>In my app I would like my users to be able to hit the ESC key to Release the Active object no matter what it is, a form, print preview, etc, and have the previously Active object become Active.
>
>I know there must be a standard routine to do this. How do I determine what is the currently Active object and should I run the Destroy or Release method to Deactivate the object?
>
>Thank you in advance.

On your forms, you need a command button with the Cancel property set to true. I have one as a base class with the cancel prop set to true and ThisForm.lCanceled = .T. and ThisForm.QueryUnload() in the Click method. My form's QueryUnload() calls a This[Form].UpdateTables or This[Form].RevertTables depending on the value of ThisForm.lCanceled, before doing a This.Release()

In my base form class, I have the following in the Activate:

with This
   if .WindowState = 1
      .WindowState = 0
   endif
   .AddActivate()   && custom method I added to the form
   .Refresh()
endwith

Keep in mind this is NOT Lotus Notes, so Escape may not work the same for all objects that are not forms.