- void buttonPressEvent(XButtonEvent *be);
- void buttonReleaseEvent(XButtonEvent *re);
- void enterNotifyEvent(XCrossingEvent * /*unused*/);
- void leaveNotifyEvent(XCrossingEvent * /*unused*/);
- void exposeEvent(XExposeEvent *ee);
- void keyPressEvent(XKeyEvent *ke);
+ void buttonPressEvent(const XButtonEvent *be);
+ void buttonReleaseEvent(const XButtonEvent *re);
+ void enterNotifyEvent(const XCrossingEvent * /*unused*/);
+ void leaveNotifyEvent(const XCrossingEvent * /*unused*/);
+ void exposeEvent(const XExposeEvent *ee);
+ void keyPressEvent(const XKeyEvent *ke);