1 files changed, 14 insertions, 1 deletions
diff --git a/src/plugins/platforms/xcb/qxcbwindow.h b/src/plugins/platforms/xcb/qxcbwindow.h
index 268a2aeaa5..72b5c7bcc9 100644
--- a/src/plugins/platforms/xcb/qxcbwindow.h
+++ b/src/plugins/platforms/xcb/qxcbwindow.h
@@ -146,7 +146,6 @@ public:
 
     void handleMouseEvent(xcb_timestamp_t time, const QPoint &local, const QPoint &global, Qt::KeyboardModifiers modifiers);
 
-    void updateSyncRequestCounter();
     void updateNetWmUserTime(xcb_timestamp_t timestamp);
 
 #if defined(XCB_USE_EGL)
@@ -158,6 +157,11 @@ public:
     QXcbWindowFunctions::WmWindowTypes wmWindowTypes() const;
     void setWmWindowType(QXcbWindowFunctions::WmWindowTypes types);
 
+    bool needsSync() const;
+
+public Q_SLOTS:
+    void updateSyncRequestCounter();
+
 private:
     void changeNetWmState(bool set, xcb_atom_t one, xcb_atom_t two = 0);
     NetWmStates netWmStates();
@@ -224,8 +228,17 @@ private:
 
     xcb_visualid_t m_visualId;
     int m_lastWindowStateEvent;
+
+    enum SyncState {
+        NoSyncNeeded,
+        SyncReceived,
+        SyncAndConfigureReceived
+    };
+    SyncState m_syncState;
 };
 
 QT_END_NAMESPACE
 
+Q_DECLARE_METATYPE(QXcbWindow*)
+
 #endif