wxPython编程学习笔记(07)wxPython Dialog 弹出对话

作者:J.sky · 发表于:
2018-12-25T13:17:28.000000Z
· 更新于:
2023-08-13T22:54:33.269783Z
· Tag: Python GUI

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wxPython dialogs 弹出对话框

程序中经常会遇到弹出对话框询问操作的场景,wxPython dialogs为此提供了应用的支持, wxPython dialogs有几种,常用的比如:wx.MessageBox wx.MessageDialog wx.Dialog wx.adv.AboutBox等。

dialog的创建

一般dialog都会配合Button使用,当按钮绑定事件后,在绑定事件的函数中创建应用即可,代码如下:

wx.MessageDialog(None, 'Download completed', 'Info', wx.OK)

其它类型的Dialog创建也类似如下代码,其中风格参数如下:

flag    meaning
wx.OK   show OK button
wx.CANCEL   show Cancel button
wx.YES_NO   show Yes, No buttons
wx.YES_DEFAULT  make Yes button the default
wx.NO_DEFAULT   make No button the default
wx.ICON_EXCLAMATION show an alert icon
wx.ICON_ERROR   show an error icon
wx.ICON_HAND    same as wx.ICON_ERROR
wx.ICON_INFORMATION show an info icon
wx.ICON_QUESTION    show a question icon

可以根据自己的需要进行组合,例如组合YES和NO,yes默认选择,并且加带图标的代码:wx.YES_NO|wx.YES_DEFAULT | wx.ICON_INFORMATION

MessageDialog 获取返回值

当点击对话框上的按钮后窗口就会关闭,我们需要获得关闭后的返回值,可以通过如下代码获得:

    dial = wx.MessageDialog(None, 'Are you sure to quit?', 'Question',
        wx.YES_NO | wx.YES_DEFAULT | wx.ICON_QUESTION)
    ret = dial.ShowModal()
    if ret == wx.ID_YES:
        print("YES")
    else:
        print("NO")

好啦,完整的代码在下边,大家可以跑跑看看。

Dialog和窗口间传递数据

遇到过一个在主窗口弹出Dialog的需求,因为是第一次用wxPython,所以不知道数据如何传送给主窗口,后来网上扒了扒发现了一些答案。 我这里的解决方案:

  1. 先在Dialog窗口中创建类属性,然后通过类属性传递给主窗口
  2. Dialog中创建一个属性self.ret=0,当点击按钮的时候设置其值为1,这样判断一下这个值,用来接收数据,如果为0就不接收。

具体可以参考下边的代码

import wx


class MyDialog(wx.Dialog):
    def __init__(self, *args, **kw):
        super(MyDialog, self).__init__(*args, **kw)
        self.ret = 0
        hbox = wx.BoxSizer(wx.HORIZONTAL)
        self.st = wx.TextCtrl(self, wx.ID_ANY, "111")
        self.bt = wx.Button(self, wx.ID_ANY, "提交数据")
        self.bt.Bind(wx.EVT_BUTTON,self.onButton)
        hbox.AddMany([(self.st),(self.bt)])
        self.SetSizer(hbox)

    def onButton(self,e):
        self.ret=1
        self.EndModal(1)

class HelloFrame(wx.Frame):
    def __init__(self, *args, **kw):
        # 调用父类的创建方法
        super(HelloFrame, self).__init__(*args, **kw)

        hbox = wx.BoxSizer(wx.VERTICAL)
        bt0 = wx.Button(self, 1, "wx.Dialog")
        bt1 = wx.Button(self, 1, "wx.Dialog")
        bt2 = wx.Button(self, 1, 'Error')
        bt3 = wx.Button(self, 1, 'Question')
        bt4 = wx.Button(self, 1, 'Alert')

        bt0.Bind(wx.EVT_BUTTON, self.onModal0)
        bt1.Bind(wx.EVT_BUTTON, self.onModal1)
        bt2.Bind(wx.EVT_BUTTON, self.showMessage1)
        bt3.Bind(wx.EVT_BUTTON, self.showMessage2)
        bt4.Bind(wx.EVT_BUTTON, self.showMessage3)

        hbox.AddMany([(bt0, 1, wx.EXPAND | wx.ALIGN_TOP), (bt1, 1, wx.EXPAND), (bt2, 1, wx.EXPAND), (bt3, 1, wx.EXPAND),
                      (bt4, 1, wx.EXPAND), ])
        self.SetSizer(hbox)

    def onModal0(self, event):
        '''模态'''
        myDialog= MyDialog(None, 22, title="Dialog")
        myDialog.ShowModal()
        if myDialog.ret == 1:
            print(myDialog.st.GetValue())
        else:
            print("888888")
        myDialog.Destroy()

    def onModal1(self, event):
        '''无模态'''
        wx.Dialog(self, 1, "Dialog", pos=(100, 100)).Show()

    def showMessage(self, e):
        smd = wx.MessageDialog(None, "This is a Message Box", "Message",
                               wx.YES_NO | wx.YES_DEFAULT | wx.ICON_INFORMATION)
        smd.ShowModal()

    def showMessage1(self, event):
        dial = wx.MessageDialog(None, 'Download completed', 'Info', wx.OK)
        ret = dial.ShowModal()
        if ret == wx.OK:
            print("OK")

    def showMessage2(self, event):
        dial = wx.MessageDialog(None, 'Are you sure to quit?', 'Question',
                                wx.YES_NO | wx.YES_DEFAULT | wx.ICON_QUESTION)
        ret = dial.ShowModal()
        if ret == wx.ID_YES:
            print("YES")
        else:
            print("NO")

    def showMessage3(self, event):
        dial = wx.MessageBox('Download completed', 'Info',
                             wx.OK | wx.ICON_INFORMATION)
        ret = dial
        if ret == wx.OK:
            print("OK")


def main():
    app = wx.App()
    frm = HelloFrame(None, title='wxPython Button', )
    frm.Show()  # 显示窗口
    app.MainLoop()  # 持续更新窗口


if __name__ == '__main__':
    main()

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