qdialog_test.py

from PySide import QtCore, QtGui
import sys


class MainWindow(QtGui.QMainWindow):

    def __init__(self):
        super(MainWindow, self).__init__()

        self.initUI()

    def initUI(self):
        
        baseWidget = QtGui.QWidget()
        self.setCentralWidget(baseWidget)

        button = QtGui.QPushButton('Dialog')
        button.clicked.connect(self.openDialog)

        layout = QtGui.QVBoxLayout()
        layout.addWidget(button)
        baseWidget.setLayout(layout)

        self.resize(500, 300)


    def openDialog(self):
        dialog = QtGui.QDialog(self, QtCore.Qt.CustomizeWindowHint | QtCore.Qt.WindowTitleHint)
        dialog.resize(200,300)

        buttonBox = QtGui.QDialogButtonBox(dialog)
        buttonBox.setStandardButtons(QtGui.QDialogButtonBox.Cancel|QtGui.QDialogButtonBox.Ok)

        QtCore.QObject.connect(buttonBox, QtCore.SIGNAL("accepted()"), self.saveConfig)
        QtCore.QObject.connect(buttonBox, QtCore.SIGNAL("rejected()"), dialog.reject)
        dialog.show()

    def saveConfig(self):
        print('test')


def main(*argv):
    app = QtGui.QApplication(sys.argv).instance()
    if app is None:
        app = QtGui.QApplication()
    ui = MainWindow()
    ui.show()

    app.exec_()
    

if __name__ == '__main__':
    main(sys.argv[1:])