>>Is there a foolproof way of determining if a window (given either it's hWnd or WHandle) is a VFP code editor window? I've been using _EdGetEnv (and checking for a return value of 0) but it seems to fail under various circumstances (that is, _EdGetEnv seems to throw an exception). I thought about using the Win32 GetClassName() call but I don't see anything that differentiates something like the Property window from the editor Window (it seems some windows DO return a slightly different result, though).
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>I guess that _EdGetEnv throws exeption on noe-editor windows, right?
>Why don't you wrap calls to _EdGetEnv in TRY...ENDTRY?

This is in an FLL. Actually, it occurred to me last night that the reason that this may have been failing was that I was calling _EdGetEnv with an invalid WHandle. I assumed VFP would always pass me a valid one, but it can't in every scenario depending on what is selected. I tried out the idea this morning and (at least in the few scenarios I could cause it to fail in the past) it seems to have fixed it. Crossing my fingers...