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本文实例讲述了Python wxPython库消息对话框MessageDialog用法。分享给大家供大家参考，具体如下：

消息对话框即我们平时说的Messagebox，看看它的原型，下面是wxWidgets中的原型定义，C++风格，与python风格的区别就是wx前缀与后面名称直接相连，例如wxMessageDialog，在wxpython中使用时就是wx.MessageDialog

wxMessageDialog(wxWindow* parent, const wxString& message, const wxString& caption = "Message box", long style = wxOK | wxCANCEL, const wxPoint& pos = wxDefaultPosition)

其各参数不多做介绍，主要看看ShowModal()方法，它使用应用程序在对话框关闭前不能响应其它窗口的用户事件，返回一个整数，取值如下：

wx.ID_YES, wx.ID_NO, wx.ID_CANCEL, wx.ID_OK。

另外，style的取值主要有以下几种：

wxOK	Show an OK button.
wxCANCEL	Show a Cancel button.
wxYES_NO	Show Yes and No buttons.
wxYES_DEFAULT	Used with wxYES_NO, makes Yes button the default - which is the default behaviour.
wxNO_DEFAULT	Used with wxYES_NO, makes No button the default.
wxICON_EXCLAMATION	Shows an exclamation mark icon.
wxICON_HAND	Shows an error icon.
wxICON_ERROR	Shows an error icon - the same as wxICON_HAND.
wxICON_QUESTION	Shows a question mark icon.
wxICON_INFORMATION	Shows an information (i) icon.
wxSTAY_ON_TOP	The message box stays on top of all other window, even those of the other applications (Windows only).

还是看一个例子：

代码：

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import wx
class MyFrame(wx.Frame):
 def __init__(self, parent, id):
  wx.Frame.__init__(self, parent, id, u'测试面板Panel', size = (600, 300))
  #创建面板
  panel = wx.Panel(self)
  #在Panel上添加Button
  button = wx.Button(panel, label = u'关闭', pos = (150, 60), size = (100, 60))
  #绑定单击事件
  self.Bind(wx.EVT_BUTTON, self.OnCloseMe, button)
 def OnCloseMe(self, event):
  dlg = wx.MessageDialog(None, u"消息对话框测试", u"标题信息", wx.YES_NO | wx.ICON_QUESTION)
  if dlg.ShowModal() == wx.ID_YES:
   self.Close(True)
  dlg.Destroy()
if __name__ == '__main__':
 app = wx.PySimpleApp()
 frame = MyFrame(parent = None, id = -1)
 frame.Show()
 app.MainLoop()

测试：