开始第一个wxpython的GUI程序吧

1 第一个应用程序 “Hello,world”

1 import wx
2 app = wx.App(False)
3 frame = wx.Frame(None, wx.ID_ANY, "Hollo World")
4 frame.Show(True)
5 app.MainLoop()
1 import wx
2 app = wx.App(False)
3 frame = wx.Frame(None, wx.ID_ANY, "Hollo World")
4 frame.Show(True)
5 app.MainLoop()

2是创造一个wx.App实例。参数是“False”的意思是不将stdout和stderr重定向到一个窗口,这个参数是“True”对这个例子没有影响。
3创建一个顶级窗口,语法为x.Frame(parent,ID,标题)。这个例子中wx.ID_ANY wxWidgets为我们挑选一个id。
4显示窗口
5主循环,处理事件

2输入多行文字wx.TextCtrl

import wx
class my_frame(wx.Frame):
    """We simple derive a new class of Frame"""
    def __init__(self,parent, title):
        wx.Frame.__init__(self, parent, title=title,size=(300,100))
        self.control = wx.TextCtrl(self, style=wx.TE_MULTILINE)
        self.Show(True)

app = wx.App(False)
frame = my_frame (None,'Small edior')
app.MainLoop()
import wx
class my_frame(wx.Frame):
    """We simple derive a new class of Frame"""
    def __init__(self,parent, title):
        wx.Frame.__init__(self, parent, title=title,size=(300,100))
        self.control = wx.TextCtrl(self, style=wx.TE_MULTILINE)
        self.Show(True)

app = wx.App(False)
frame = my_frame (None,'Small edior')
app.MainLoop()

继承来自wx.Frame的__init__方法。声明一个wx.TextCtrl控件
(简单的文本编辑控件)

3增加一个菜单

import wx
class my_frame(wx.Frame):
    """We simple derive a new class of Frame"""
    def __init__(self,parent, title):
        wx.Frame.__init__(self, parent, title=title,size=(300,200))
        self.control = wx.TextCtrl(self, style=wx.TE_MULTILINE,)
        self.Show(True)
        self.CreateStatusBar()#创建窗口底部的状态栏
        filemenu = wx.Menu()
        filemenu.Append(wx.ID_EXIT, "Exit", "Termanate the program")
        filemenu.AppendSeparator()
        filemenu.Append(wx.ID_ABOUT, "About", "Information about this program")#设置菜单的内容
        menuBar = wx.MenuBar()
        menuBar.Append(filemenu, u"设置")
        self.SetMenuBar(menuBar)#创建菜单条
        self.Show(True)

app = wx.App(False)
frame = my_frame(None, 'Small edior')
app.MainLoop()
import wx
class my_frame(wx.Frame):
    """We simple derive a new class of Frame"""
    def __init__(self,parent, title):
        wx.Frame.__init__(self, parent, title=title,size=(300,200))
        self.control = wx.TextCtrl(self, style=wx.TE_MULTILINE,)
        self.Show(True)
        self.CreateStatusBar()#创建窗口底部的状态栏
        filemenu = wx.Menu()
        filemenu.Append(wx.ID_EXIT, "Exit", "Termanate the program")
        filemenu.AppendSeparator()
        filemenu.Append(wx.ID_ABOUT, "About", "Information about this program")#设置菜单的内容
        menuBar = wx.MenuBar()
        menuBar.Append(filemenu, u"设置")
        self.SetMenuBar(menuBar)#创建菜单条
        self.Show(True)

app = wx.App(False)
frame = my_frame(None, 'Small edior')
app.MainLoop()

wx.ID_ABOUT和wx.id_EXIT这是标准wxWidgets提供的id,这样做的好处是可以保证兼容性,多个平台可以运行

4事件处理


import wx
class my_frame(wx.Frame):
    """We simple derive a new class of Frame"""
    def __init__(self,parent, title):
        wx.Frame.__init__(self, parent, title=title,size=(300,200))
        self.control = wx.TextCtrl(self, style=wx.TE_MULTILINE,)
        self.Show(True)
        self.CreateStatusBar()#创建窗口底部的状态栏

        filemenu = wx.Menu()
        menu_exit = filemenu.Append(wx.ID_EXIT, "Exit", "Termanate the program")
        filemenu.AppendSeparator()
        menu_about = filemenu.Append(wx.ID_ABOUT, "About", "Information about this program")#设置菜单的内容

        menuBar = wx.MenuBar()
        menuBar.Append(filemenu, u"设置")
        self.SetMenuBar(menuBar)#创建菜单条
        self.Show(True)

