>>>With my main form "A" (as top level, SCREEN=OFF in config.fpw) open, I open a new modal form "B" (desktop, in toplevel, autocenter, modal) then open a new modal form "C" from "B" (same settings as "B"). When I close C then B, the close [X] on "A" appears disabled but it still works. What could be causing this?
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>>Many of us have seen this. One trick is to issue a SHOW in activate.
>
>Could you expand on this? I couldn't get it to work. I assumed you meant thisform.show but that does nothing to fix it.

Earlier today I noticed one of my projects - despite the fact that I thought I had changed it. I looked in activate and the code read:
this.show

I changed it to:
=thisform.show()
and it seemed to catch. Understand, I don't run my project forms inside the VFP SCREEN - I use a base class form as my main container form.

The problem seems to occur when 2 [subsequent] modal forms are DOne (DO FORM xxx) from a MDI form control's Click. CLicking the main form's max and [then] min buttons seems to to make [X] CLose available.

HTH - let me know what happens