As far as I know it is not possible because we have no way to know which
control the cursor is hovering over when F1 is pressed.

--
Jim
"Ahasverus" wrote in message
...

Hello,

When the mouse hovers over a built-in Ribbon control, you can press F1 to
show the help topic related to it.

Is it possible to achieve the same with a custom Ribbon control, and how ?

Thanks !