Finds the first entry in an accelerator group for which @find_func returns %TRUE and returns its #GtkAccelKey.
a function to filter the entries of @accel_group with
data to pass to @find_func
the key of the first entry passing @find_func. The key is owned by GTK+ and must not be freed.
See Implementation
Finds the first entry in an accelerator group for which @find_func returns %TRUE and returns its #GtkAccelKey.