wxPython:消息对话框MessageDialog
最后更新于：2022-04-01 19:41:16
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](http://www.cnblogs.com/dyx1024/admin/)* parent, const [wxString](http://www.cnblogs.com/dyx1024/admin/)& message, const [wxString](http://www.cnblogs.com/dyx1024/admin/)& caption = "Message box", long style = wxOK | wxCANCEL, const [wxPoint](http://www.cnblogs.com/dyx1024/admin/)& 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：
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