[PyQt] launch a dialog from main window

[Paolo Franzetti]

Hi.

I am a novice of Qt and PyQt and I am stuck on a (probably)
very simple problem.

I created two .ui files for two windows using the Qt Designer
and I converted them into .py modules with pyuic4

I wrote the program.py code to launch the main window using
the main.py module. Clicking on the 'VIEW DATA' button I launch the
viewer.py window, but then the main window is freeze.

How can I do this job without blocking the main window ?

Thank you very much for any help,
Paolo Franzetti
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