Request for the state of action to be changed to value.
The action must be stateful and value must be of the correct type.
See g_action_get_state_type().
This call merely requests a change. The action may refuse to change
its state or may change its state to something other than value.
See g_action_get_state_hint().
If the value GVariant is floating, it is consumed.
Since 2.28
Request for the state of action to be changed to value. The action must be stateful and value must be of the correct type. See g_action_get_state_type(). This call merely requests a change. The action may refuse to change its state or may change its state to something other than value. See g_action_get_state_hint(). If the value GVariant is floating, it is consumed. Since 2.28