PyQt 学习笔记1——自定义窗口框架

　　自定义一个属于自己的窗口，初始化时自动设置好在屏幕中央显示，重写退出事件的触发器 closeEvent()，并增加了设置图标，简化设置标题的函数名，其它类可以继承它：

 1 # -*- coding: utf-8 -*-

 2 

 3 import time

 4 import sys

 5 from PyQt4 import QtGui, QtCore

 6 

 7 

 8 class MyQwidget(QtGui.QWidget):

 9 

10     def __init__(self, title=None, icon=None):

11         QtGui.QWidget.__init__(self)

12         self.setGeometry(300, 200, 600, 500)

13         self.center()

14         self.setTitle(title)

15         self.setIcon(icon)

16 

17     def setTitle(self, title=None):

18         if title != None:

19             self.setWindowTitle(title)

20 

21     def setIcon(self, icon=None):

22         if icon != None:

23             self.setWindowIcon(QtGui.QIcon(icon))

24 

25     def resize(self, width, height):

26         QtGui.QWidget.resize(self, width, height)

27         self.center()

28 

29     def center(self):

30         screen = QtGui.QDesktopWidget().screenGeometry()

31         size = self.geometry()

32         self.move((screen.width() - size.width()) / 2,

33                   (screen.height() - size.height()) / 2)

34 

35     def closeEvent(self, event):

36         reply = QtGui.QMessageBox.question(

37             self, 'Message', 'Are you sure to close?', QtGui.QMessageBox.Yes, QtGui.QMessageBox.No)

38         if reply == QtGui.QMessageBox.Yes:

39             event.accept()

40         else:

41             event.ignore()

42 

43 

44 class Widget2(MyQwidget):

45     pass

46 

47 

48 class MainWindow(QtGui.QMainWindow, MyQwidget):

49 

50     def __init__(self, parent=None):

51         QtGui.QMainWindow.__init__(self)

52         self.resize(300, 200)

53         self.setTitle('statusbar')

54         self.statusBar().showMessage('Ready')

55 

56 

57 app = QtGui.QApplication(sys.argv)

58 

59 w1 = Widget2(icon='image\\RK.gif', title='MyQwidget')

60 w1.show()

61 

62 w2 = Widget2()

63 w2.setTitle('hehe')

64 w2.setIcon('image\\fire.gif')

65 w2.resize(400, 300)

66 w2.show()

67 

68 w3 = MainWindow()

69 w3.show()

70 

71 sys.exit(app.exec_())

View Code

　　运行后截图如下：（均处于整个屏幕的中央）