[PySide] Why doesn't this example work?
Jim Byrnes
jf_byrnes at comcast.net
Fri Oct 24 20:12:41 CEST 2014
On 10/22/2014 10:52 PM, Eric Thomson wrote:
> I meant to write that I put
> myWindow.repaint()
> before time.sleep(3).
>
> Incidentally, what book are you working through?
PySideGUI Application Development
>
> On 10/22/14, Eric Thomson <thomson.eric at gmail.com> wrote:
>> Try putting
>> myWindow.repaint()
>> before myWindow.show().
>>
>> That took away the weird behavior on my end. I cannot explain it, though.
As amended above, it worked for me also.
Thanks, Jim
>>
>> On 10/22/14, Jim Byrnes <jf_byrnes at comcast.net> wrote:
>>> In looking at the lists archives, I see that most of the participants
>>> seem to be experienced developers. As a novice programmer I hope I am
>>> not intruding by asking some basic questions.
>>>
>>> I am working my way through examples in a PySide book I bought.
>>> According to the author the example should display a 200 x 150 window,
>>> pause 3 seconds and then display a 300 x 300 window. On my system
>>> (Ubuntu 12.04) there is a approx 3 second delay after starting the
>>> program and then I see the 300 x 300 window. I never see the first
>>> window.
>>>
>>> Could someone explain to me why it does not act as described?
>>>
>>> # Import required modules
>>> import sys
>>> import time
>>> from PySide.QtGui import QApplication, QWidget
>>>
>>> class SampleWindow(QWidget):
>>> """ Our main window class
>>> """
>>>
>>> # Constructor function
>>> def __init__(self):
>>> QWidget.__init__(self)
>>> self.setWindowTitle("Sample Window")
>>> self.setGeometry(300, 300, 200, 150)
>>> self.setMinimumHeight(100)
>>> self.setMinimumWidth(250)
>>> self.setMaximumHeight(200)
>>> self.setMaximumWidth(800)
>>>
>>> if __name__ == '__main__':
>>> # Exception Handling
>>> try:
>>> myApp = QApplication(sys.argv)
>>> myWindow = SampleWindow()
>>> myWindow.show()
>>> time.sleep(3)
>>> myWindow.resize(300, 300)
>>> myWindow.setWindowTitle("Sample Window Resized")
>>> myWindow.repaint()
>>> myApp.exec_()
>>> sys.exit(0)
>>> except NameError:
>>> print("Name Error:", sys.exc_info()[1])
>>> except SystemExit:
>>> print("Closing Window...")
>>> except Exception:
>>> print (sys.exc_info()[1])
>>>
>>> Thanks, Jim
>>>
>>> _______________________________________________
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>>> PySide at qt-project.org
>>> http://lists.qt-project.org/mailman/listinfo/pyside
>>>
>>
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