onActivate
fun onActivate(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: () -> Unit): <Error class: unknown class>(source)
Emitted to when the menu button is activated.
The ::activate signal on GtkMenuButton is an action signal and emitting it causes the button to pop up its menu.
Since
4.4
Parameters
connectFlags
a combination of ConnectFlags
handler
the Callback to connect