[PyQt] Updating Qlabel in widget

[uahmed]

hi

Thanks for the reply , QLabel will be created once only when count is equal
to 2 . Firstly i was thinking same that i make Qlabel first and then recall
them and change only text but if i do that then i have to create nearly
40-60 Qlabel to cover all the loop holes so i need to create it on run time
to avoid making lots of Qlabels

On Thu, Aug 25, 2011 at 3:26 PM, Hans-Peter Jansen <hpj at urpla.net> wrote:

> 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
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