Manually sets a keyval and modifier mask as the accelerator rendered
by accel_label.
If a keyval and modifier are explicitly set then these values are
used regardless of any associated accel closure or widget.
Providing an accelerator_key of 0 removes the manual setting.
Manually sets a keyval and modifier mask as the accelerator rendered by accel_label. If a keyval and modifier are explicitly set then these values are used regardless of any associated accel closure or widget. Providing an accelerator_key of 0 removes the manual setting.