Looks up the action in the action groups associated with this and its ancestors, and activates it.
This is a wrapper around [[email protected]_action_variant] that constructs the args variant according to
format_string.
| this |
a `GtkWidget` |
| name |
the name of the action to activate |
| format_string |
GVariant format string for arguments or null for no arguments |
| ... |
arguments, as given by format string |
|
true if the action was activated, false if the action does not exist |