Adds a button to notification that activates action when clicked. action must be an application-wide action (it must start with "app.").
If target is non-NULL, action will be activated with target as its parameter.
label of the button
an action name
a glib.Variant to use as action's parameter, or NULL
2.40
Adds a button to notification that activates action when clicked. action must be an application-wide action (it must start with "app.").
If target is non-NULL, action will be activated with target as its parameter.