On 10/15/2018 7:36 AM, Dan Muller wrote:

I was a little fuzzy on the 'deleted' status of controls and wasn't sure if that sort of thing would work. (I guess the docs are reasonably clear that this is an explicit status of children, but it's obfuscated by the fact that you can't read or set this status explicitly. Similarly, the naming of the "hidden" status compared to its manipulator, "show", is unfortunate.)

Racket's GUI functions more or less parallel  Windows GDI.  I can't speak for "deleted" - that's not an object property used by GDI [maybe from dotNET?] .  But the GDI call to hide an object is ShowWindow( <object>, SW_HIDE ).

https://docs.microsoft.com/en-us/windows/desktop/api/winuser/nf-winuser-showwindow

George

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