Sets the underlying state of the `GtkSwitch`.
Normally, this is the same as [[email protected]:active], unless the switch is set up for delayed state changes. This function is
typically called from a [[email protected]:GtkSwitch:state-set
] signal handler.
See [[email protected]:GtkSwitch:state-set
] for details.
this |
a `GtkSwitch` |
state |
the new state |