* As the key input focus mechanism works like a stack, the top most control receives all the key events, and passes on the
* unhandled events to the controls below in the stack. A control in the stack will regain key input focus when there are no more
* controls above it in the focus stack.
* As the key input focus mechanism works like a stack, the top most control receives all the key events, and passes on the
* unhandled events to the controls below in the stack. A control in the stack will regain key input focus when there are no more
* controls above it in the focus stack.