We a function with quite time-critical part. It would very nice to stop GUI update while this function is being executed. Is there any to do that?
I’m afraid here at Toradex we’re not Qt experts, so I can’t answer you this question.
But I would assume that the redrawing is done in a separate thread. Increasing the priority of your own thread high enough could be sufficient to get all the CPU time.
Have a look at CeSetThreadPriority() as a starting point.