def configure_subplots(self): win = SubWindow(mainWin.workSpace) mainWin.workSpace.addSubWindow(win) win.setAttribute(Qt.WA_DeleteOnClose) win.setWindowTitle(QtCore.QCoreApplication.translate('MatPlot', 'Subplot Configuration Tool')) image = os.path.join(imagepath,'matplotlib.png' ) win.setWindowIcon(QtGui.QIcon(image)) tool = SubplotToolQt(self.canvas.figure, win) win.setWidget(tool) win.setMinimumSize(300, 200) win.setSizePolicy(QtGui.QSizePolicy.Preferred, QtGui.QSizePolicy.Preferred) win.show()