Preventing Early User Closing of Application

If the application is busy doing its thing, before it goes off and starts can disable the various buttons to prevent trying to start the process a second time or to quit -- but, how to prevent an accidental or otherwise "Alt-F4" or selecting the Close area until it finishes its work and comes back to the UI?

Answer 1

[Voss]

Maybe set the CloseRequestFcn to [] when you want to disable closing the application. Then restore the CloseRequestFcn again when closing should be re-enabled.

[dpb]

I was hoping maybe there was a Window property associated with the close function...

[Voss]

I'm not sure what you mean by "Window property".

Setting the figure's CloseRequestFcn to [] prevents closing via Alt-F4, clicking the X button, and using the close() function (unless using close all force), but it does not prevent closing programmatically via delete().

f = figure('CloseRequestFcn',[]);
close(f) % does not delete f
ishandle(f)

ans = logical
   1

delete(f) % deletes f
ishandle(f)

ans = logical
   0

[dpb]

" what you mean by "Window property"."

Seems like the "X" button would be addressable to set its state similar as to other controls is all...

I grok the callback....thanks.