Long operation -> Refresh user interface

**pl01** · 31st January 2011, 09:48

Hi,

I have a long operation in my application. During this the QT UI is never refreshed. It is normal because the "UI thread" is the same.

The operation MUST be in the same thread but I would like to continue to refresh some widgets.

I have try this : QCoreApplication:

rocessEvents(QEventLoop::AllEvents);

On some machines it works but not on every computers !

Do you think that there is a way to launch another thread that will force the refresh ?

Thx

**zgulser** · 31st January 2011, 10:05

Hi,

You may use QTimer in order to refresh your widgets in the same thread..

Or you can move your "long operation" into seperate thread and emit a signal to trigger UI thread.