("Attempted to close thread desktop\n");
        EngSetLastError(ERROR_BUSY);
@@ -1526,7 +1557,7 @@
    /* Set the global state. */
    InputDesktop = pdesk;
    InputDesktopHandle = hdesk;
-
+   TRACE("SwitchDesktop InputDesktopHandle 0x%x\n",InputDesktopHandle);
    ObDereferenceObject(pdesk);

RETURN(TRUE);
@@ -1780,6 +1811,13 @@
         return FALSE;
     }

+    /* Desktop is being re-set so clear out foreground. */
+    if (pti->rpdesk != pdesk && pti->MessageQueue == gpqForeground)
+    {
+       // Like above, there shouldn't be any windows, hooks or anything active on this threads desktop!
+       IntSetFocusMessageQueue(NULL);
+    }
+
     /* Before doing the switch, map the new desktop heap and allocate the new pcti */
     if(pdesk != NULL)
     {
@@ -1846,6 +1884,8 @@
         else
         {
             RtlZeroMemory(pctiNew, sizeof(CLIENTTHREADINFO));
+            pci->fsHooks = pti->fsHooks;
+            pci->dwTIFlags = pti->TIF_flags;
         }
     }
     else

Modified: trunk/reactos/win32ss/user/ntuser/desktop.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/user/ntuser/desktop...
==============================================================================
--- trunk/reactos/win32ss/user/ntuser/desktop.h [iso-8859-1] (original)
+++ trunk/reactos/win32ss/user/ntuser/desktop.h [iso-8859-1] Wed Jul  4 22:59:27 2012
@@ -275,4 +275,8 @@
     return NULL;
 }

+PWND FASTCALL IntGetThreadDesktopWindow(PTHREADINFO);
+PWND FASTCALL co_GetDesktopWindow(PWND);
+
+LRESULT FASTCALL DesktopWindowProc(PWND, UINT, WPARAM, LPARAM);
 /* EOF */

Modified: trunk/reactos/win32ss/user/ntuser/hook.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/user/ntuser/hook.c?...
==============================================================================
--- trunk/reactos/win32ss/user/ntuser/hook.c [iso-8859-1] (original)
+++ trunk/reactos/win32ss/user/ntuser/hook.c [iso-8859-1] Wed Jul  4 22:59:27 2012
@@ -1048,7 +1048,7 @@
           pti->fsHooks &= ~HOOKID_TO_FLAG(HookId);
           _SEH2_TRY
           {
-             GetWin32ClientInfo()->fsHooks = pti->fsHooks;
+             pti->pClientInfo->fsHooks = pti->fsHooks;
           }
           _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
           {
@@ -1106,6 +1106,7 @@
          }
       }
       pti->fsHooks = 0;
+      pti->pClientInfo->fsHooks = 0;
    }
 // Global search based on Thread and cleanup.
    if (pdo->pDeskInfo->fsHooks)