在运行时在 wxPython 中添加复选框

本文介绍了在运行时在 wxPython 中添加复选框的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我对 wxPython 很陌生，所以我用 wxFormBuilder 生成 GUI 并尝试从某个文件夹中获取扩展名并使用这些扩展名创建复选框，但我得到了

NameError: 全局名称 'bSizer_Ext' 未定义

任何建议将不胜感激.谢谢.

# -*- 编码:utf-8 -*-########################################################################## 使用 wxFormBuilder 生成的 Python 代码(2011 年 6 月 30 日版本)## http://www.wxformbuilder.org/#### 请不要不要"编辑这个文件！########################################################################进口 wx导入操作系统########################################################################## 课堂测试########################################################################类测试( wx.Frame ):扩展=[]def __init__(自我，父母):wx.Frame.__init__ ( self, parent, id = wx.ID_ANY, title = u"Test", pos = wx.DefaultPosition, size = wx.Size(600,300), style = wx.DEFAULT_FRAME_STYLE|wx.TAB_TRAVERSAL)self.SetSizeHintsSz( wx.DefaultSize, wx.DefaultSize )bSizer1 = wx.BoxSizer( wx.VERTICAL )fg_DirSizer = wx.FlexGridSizer( 0, 2, 0, 2 )fg_DirSizer.AddGrowableCol( 1 )fg_DirSizer.SetFlexibleDirection( wx.BOTH )fg_DirSizer.SetNonFlexibleGrowMode( wx.FLEX_GROWMODE_SPECIFIED )self.m_staticText_root = wx.StaticText( self, wx.ID_ANY, u"Root Directory", wx.DefaultPosition, wx.DefaultSize, 0 )self.m_staticText_root.Wrap( -1 )fg_DirSizer.Add( self.m_staticText_root, 0, wx.ALL, 5 )self.root_dir_pick = wx.DirPickerCtrl( self, wx.ID_ANY, wx.EmptyString, u"选择根文件夹", wx.DefaultPosition, wx.DefaultSize, wx.DIRP_DEFAULT_STYLE|wx.DIRP_DIR_MUST_EXIST|wx.TAB_TRAVERSAL)self.root_dir_pick.SetMinSize(wx.Size(450,25))fg_DirSizer.Add( self.root_dir_pick, 0, wx.ALL, 5 )bSizer1.Add( fg_DirSizer, 0, wx.EXPAND, 5 )bSizer_Ext = wx.BoxSizer( wx.VERTICAL )bSizer1.Add( bSizer_Ext, 1, wx.EXPAND, 5 )self.SetSizer( bSizer1 )self.Layout()self.Centre( wx.BOTH )自我展示(真)# 连接事件self.root_dir_pick.Bind( wx.EVT_DIRPICKER_CHANGED, self._ScanRoot )def __del__(自我):经过# 虚拟事件处理程序，在您的派生类中覆盖它们def _ScanRoot( self, event ):分机=''对于 os.walk(self.root_dir_pick.GetPath()) 中的 root、dirs、文件:对于文件中的 f:尝试:ext = os.path.splitext(f)self.extensions.index(ext[1])除了:self.extensions.append(ext[1])对于 self.extensions 中的 ext1:chb=wx.CheckBox( bSizer_Ext, wx.ID_ANY, ext1, wx.DefaultPosition, wx.DefaultSize, 0 )如果 __name__ == "__main__":app = wx.App()框架 = 测试(无)app.MainLoop()

解决方案

修改_ScanRoot中最后一个for循环如图:

 用于 self.extensions 中的 ext1:chb = wx.CheckBox(self, wx.ID_ANY, ext1, wx.DefaultPosition, wx.DefaultSize, 0 )self.bSizer_Ext.Add(chb)self.Layout()

同时在程序中用self.bSizer_Ext

修改bSizer_Ext的所有实例

此代码尚未起作用.您需要:

将复选框绑定到事件以检测点击
保持每个复选框对象可用于在需要时对其进行修改(这实际上是可选的)

例如，这是一个替代方案:

 def OnCheck(self, evt):"""在这里我将决定采取哪些行动"""obj = evt.GetEventObject()如果 obj.IsChecked():打印%s 选定"% obj.Label别的:打印%s 取消选择"% obj.Label# 虚拟事件处理程序，在您的派生类中覆盖它们def _ScanRoot( self, event ):分机 = ''对于 os.walk(self.root_dir_pick.GetPath()) 中的根、目录、文件:对于文件中的 f:尝试:ext = os.path.splitext(f)self.extensions.index(ext[1])除了:self.extensions.append(ext[1])对于 self.extensions 中的 ext1:chb = wx.CheckBox(self, wx.ID_ANY, ext1, wx.DefaultPosition, wx.DefaultSize, 0 )self.bSizer_Ext.Add(chb)self.Bind(wx.EVT_CHECKBOX, self.OnCheck, chb)self.Layout()

I am pretty new to wxPython, so I generate GUI with wxFormBuilder and try to get extension from some folder and to create checkbox with these exts, but I got

Any suggestion will be appreciated. Thank you.

