gtk:pad-controller-set-action (controller type index mode label name)

controller -- a gtk:pad-controller object
type -- a gtk:pad-action-type value with the pad feature that will trigger the action
index -- an integer with the 0-indexed button/ring/strip number that will trigger the action
mode -- an integer with the mode that will trigger the action, or -1 for all modes
label -- a string with the Human readable description of the action, the string should be deemed user visible
name -- a string with the action name that will be activated in the g:action-group instance

Adds an individual action to controller. The action will only be activated if the given button/ring/strip number in index is interacted while the current mode is mode. The -1 value may be used for simple cases, so the action is triggered on all modes.

The given label should be considered user visible, so internationalization rules apply. Some windowing systems may be able to use those for user feedback.