Re: program wait for input

Hi Roger,

   after mapping a dialog window, use gClient->WaitFor(dialog) to wait for the dialog to pop down. For examples see $ROOTSYS/tutorials/gui/guitest.C.

ProcessEvents() just processes any pending events and then returns.

Cheers, Fons.

Roger Mason wrote:
> Hello,
>
> I have a program that pops up a dialog box that will gather user
> input. I'd like execution to stop until the user has supplied that
> input and pressed "OK" on the dialog box.
>
> I thought that gSystem->ProcessEvents() would force that wait, so I
> have the present code snippet:
>
> // Pop up a dialog box and get info about the file.
>
> SimpleDialog(); // pop up the dialog
> gSystem->ProcessEvents(); // should wait for input?
> cout << "File has " << ncols << " columns" << endl;
>
> The output from the cout line shows that the system is not waiting for
> input.
>
> Thanks for any help,
> Roger
>

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