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Possible Duplicate:
Why does Button[ … , ChoiceDialog[] ] freeze the front end?

Warning: the following code may freeze your session, as it does mine. I have to wait for the dialog asking whether to abort dynamic updating if that happens. Run this with a fresh kernel:

Button["Pressing this button may freeze your session!", InputString["Type something", "(or just press Enter)"] ]

and press the button. Then try to interact with the dialog. I see a spinning wait cursor, then I have to "Abort" dynamic execution twice to get back control of Mathematica (the kernel quits).

I found no items under "Possible Issues" for either InputString or Button that could explain this.

  1. Is this a bug?

  2. How else could I obtain input from a user who clicks a button?

Version 8.0.4 on Mac OSX.

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