user32: Invalidate the DCEs while still holding the window lock in SetWindowPos.

dlls/user32/painting.c

@@ -399,40 +399,38 @@ static void make_dc_dirty( struct dce *dce )
  * rectangle. In addition, pWnd->parent DCEs may need to be updated if
  * DCX_CLIPCHILDREN flag is set.
  */
-void invalidate_dce( HWND hwnd, const RECT *extra_rect )
+void invalidate_dce( WND *win, const RECT *extra_rect )
 {
     RECT window_rect;
     struct dce *dce;
-    HWND hwndScope = GetAncestor( hwnd, GA_PARENT );
 
-    if (!hwndScope) return;
+    if (!win->parent) return;
 
-    GetWindowRect( hwnd, &window_rect );
+    GetWindowRect( win->obj.handle, &window_rect );
 
-    TRACE("%p scope hwnd = %p %s (%s)\n",
-          hwnd, hwndScope, wine_dbgstr_rect(&window_rect), wine_dbgstr_rect(extra_rect) );
+    TRACE("%p parent %p %s (%s)\n",
+          win->obj.handle, win->parent, wine_dbgstr_rect(&window_rect), wine_dbgstr_rect(extra_rect) );
 
     /* walk all DCEs and fixup non-empty entries */
 
-    USER_Lock();
     LIST_FOR_EACH_ENTRY( dce, &dce_list, struct dce, entry )
     {
         TRACE( "%p: hwnd %p dcx %08x %s %s\n", dce, dce->hwnd, dce->flags,
                (dce->flags & DCX_CACHE) ? "Cache" : "Owned", dce->count ? "InUse" : "" );
 
         if (!dce->hwnd) continue;
-        if ((dce->hwnd == hwndScope) && !(dce->flags & DCX_CLIPCHILDREN))
+        if ((dce->hwnd == win->parent) && !(dce->flags & DCX_CLIPCHILDREN))
             continue;  /* child window positions don't bother us */
 
         /* if DCE window is a child of hwnd, it has to be invalidated */
-        if (dce->hwnd == hwnd || IsChild( hwnd, dce->hwnd ))
+        if (dce->hwnd == win->obj.handle || IsChild( win->obj.handle, dce->hwnd ))
         {
             make_dc_dirty( dce );
             continue;
         }
 
         /* otherwise check if the window rectangle intersects this DCE window */
-        if (hwndScope == dce->hwnd || IsChild( hwndScope, dce->hwnd ))
+        if (win->parent == dce->hwnd || IsChild( win->parent, dce->hwnd ))
         {
             RECT dce_rect, tmp;
             GetWindowRect( dce->hwnd, &dce_rect );
@@ -441,7 +439,6 @@ void invalidate_dce( HWND hwnd, const RECT *extra_rect )
                 make_dc_dirty( dce );
         }
     }
-    USER_Unlock();
 }
 
 /***********************************************************************

dlls/user32/user_private.h

@@ -205,12 +205,13 @@ extern HMODULE user32_module DECLSPEC_HIDDEN;
 extern HBRUSH SYSCOLOR_55AABrush DECLSPEC_HIDDEN;
 
 struct dce;
+struct tagWND;
 
 extern BOOL CLIPBOARD_ReleaseOwner(void) DECLSPEC_HIDDEN;
 extern BOOL FOCUS_MouseActivate( HWND hwnd ) DECLSPEC_HIDDEN;
 extern BOOL set_capture_window( HWND hwnd, UINT gui_flags, HWND *prev_ret ) DECLSPEC_HIDDEN;
 extern void free_dce( struct dce *dce, HWND hwnd ) DECLSPEC_HIDDEN;
-extern void invalidate_dce( HWND hwnd, const RECT *rect ) DECLSPEC_HIDDEN;
+extern void invalidate_dce( struct tagWND *win, const RECT *rect ) DECLSPEC_HIDDEN;
 extern void erase_now( HWND hwnd, UINT rdw_flags ) DECLSPEC_HIDDEN;
 extern void *get_hook_proc( void *proc, const WCHAR *module ) DECLSPEC_HIDDEN;
 extern LRESULT call_current_hook( HHOOK hhook, INT code, WPARAM wparam, LPARAM lparam ) DECLSPEC_HIDDEN;

dlls/user32/winpos.c

@@ -1997,17 +1997,15 @@ BOOL set_window_pos( HWND hwnd, HWND insert_after, UINT swp_flags,
         }
     }
     SERVER_END_REQ;
-    WIN_ReleasePtr( win );
 
-    if (ret)
-    {
-        if (((swp_flags & SWP_AGG_NOPOSCHANGE) != SWP_AGG_NOPOSCHANGE) ||
-            (swp_flags & (SWP_HIDEWINDOW | SWP_SHOWWINDOW | SWP_STATECHANGED | SWP_FRAMECHANGED)))
-            invalidate_dce( hwnd, &old_window_rect );
+    if (ret && (((swp_flags & SWP_AGG_NOPOSCHANGE) != SWP_AGG_NOPOSCHANGE) ||
+                (swp_flags & (SWP_HIDEWINDOW | SWP_SHOWWINDOW | SWP_STATECHANGED | SWP_FRAMECHANGED))))
+        invalidate_dce( win, &old_window_rect );
 
-        USER_Driver->pWindowPosChanged( hwnd, insert_after, swp_flags, window_rect,
-                                        client_rect, &visible_rect, valid_rects );
-    }
+    WIN_ReleasePtr( win );
+
+    if (ret) USER_Driver->pWindowPosChanged( hwnd, insert_after, swp_flags, window_rect,
+                                             client_rect, &visible_rect, valid_rects );
     return ret;
 }