        self.Bind(wx.EVT_MENU, self.on_about, menu_about)
        self.Bind(wx.EVT_MENU, self.on_exit, menu_exit)#把出现的事件,同需要处理的函数连接起来

    def on_about(self,e):#about按钮的处理函数
        dlg = wx.MessageDialog(self,"A samll text editor", "About sample Editor",wx.OK)#创建一个对话框,有一个ok的按钮
        dlg.ShowModal()#显示对话框
        dlg.Destroy()#完成后,销毁它。

    def on_exit(self,e):
        self.Close(True)


app = wx.App(False)
frame = my_frame(None, 'Small edior')
app.MainLoop()
import wx
class my_frame(wx.Frame):
    """We simple derive a new class of Frame"""
    def __init__(self,parent, title):
        wx.Frame.__init__(self, parent, title=title,size=(300,200))
        self.control = wx.TextCtrl(self, style=wx.TE_MULTILINE,)
        self.Show(True)
        self.CreateStatusBar()#创建窗口底部的状态栏

        filemenu = wx.Menu()
        menu_exit = filemenu.Append(wx.ID_EXIT, "Exit", "Termanate the program")
        filemenu.AppendSeparator()
        menu_about = filemenu.Append(wx.ID_ABOUT, "About", "Information about this program")#设置菜单的内容

        menuBar = wx.MenuBar()
        menuBar.Append(filemenu, u"设置")
        self.SetMenuBar(menuBar)#创建菜单条
        self.Show(True)

        self.Bind(wx.EVT_MENU, self.on_about, menu_about)
        self.Bind(wx.EVT_MENU, self.on_exit, menu_exit)#把出现的事件,同需要处理的函数连接起来

    def on_about(self,e):#about按钮的处理函数
        dlg = wx.MessageDialog(self,"A samll text editor", "About sample Editor",wx.OK)#创建一个对话框,有一个ok的按钮
        dlg.ShowModal()#显示对话框
        dlg.Destroy()#完成后,销毁它。

    def on_exit(self,e):
        self.Close(True)


app = wx.App(False)
frame = my_frame(None, 'Small edior')
app.MainLoop()

第一步是设定事件,然后设定事件出现后应该执行什么操作,最后把事件和操作连接起来。

5弹出对话框,选择要编辑的文件

def on_open(self,e):
        """open a file"""
        self.dirname = ''
        dlg = wx.FileDialog(self,"Choose a file", self.dirname, "","*.*",wx.OPEN)#调用一个函数打开对话框
        if dlg.ShowModal() == wx.ID_OK:
            self.filename = dlg.GetFilename()
            self.dirname = dlg.GetDirectory()
            f = open(os.path.join(self.dirname,self.filename),"r")
        dlg.Destroy()
def on_open(self,e):
        """open a file"""
        self.dirname = ''
        dlg = wx.FileDialog(self,"Choose a file", self.dirname, "","*.*",wx.OPEN)#调用一个函数打开对话框
        if dlg.ShowModal() == wx.ID_OK:
            self.filename = dlg.GetFilename()
            self.dirname = dlg.GetDirectory()
            f = open(os.path.join(self.dirname,self.filename),"r")
        dlg.Destroy()

然后把这个方法和添加进入菜单和一个按钮事件绑定起来
完整代码

import wx
import os
class my_frame(wx.Frame):
    """This is a simple text editor"""
    def __init__(self,parent, title):
        wx.Frame.__init__(self, parent, title=title,size=(300,200))
        self.control = wx.TextCtrl(self, style=wx.TE_MULTILINE,)
        self.Show(True)
        self.CreateStatusBar()#创建窗口底部的状态栏

        filemenu = wx.Menu()
        menu_open = filemenu.Append(wx.ID_OPEN,U"打开文件", " ")
        menu_exit = filemenu.Append(wx.ID_EXIT, "Exit", "Termanate the program")
        filemenu.AppendSeparator()
        menu_about = filemenu.Append(wx.ID_ABOUT, "About", "Information about this program")#设置菜单的内容

        menuBar = wx.MenuBar()
        menuBar.Append(filemenu, u"设置")
        self.SetMenuBar(menuBar)#创建菜单条
        self.Show(True)

        self.Bind(wx.EVT_MENU,self.on_open,menu_open)
        self.Bind(wx.EVT_MENU, self.on_about, menu_about)
        self.Bind(wx.EVT_MENU, self.on_exit, menu_exit)#把出现的事件,同需要处理的函数连接起来

    def on_about(self,e):#about按钮的处理函数
        dlg = wx.MessageDialog(self,"A samll text editor", "About sample Editor",wx.OK)#创建一个对话框,有一个ok的按钮
        dlg.ShowModal()#显示对话框
        dlg.Destroy()#完成后,销毁它。

