Locking an acelerator group prevents the accelerators contained
within it to be changed during runtime. Refer to
AccelMap.changeEntry about runtime accelerator changes.
If called more than once, accel_group remains locked until
AccelGroup.unlock has been called an equivalent number
of times.
Locks the given accelerator group.
Locking an acelerator group prevents the accelerators contained within it to be changed during runtime. Refer to AccelMap.changeEntry about runtime accelerator changes.
If called more than once, accel_group remains locked until AccelGroup.unlock has been called an equivalent number of times.