How can you tell if the close button was used to close a browse window. Want to treat close like an , but do not know how to code for it.

Open browse window. Esc is a cancel. Rightmouse or Enter is select (on key label ... keyboard ctrl+w). If the client uses the close box I want to treat is like an esc. But how? My current code "if the lastkey = 27 then go oldrecno". But how to know if 27 or close button. Of course the question could be rephrased to ask, how enter or right mouse click?

Thanks - Brenda