[PyQt] convert windows app to PyQt Widget

M Chauhan mrch81 at gmail.com
Mon Nov 29 15:31:17 GMT 2010

Hello all,

I have been trying to convert an app launched by windows (for ex. calc) into
a QT Widget. In docs, I found a "find()" command which should do that. (

But "find" returns a None.

Below you will find an example code for calculator app.  May be I am not
doing something right.
Any pointers please? (I am using : PyQT 4.7.1, Windows XP, Python 2.6.4)

Ex code:

import os , time, win32gui
from subprocess import Popen
from PyQt4 import QtGui
root_dir  = os.environ.get("SystemRoot",r"C:\WINDOWS")
calc = r'%s\System32\calc.exe' % root_dir
#Get window handle of calc window
calc_hwnd = win32gui.FindWindow(None, "Calculator")
#Creat QT Application
a = QtGui.QApplication([])
mainwin = QtGui.QMainWindow()
#Set QT mainwindow as parent of calc window
win32gui.SetParent(calc_hwnd, int(mainwin.winId()))
#Convert calc into QT widget
wgt = mainwin.find(calc_hwnd)
#XXX: following print gives "None"
*print type(wgt)*

Thanks and wishes,
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