gio:action-group-action-state (group name)

group -- a g:action-group instance
name -- a string for the name of the action to query

The current g:variant parameter with the state of the action, or a cffi:null-pointer.

Queries the current state of the named action within the action group. If the action is not stateful then a cffi:null-pointer will be returned. If the action is stateful then the type of the return value is the type given by the g:action-group-action-state-type function.