Removes an accelerator previously installed through gtk_accel_group_connect().
Since 2.20 @closure can be %NULL.
the closure to remove from this accelerator group, or %NULL to remove all closures
Return: %TRUE if the closure was found and got disconnected
See Implementation
Removes an accelerator previously installed through gtk_accel_group_connect().
Since 2.20 @closure can be %NULL.