python - Pyqt how to get a widget's dimensions

Question

I am currently developing an application in which i cannot use modal windows (due to some application constraints). However, in some cases i would like to simulate a popup window. To do so i dynamically create a widget that has the centralwidget as parent and i use the move() method to place it where i want. I would like to know if there is a way to get a widget's dimensions at a given time (considering the mainWindow can be resized at any time) so that i will be able to center the placeholder popup (a simple widget) at the middle of the centralwidget.

Thank you

Answer 1

For getting Qt Widget size:

import sys
from PyQt4 import QtGui, QtCore

app = QtGui.QApplication(sys.argv)

mainWindow = QtGui.QWidget()
width = mainWindow.frameGeometry().width()
height = mainWindow.frameGeometry().height()