Hi all, I'm stuck after implementing a waterfall with QwtSpectrogram. I've had a look at the other posts and I'm still stumped.

I have a button that when clicked calls ui->myQwtPlot->replot(); and my spectrogram updates as many times as I click the button with almost no delay. However, if I place the replot(); call in a FOR loop under the button's callback, the spectrogram will not update. I included a sleep(1) in the FOR loop just in case there was some odd delay.

Still no luck.

Any ideas?

Thanks,
Tom