Another possibility is to call the WinAPI function GetAsyncKeyState to see what keys are pressed. The advantage of this method is you can check to see if a combination of CTRL-ALT-SHIFT are held down, since any other key will be putting keystrokes in the keyboard buffer. This solution would also use a timer as Hilmar suggested, but the timer would be running continuously.

For example, if you look for the SHIFT-CTRL combination, the code would look like this:

Form.LOAD

DECLARE SHORT GetAsyncKeyState IN USER32.DLL INTEGER

Timer.Timer

    IF GetAsyncKeyState(0x10)  <> 0 ;	&& shift key pressed
        and GetAsyncKeyState(0x11) <> 0  && ctrl key pressed

        * If controls are hidden, make them visible here
    ELSE
        * If controls are visible, hide them here.
    ENDIF

A list of the available keycodes is here.

-Tom

[This posting is provided "AS IS" with no warranties, and confers no rights.]