diff -r b72c6db6890b -r 5dc02b23752f src/gui/kernel/qwidget.h
--- a/src/gui/kernel/qwidget.h	Wed Jun 23 19:07:03 2010 +0300
+++ b/src/gui/kernel/qwidget.h	Tue Jul 06 15:10:48 2010 +0300
@@ -773,6 +773,7 @@
 #ifdef Q_WS_X11
     friend void qt_net_update_user_time(QWidget *tlw, unsigned long timestamp);
     friend void qt_net_remove_user_time(QWidget *tlw);
+    friend void qt_set_winid_on_widget(QWidget*, Qt::HANDLE);
 #endif
 
     friend Q_GUI_EXPORT QWidgetData *qt_qwidget_data(QWidget *widget);