RadioMenuItem

A RadioMenuItem is the menu-based equivalent of a RadioButton, but is also very similar to a CheckMenuItem with the exception that it can be added to a group. With the group specified, only one RadioMenuItem in the group can be active at any one time.

Constructor

The RadioMenuItem can be constructed using the following:

radiomenuitem = Gtk.RadioMenuItem(label, group, use_underline)

The label parameter should be set to a string of text which identifies the function of the RadioMenuItem. A group must also be declared to allow the RadioMenuItem to function. For the first RadioMenuItem in the group, this would be set to None, with all subsequent widgets being added to the group being the name of the first widget added. The use_underline value can also be set as True to provide a mnemonic key which provides accessibility via the keyboard.

Methods

The label text of the RadioMenuItem can be specified after creation with:

radiomenuitem.set_label(label)

A group can also be defined after construction of the widget:

radiomenuitem.join_group(group)

The group parameter should be set to the first RadioMenuItem which is to be a part of the group. The first item however does not need to have the .join_group() method called.

To retrieve the group which the RadioMenuItem is attached:

radiomenuitem.get_group()

Signals

The commonly used signals of the RadioMenuItem are:

"toggled" (radiomenuitem)
"group-changed" (radiomenuitem)

A "toggled" signal is emitted by the RadioMenuItem whenever the widget is made active or inactive. The "group-changed" signal is emitted when the RadioMenuItem group is changed, or it is removed from the group entirely.

Example

For an example of the RadioMenuItem see the Menu page.