[TYPO3-dev] Show progress in backend module

[Michael Oehlhof]

Hello.

I am implementing a backend modul that converts data and has a long runtime.
The content is normally shown when the execution of the module is 
finished. The user dont see any progress a long time.
I want to show the user the progress in the backend form.

Is there a possibility to render the content while the module is running?

Any hints are welcome.

Regards
Michael