>>>It may depend on the OS too.
>>Really?
>
>That was a guess, but I don't think Windows 95 handles top level or desktop forms quite the same way Windows 98 and above do.

It was a SWAG here sometime ago that what was occurring was that the dialog was inheriting the visibility status of the calling window. Both functions are calls to the Common Dialogs DLL (GetOpenFileName() and GetSaveFileName()). Both require that an OPENFILENAME structure be passed. This structure requires that the hwndOwner member be set to the window handle of the window that owns the dialog. In VFP's case, this would most likely be the _SCREEN.

I haven't tested an SDI app with calls to either function on a version of Windows after Win95B. This is because we've still got users on that platform, and if it ain't broke...:-)