-extern bool clientwin_check_fullscreen_request(WClientWin *cwin,
- int w, int h, bool switchto);
-extern bool clientwin_fullscreen_scr(WClientWin *cwin, WScreen *vp,
- bool switchto);
-extern bool clientwin_enter_fullscreen(WClientWin *cwin, bool switchto);
-extern bool clientwin_leave_fullscreen(WClientWin *cwin, bool switchto);
-extern bool clientwin_set_fullscreen(WClientWin *cwin, int sp);
-extern bool clientwin_is_fullscreen(WClientWin *cwin);