> Greetings,
>
> is there a way in Fvwm to bind some command to just pressing and
> immediately releasing the Ctrl-key without pressing any other key?
>
> Holding down Ctrl any pressing A should NOT trigger this command.

 On Linux, you can use the 'xcape' program to put together something to
do this. xcape allows you to convert tapping and releasing one key into
pressing another, including modifier keys; you can then use this to make
xcape generate an unusual key+modifiers combination and bind that in
fvwm to some action. For example, binding CapsLock to run a command.

* Tell xcape to turn tapping the CapsLock key into F5 with multiple
  modifiers set:

        xcape -t 200 -e '#66=Control_L|Shift_L|Alt_L|F5'

* tell fvwm to use this key combination to run a program:

        Key     F5      A  CSM        Exec dt dmenu-front

  (You could make it any fvwm action, of course, including a function.)

xcape is:
        https://github.com/alols/xcape

        - cks

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