void focus() const;
void sendTo(unsigned int dest) const;
void move(int x, int y) const;
void focus() const;
void sendTo(unsigned int dest) const;
void move(int x, int y) const;
bool operator == (const XWindow &w) const { return w._window == _window; }
bool operator == (const Window &w) const { return w == _window; }
bool operator == (const XWindow &w) const { return w._window == _window; }
bool operator == (const Window &w) const { return w == _window; }