    def on_exit(self,e):
        self.Close(True)

    def on_open(self,e):
        """open a file"""
        self.dirname = ''
        dlg = wx.FileDialog(self,"Choose a file", self.dirname, "","*.*",wx.OPEN)#调用一个函数打开对话框
        if dlg.ShowModal() == wx.ID_OK:
            self.filename = dlg.GetFilename()
            self.dirname = dlg.GetDirectory()
            f = open(os.path.join(self.dirname,self.filename),"r")
        dlg.Destroy()


app = wx.App(False)
frame = my_frame(None, 'Small edior')
app.MainLoop()
import wx
import os
class my_frame(wx.Frame):
    """This is a simple text editor"""
    def __init__(self,parent, title):
        wx.Frame.__init__(self, parent, title=title,size=(300,200))
        self.control = wx.TextCtrl(self, style=wx.TE_MULTILINE,)
        self.Show(True)
        self.CreateStatusBar()#创建窗口底部的状态栏

        filemenu = wx.Menu()
        menu_open = filemenu.Append(wx.ID_OPEN,U"打开文件", " ")
        menu_exit = filemenu.Append(wx.ID_EXIT, "Exit", "Termanate the program")
        filemenu.AppendSeparator()
        menu_about = filemenu.Append(wx.ID_ABOUT, "About", "Information about this program")#设置菜单的内容

        menuBar = wx.MenuBar()
        menuBar.Append(filemenu, u"设置")
        self.SetMenuBar(menuBar)#创建菜单条
        self.Show(True)

        self.Bind(wx.EVT_MENU,self.on_open,menu_open)
        self.Bind(wx.EVT_MENU, self.on_about, menu_about)
        self.Bind(wx.EVT_MENU, self.on_exit, menu_exit)#把出现的事件,同需要处理的函数连接起来

    def on_about(self,e):#about按钮的处理函数
        dlg = wx.MessageDialog(self,"A samll text editor", "About sample Editor",wx.OK)#创建一个对话框,有一个ok的按钮
        dlg.ShowModal()#显示对话框
        dlg.Destroy()#完成后,销毁它。

    def on_exit(self,e):
        self.Close(True)

    def on_open(self,e):
        """open a file"""
        self.dirname = ''
        dlg = wx.FileDialog(self,"Choose a file", self.dirname, "","*.*",wx.OPEN)#调用一个函数打开对话框
        if dlg.ShowModal() == wx.ID_OK:
            self.filename = dlg.GetFilename()
            self.dirname = dlg.GetDirectory()
            f = open(os.path.join(self.dirname,self.filename),"r")
        dlg.Destroy()


app = wx.App(False)
frame = my_frame(None, 'Small edior')
app.MainLoop()

6.把文件读取出来的数据,显示在文本框内。并加入保存文件的功能。打开文件时使用decode(),保存时使用encode(),使用unicode防止因为中文出现的错误。

# -*- coding: utf-8 -*-
import wx
import os
class my_frame(wx.Frame):
    """This is a simple text editor"""
    def __init__(self,parent, title):
        wx.Frame.__init__(self, parent, title=title,size=(300,200))
        self.control = wx.TextCtrl(self, -1,u"请先打开要修改的文件", style=wx.TE_MULTILINE,)
        self.Show(True)
        self.CreateStatusBar()#创建窗口底部的状态栏

        filemenu = wx.Menu()
        menu_open = filemenu.Append(wx.ID_OPEN, U"打开文件", " ")
        menu_save = filemenu.Append(wx.ID_SAVE, U"保存修改",)
        menu_exit = filemenu.Append(wx.ID_EXIT, "Exit", "Termanate the program")
        filemenu.AppendSeparator()
        menu_about = filemenu.Append(wx.ID_ABOUT, "About", "Information about this program")#设置菜单的内容

        menuBar = wx.MenuBar()
        menuBar.Append(filemenu, u"选项")
        self.SetMenuBar(menuBar)#创建菜单条
        self.Show(True)

        self.Bind(wx.EVT_MENU, self.on_open, menu_open)
        self.Bind(wx.EVT_MENU, self.on_about, menu_about)
        self.Bind(wx.EVT_MENU, self.on_exit, menu_exit)#把出现的事件,同需要处理的函数连接起来
        self.Bind(wx.EVT_MENU, self.on_save, menu_save)

