1 files changed, 5 insertions, 0 deletions
diff --git a/src/frame.hh b/src/frame.hh
index e1647a99..1816ad01 100644
--- a/src/frame.hh
+++ b/src/frame.hh
@@ -30,6 +30,11 @@ namespace ob {
   client are sent to the window manager.
 */
 class OBFrame : public otk::OtkWidget {
+public:
+
+  //! The event mask to grab on frame windows
+  static const long event_mask = EnterWindowMask | LeaveWindowMask;
+
 private:
   OBClient *_client;
   const otk::ScreenInfo *_screen;