[Qt-interest] bloody ungraspable control of my pusbutton

[Jeroen De Wachter]

Hi Sal,

Are you doing this in your one and only thread?

Because your loop does not allow the event loop to run, I think (unless
chk_msg() is showing a QDialog or something of the like)?

If your event loop does not run, the button will indeed never respond to
anything again... (and your application will not redraw, either)

You may want to do this in a seperate thread, so the event loop in your
GUI thread still gets processed.

Kind regards,

Jeroen De Wachter

PS: I am by no means the best here, but hth ;)

On Mon, 2010-02-01 at 20:21 -0800, S. Aguinaga wrote:
> Dear Fellows,
> 
> 
> I have a question for the best of you.
> 
> 
> I have a button that initiates a tone stimulus using my audio device.
> This stimulus is meant to be continuous until the pushbutton is
> toggled,
> but what is happening is that once my code goes into the audio loop
> it 
> never allows control back to my pushbutton, in other words, I can't
> toggle it
> and right now the only way out is to go to the terminal and do
> control-C.
> 
> 
> here is the loop:
> 
> 
> while ( contToneButton->isChecked() ) {
>         chk_msg();
>         c = (int) floor((1 + oct0) * ncue / 2);
>         cue(c);
>         (void) ar_io_cur_seg(dvid);
> };
> 
> 
> have any of you come across something like this an do you mind
> sharing 
> your methods?
> 
> 
> 
> 
> Thank you
> 
> 
> // Sal Aguinaga
> // Northwestern University
> 
> 
> 
> 
> _______________________________________________
> Qt-interest mailing list
> Qt-interest at trolltech.com
> http://lists.trolltech.com/mailman/listinfo/qt-interest



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