Deprecatedspinner: Gtk.SpinButtonvalid GtkSpinButton widget.
Deprecatedbutton: numberNumber of the pointer button for the event, usually 1, 2 or 3.
Deprecatedupwards: booleantrue 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.