Set whether [class@ClapperGtk.
ToggleFullscreenButton] button in the this should be visible.
You might want to consider setting this to false, if your application does not implement [
signal@ClapperGtk.Video:ClapperGtkSimpleControls:toggle-fullscreen] signal.
| this | |
| fullscreenable |
whether show button for toggling fullscreen state |