    def on_about(self,e):#about按钮的处理函数
        dlg = wx.MessageDialog(self,"A samll text editor", "About sample Editor",wx.OK)#创建一个对话框,有一个ok的按钮
        dlg.ShowModal()#显示对话框
        dlg.Destroy()#完成后,销毁它。

    def on_exit(self,e):
        self.Close(True)

    def on_open(self,e):
        """open a file"""
        self.dirname = ''
        dlg = wx.FileDialog(self,"Choose a file", self.dirname, "","*.*",wx.OPEN)#调用一个函数打开对话框
        if dlg.ShowModal() == wx.ID_OK:
            self.filename = dlg.GetFilename()
            self.dirname = dlg.GetDirectory()
            self.address = os.path.join(self.dirname,self.filename)
            f = open(self.address,"r")
            file = (f.read()).decode(encoding='utf-8')#解码,使文件可以读取中文
            f.close()
            self.control.Clear()
            self.control.AppendText(file)#把打开的文件内容显示在多行文本框内
        dlg.Destroy()

    def on_save(self, e):
        date = (self.control.GetValue()).encode(encoding="utf-8")#编码,使中文可以正确存储
        f = open(self.address, 'w')
        f.write(date)
        f.close()#把文本框内的数据写入并关闭文件
        dlg = wx.MessageDialog(self, u"文件已经成功保存", u"消息提示", wx.OK)
        dlg.ShowModal()
        dlg.Destroy()
        self.control.Clear()
        self.control.AppendText(u'欢迎使用此软件,作者即刻')

app = wx.App(False)
frame = my_frame(None, u'迷你文本编辑器')
app.MainLoop()
# -*- coding: utf-8 -*-
import wx
import os
class my_frame(wx.Frame):
    """This is a simple text editor"""
    def __init__(self,parent, title):
        wx.Frame.__init__(self, parent, title=title,size=(300,200))
        self.control = wx.TextCtrl(self, -1,u"请先打开要修改的文件", style=wx.TE_MULTILINE,)
        self.Show(True)
        self.CreateStatusBar()#创建窗口底部的状态栏

        filemenu = wx.Menu()
        menu_open = filemenu.Append(wx.ID_OPEN, U"打开文件", " ")
        menu_save = filemenu.Append(wx.ID_SAVE, U"保存修改",)
        menu_exit = filemenu.Append(wx.ID_EXIT, "Exit", "Termanate the program")
        filemenu.AppendSeparator()
        menu_about = filemenu.Append(wx.ID_ABOUT, "About", "Information about this program")#设置菜单的内容

        menuBar = wx.MenuBar()
        menuBar.Append(filemenu, u"选项")
        self.SetMenuBar(menuBar)#创建菜单条
        self.Show(True)

        self.Bind(wx.EVT_MENU, self.on_open, menu_open)
        self.Bind(wx.EVT_MENU, self.on_about, menu_about)
        self.Bind(wx.EVT_MENU, self.on_exit, menu_exit)#把出现的事件,同需要处理的函数连接起来
        self.Bind(wx.EVT_MENU, self.on_save, menu_save)

    def on_about(self,e):#about按钮的处理函数
        dlg = wx.MessageDialog(self,"A samll text editor", "About sample Editor",wx.OK)#创建一个对话框,有一个ok的按钮
        dlg.ShowModal()#显示对话框
        dlg.Destroy()#完成后,销毁它。

    def on_exit(self,e):
        self.Close(True)

    def on_open(self,e):
        """open a file"""
        self.dirname = ''
        dlg = wx.FileDialog(self,"Choose a file", self.dirname, "","*.*",wx.OPEN)#调用一个函数打开对话框
        if dlg.ShowModal() == wx.ID_OK:
            self.filename = dlg.GetFilename()
            self.dirname = dlg.GetDirectory()
            self.address = os.path.join(self.dirname,self.filename)
            f = open(self.address,"r")
            file = (f.read()).decode(encoding='utf-8')#解码,使文件可以读取中文
            f.close()
            self.control.Clear()
            self.control.AppendText(file)#把打开的文件内容显示在多行文本框内
        dlg.Destroy()

    def on_save(self, e):
        date = (self.control.GetValue()).encode(encoding="utf-8")#编码,使中文可以正确存储
        f = open(self.address, 'w')
        f.write(date)
        f.close()#把文本框内的数据写入并关闭文件
        dlg = wx.MessageDialog(self, u"文件已经成功保存", u"消息提示", wx.OK)
        dlg.ShowModal()
        dlg.Destroy()
        self.control.Clear()
        self.control.AppendText(u'欢迎使用此软件,作者即刻')

app = wx.App(False)
frame = my_frame(None, u'迷你文本编辑器')
app.MainLoop()