How to lock/disable whole AX form

protected void lockFormScreen(boolean _lock = true)
{
    FormControl formControl;
    int         controlCount, a, id;
    boolean     toState = !_lock;
    
    if (formRun)
    {
        if (_lock)
        {
            formControlState = new Map(Types::Integer, Types::Enum);
        }
        controlCount = formRun.design().controlCount();
        for (a = 1; a <= controlCount; a++)
        {
            formControl = formRun.design().controlNum(a);
            id          = formControl.id();
            if (_lock)
            {
                formControlState.insert(id, formControl.enabled());
            }
            else
            {
                if (formControlState.exists(id))
                {
                    toState = formControlState.lookup(id);
                }
                else
                {
                    toState = _lock;
                }
            }
            formControl.enabled(toState);
        }
    }
}