Revision 2d20c7ff gr-qtgui/apps/pyqt_example_c.py

b/gr-qtgui/apps/pyqt_example_c.py
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if __name__ == "__main__":
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    tb = my_top_block();
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    tb.start()
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    sys.exit(tb.qapp.exec_())
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    tb.qapp.exec_()
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    tb.stop()
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