wxPython和PyQt的Hello World例子比较

wxPython和PyQt分别是wxWidgets和Qt的python绑定，wxWidgets和Qt都是跨平台的GUI库，不过前者是开源免费的，而后者是基于商业License
让我们分别看看wxPython和PyQt的Hello World程序

wxPython
首先去 http://www.python.org下载Windows下的python2.5，然后去 http://www.wxpython.org下载相应的Windows安装包
装好后写个hellowx.py看看效果:

import wx

class MyFrame(wx.Frame):
    def __init__(self, parent, title):

        wx.Frame.__init__(self, parent, -1, title, pos=(150, 150), size=(350, 200))

        menuBar = wx.MenuBar()
        self.SetMenuBar(menuBar)
        menu = wx.Menu()
        menu.Append(wx.ID_EXIT, "E&xit", "Exit this application")
        self.Bind(wx.EVT_MENU, self.OnTimeToClose, id=wx.ID_EXIT)
        menuBar.Append(menu, "&File")

        panel = wx.Panel(self)
        text = wx.StaticText(panel, -1, "Hello wxPython!")
        text.SetFont(wx.Font(12, wx.SWISS, wx.NORMAL, wx.BOLD))
        text.SetSize(text.GetBestSize())
        panel.Layout()

    def OnTimeToClose(self, evt):
        self.Close()

class MyApp(wx.App):
    def OnInit(self):
        frame = MyFrame(None, "Hello wxPython!")
        self.SetTopWindow(frame)
        frame.Show(True)
        return True
        
app = MyApp()
app.MainLoop()

App->Frame->MenuBar/Panel，结构很清晰

PyQt
去 http://www.quadgames.com/download/pythonqt/下载Windows的PyQt安装包，PyQtGPL10.exe目前只支持到Python2.4
然后写个helloqt.py看看效果:

import sys
from qt import *

class HelloButton(QPushButton):
    def __init__(self, *args):
        QPushButton.__init__(self, *args)
        self.setText("Hello World")

class HelloWindow(QMainWindow):
    def __init__(self, *args):
        QMainWindow.__init__(self, *args)
        self.button = HelloButton(self)
        self.setCentralWidget(self.button)

def main(args):
    app = QApplication(args)
    win = HelloWindow()
    win.show()
    app.connect(app, SIGNAL("lastWindowClosed()"),
    app, SLOT("quit()"))
    app.exec_loop()

if __name__ == "__main__":
    main(sys.argv)

也是App->Window->MenuBar的模式，同wx没多大区别

体验
总体觉得Qt的类名起的有点怪异，wxPython看起来很优美