[PyQt] Updating Qlabel in widget

[Hans-Peter Jansen]

On Thursday 25 August 2011, 12:02:52 uahmed wrote:
> Hi
>
> I want to update the Qlabel after the widget is made , Problem is
> that updating is base on counter so i call that function after 4
> seconds , but when it by pass the "if" statment it go through all the
> commands give me no errors but it does not update the widet although
> if i dont putt "if" statment all lines are executed and Qlabel update
> too  . Can you please tell me where i am wrong
>
> Here is code
>
> import sys,os
> from functools import partial
> from PyQt4 import QtGui, QtCore
> import time
>
>
> class main():
>
> def f2(self):
>                 print "f2"
>                 global count
>                 count +=1
>                 if ( count == 2):
>                         msg_label["user"] =
> QtGui.QLabel("update",widget) msg_label["user"].setGeometry(10, 10,
> 100, 100) print count
>                 QtCore.QTimer.singleShot(4000, self.f2)
>
>
> app = QtGui.QApplication(sys.argv)
> widget = QtGui.QWidget()
> layout = QtGui.QVBoxLayout()
> buttons = {}
> count = 0
> msg_label = {}
> sk = main()
> sk.f2()
> widget.show()
> sys.exit(app.exec_())

Don't recreate the widget over and over again. 

Create it once, and just change the label with setText().

Pete