Deprecatedspinner: Gtk.SpinButton
valid GtkSpinButton widget.
Deprecatedbutton: number
Number of the pointer button for the event, usually 1, 2 or 3.
Deprecatedupwards: boolean
true for upwards arrow click, false for downwards arrow click.
whether all actions neccessary for the button click simulation were carried out successfully.
This function will generate a
buttonclick in the upwards or downwards spin button arrow areas, usually leading to an increase or decrease of spin button’s value.