Hi Lodron,
you may want to use the Qt Threading capabilities to maintain a reactive GUI
during calculation. The main advantage using Qt Threads is the support of
asynchronous events. E.g. the QThread class has signals like finished() and
terminated() which makes it really easy to synchronize with the main GUI
thread. Start your Qt thread, do your calculations there and listen to these
signals to get informed when results are available. Unfortunately, you can`t
use the mitkProgressBar from this thread without possibly running into Race
Conditions.
Here`s a link to Qt Threading documentation:
http://doc.qt.nokia.com/latest/threads.html
Regards
Michael
Von: Lodron, Gerald [mailto:[email protected]]
Gesendet: Mittwoch, 2. Februar 2011 12:01
An: '[email protected]'
Betreff: [mitk-users] ProgressBar update
Hi,
I use the mitk::ProgressBar in the GUI to say the user that he must wait. If i
start my calculation the progressbar gets updated, but when i click on the gui
during calculation (takes a while) the gui gets a little bit gray and then the
progress bar does not update any more until it is finished (on the header there
is "Keine Rückmeldung" appended in german windows 7 version)
any suggestions or recommended ways/examples in MITK to process longer
algorithms to avoid this (maybe over multithreading)?
thanks,
Gerald
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