>I somehow think that this was once better documented in the help than it is now. It says that if ESC is pressed, a button with .cancel=.t. will receive a click event. Lastkey() will of course be 27.
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>What I can't find is that it should also work backwards, i.e. a mouse click on such button should also set lastkey() to return 27. I have too many things open at the moment to try this, but I seem to remember that testing for lastkey()=27 was sufficient if there was a cancel button on the form. If the test returned .t., the user initiated close form. Don't remember if QueryUnload was also affected with this, i.e. whether clicking the close box also set lastkey() to 27.

Ok, thanks, I'll continue my research tomorrow and will try to find where this is coming from.