On 05/06/2012 08:55 PM, Phil Thompson wrote:
On Sun, 06 May 2012 20:25:15 +0300, Enes Albay<albaye...@gmail.com>
wrote:
Hi,
If i implement my class like below:
class MainWindow(QtGui.QMainWindow):
def __init__(self):
super(MainWindow, self).__init__()
self.initUI()
def initUI():
....
....
self.showButton = QtGui.QPushButton(u"KlavyeyiGoster",
self.mainWidget)
self.showButton.resize(self.showButton.sizeHint())
self.showButton.clicked.connect(self.widgetClicked)
....
....
def widgetClicked(self):
self.newWidget = QtGui.QWidget();
self.newWidget.setGeometry(0, 0, 300, 300)
self.newWidget.show()
when i click Button, newWidget is constructed and showed. But if i
change "widgetClicked" method like this:
def widgetClicked(self):
newWidget = QtGui.QWidget();
newWidget.setGeometry(0, 0, 300, 300)
newWidget.show()
when i clicked the button, it doesn't show anything. There are no
compilation or run time errors.
What is the reason of this difference?
In the second version you aren't keeping a reference to the widget (either
explicitly or implicitly by giving it a parent) so it is getting garbage
collected when widgetClicked() returns.
Phil
Thanks for your quick replies, Phil and Detlev :)
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