[Octave-bug-tracker] [bug #39733] figure window stuck if error while executing window callback

[Mike Miller]

Update of bug #39733 (project octave):

                  Status:                    None => Works For Me           
             Open/Closed:                    Open => Closed                 

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Follow-up Comment #1:

I think this behavior of the FLTK toolkit actually doesn't depend on an error
happening at all. The same occurs if you comment out the error line, the
reason being that FLTK redraws are normally tied to the readline input loop.

The new Qt toolkit behaves a little differently, the figure is not redrawn for
me until focus moves away from the figure window.

If you use the drawnow() function to force a redraw in your callback function,
the figure is updated immediately and there is no problem, no matter which
toolkit or whether an error occurs later in the callback or not.

I'm going to close this as working, if you want a callback to immediately
redraw something on the plot it should be using drawnow. Sorry for the long
delay in someone getting to this bug report.

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