# -*- coding: utf-8 -*-

###########################################################################
## Python code generated with wxFormBuilder (version Jun 30 2011)
## http://www.wxformbuilder.org/
##
## PLEASE DO "NOT" EDIT THIS FILE!
###########################################################################

import wx
import os

###########################################################################
## Class Test
###########################################################################

class Test ( wx.Frame ):
    extensions=[]
    def __init__( self, parent ):
        wx.Frame.__init__ ( self, parent, id = wx.ID_ANY, title = u"Test", pos = wx.DefaultPosition, size = wx.Size( 600,300 ), style = wx.DEFAULT_FRAME_STYLE|wx.TAB_TRAVERSAL )

        self.SetSizeHintsSz( wx.DefaultSize, wx.DefaultSize )

        bSizer1 = wx.BoxSizer( wx.VERTICAL )

        fg_DirSizer = wx.FlexGridSizer( 0, 2, 0, 2 )
        fg_DirSizer.AddGrowableCol( 1 )
        fg_DirSizer.SetFlexibleDirection( wx.BOTH )
        fg_DirSizer.SetNonFlexibleGrowMode( wx.FLEX_GROWMODE_SPECIFIED )

        self.m_staticText_root = wx.StaticText( self, wx.ID_ANY, u"Root Directory", wx.DefaultPosition, wx.DefaultSize, 0 )
        self.m_staticText_root.Wrap( -1 )
        fg_DirSizer.Add( self.m_staticText_root, 0, wx.ALL, 5 )

        self.root_dir_pick = wx.DirPickerCtrl( self, wx.ID_ANY, wx.EmptyString, u"Select root folder", wx.DefaultPosition, wx.DefaultSize, wx.DIRP_DEFAULT_STYLE|wx.DIRP_DIR_MUST_EXIST|wx.TAB_TRAVERSAL )
        self.root_dir_pick.SetMinSize( wx.Size( 450,25 ) )

        fg_DirSizer.Add( self.root_dir_pick, 0, wx.ALL, 5 )

        bSizer1.Add( fg_DirSizer, 0, wx.EXPAND, 5 )

        bSizer_Ext = wx.BoxSizer( wx.VERTICAL )

        bSizer1.Add( bSizer_Ext, 1, wx.EXPAND, 5 )

        self.SetSizer( bSizer1 )
        self.Layout()

        self.Centre( wx.BOTH )
        self.Show(True)

        # Connect Events
        self.root_dir_pick.Bind( wx.EVT_DIRPICKER_CHANGED, self._ScanRoot )

    def __del__( self ):
        pass


    # Virtual event handlers, overide them in your derived class
    def _ScanRoot( self, event ):
        ext=''
        for root,dirs,files in os.walk(self.root_dir_pick.GetPath()):
            for f in files:
                try:
                    ext = os.path.splitext(f)
                    self.extensions.index(ext[1])
                except:
                    self.extensions.append(ext[1])
        for ext1 in self.extensions:
            chb=wx.CheckBox( bSizer_Ext, wx.ID_ANY, ext1, wx.DefaultPosition, wx.DefaultSize, 0 )


if __name__ == "__main__":
    app = wx.App()
    frame = Test(None)
    app.MainLoop()

解决方案

Modify the last for loop in _ScanRoot as shown:

for ext1 in self.extensions:
    chb = wx.CheckBox(self, wx.ID_ANY, ext1, wx.DefaultPosition, wx.DefaultSize, 0 )
    self.bSizer_Ext.Add(chb)
self.Layout()

Also modify in the program all instances of bSizer_Ext with self.bSizer_Ext

This code is no functional yet. You need to:

Bind your checkboxes to an event in order to detect clicks
Keep each checkbox object available to modify them if needed (this is actually optional)

For example, this is an alternative:

    def OnCheck(self, evt):
        """Here I will decide which actions to take"""
        obj = evt.GetEventObject()
        if obj.IsChecked():
            print "%s selected" % obj.Label
        else:
            print "%s deselected" % obj.Label

    # Virtual event handlers, overide them in your derived class
    def _ScanRoot( self, event ):
        ext = ''
        for root, dirs, files in os.walk(self.root_dir_pick.GetPath()):
            for f in files:
                try:
                    ext = os.path.splitext(f)
                    self.extensions.index(ext[1])
                except:
                    self.extensions.append(ext[1])
        for ext1 in self.extensions:
            chb = wx.CheckBox(self, wx.ID_ANY, ext1, wx.DefaultPosition, wx.DefaultSize, 0 )
            self.bSizer_Ext.Add(chb)
            self.Bind(wx.EVT_CHECKBOX, self.OnCheck, chb)
        self.Layout()

这篇关于在运行时在 wxPython 中添加复选框的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！