user32: RealChildWindowFromPoint should skip invisible windows.

dlls/user32/tests/win.c

@@ -7038,9 +7038,9 @@ static void test_child_window_from_point(void)
 
     DestroyWindow(parent);
 
-todo_wine
     ok(!found_invisible, "found %d invisible windows\n", found_invisible);
     ok(found_disabled, "found %d disabled windows\n", found_disabled);
+todo_wine
     ok(found_groupbox == 4, "found %d groupbox windows\n", found_groupbox);
     ok(found_httransparent, "found %d found_httransparent windows\n", found_httransparent);
 todo_wine

dlls/user32/winpos.c

@@ -376,7 +376,7 @@ HWND WINAPI ChildWindowFromPoint( HWND hwndParent, POINT pt )
  */
 HWND WINAPI RealChildWindowFromPoint( HWND hwndParent, POINT pt )
 {
-    return ChildWindowFromPointEx( hwndParent, pt, CWP_SKIPTRANSPARENT );
+    return ChildWindowFromPointEx( hwndParent, pt, CWP_SKIPTRANSPARENT | CWP_SKIPINVISIBLE );
 }
 
 /*******************************************************************