python - 使用按钮 wxpython 更改面板

Question

import wx
import wx.grid as gridlib

########################################################################
class PanelOne(wx.Panel):
    """"""

    #----------------------------------------------------------------------
    def __init__(self, parent):
        """Constructor"""
        wx.Panel.__init__(self, parent=parent)
        txt = wx.TextCtrl(self)
        button =wx.Button(self, label="Save", pos=(200, 325))
        button.Bind(wx.EVT_BUTTON, self.onSwitchPanels)

########################################################################
class PanelTwo(wx.Panel):
    """"""

    #----------------------------------------------------------------------
    def __init__(self, parent):
        """Constructor"""
        wx.Panel.__init__(self, parent=parent)

        grid = gridlib.Grid(self)
        grid.CreateGrid(25,12)

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(grid, 0, wx.EXPAND)
        self.SetSizer(sizer)

########################################################################
class MyForm(wx.Frame):

    #----------------------------------------------------------------------
    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY,
                          "Panel Switcher Tutorial")

        self.panel_one = PanelOne(self)
        self.panel_two = PanelTwo(self)
        self.panel_two.Hide()

        self.sizer = wx.BoxSizer(wx.VERTICAL)
        self.sizer.Add(self.panel_one, 1, wx.EXPAND)
        self.sizer.Add(self.panel_two, 1, wx.EXPAND)
        self.SetSizer(self.sizer)

        menubar = wx.MenuBar()
        fileMenu = wx.Menu()
        switch_panels_menu_item = fileMenu.Append(wx.ID_ANY,
                                                  "Switch Panels",
                                                  "Some text")
        self.Bind(wx.EVT_MENU, self.onSwitchPanels,
                  switch_panels_menu_item)
        menubar.Append(fileMenu, '&File')
        self.SetMenuBar(menubar)

    #----------------------------------------------------------------------
    def onSwitchPanels(self, event):

       if self.panel_one.IsShown():    
          self.SetTitle("Panel Two Showing")
          self.panel_one.Hide
          self.panel_two.Show()
       else:
          self.SetTitle("Panel One Showing")
          self.panel_one.Show()
          self.panel_two.Hide()
          self.Layout()


# Run the program
if __name__ == "__main__":
    app = wx.App(False)
    frame = MyForm()
    frame.Show()
    app.MainLoop()

我想在单击 PanelOne 类中的按钮时调用 onSwitchPanels 函数。这个应用程序我想像 this code in Tkinter 一样工作.

我有堆栈人员，帮助我，非常感谢。

Answer 1

一年多前我写了一篇关于这个主题的教程，尽管我使用菜单来进行切换。您可以调整代码以使您的按钮执行此操作。这是教程:http://www.blog.pythonlibrary.org/2010/06/16/wxpython-how-to-switch-between-panels/

编辑:上面代码的问题有三方面。首先在onSwitchPanels方法中，你需要有“self.panel_one.Hide()”。请注意您的代码中缺少的括号。其次，您确实需要取消缩进“self.Layout()”，以便它与 if 语句处于同一级别，而不是在“else”部分内。最后，您不能从 PanelOne 调用“onSwitchPanels”，因为它没有在那里定义。你可以改变它，所以它是这样的:

button.Bind(wx.EVT_BUTTON, parent.onSwitchPanels)

丑陋且不真正推荐，但它有效。不过，您应该为此使用 PubSub。

编辑 #2:我猜我应该刚刚发布代码，因为 OP 甚至不会尝试我的建议。

import wx
import wx.grid as gridlib

########################################################################
class PanelOne(wx.Panel):
    """"""

    #----------------------------------------------------------------------
    def __init__(self, parent):
        """Constructor"""
        wx.Panel.__init__(self, parent=parent)
        txt = wx.TextCtrl(self)
        button =wx.Button(self, label="Save", pos=(200, 325))
        button.Bind(wx.EVT_BUTTON, parent.onSwitchPanels)

########################################################################
class PanelTwo(wx.Panel):
    """"""

    #----------------------------------------------------------------------
    def __init__(self, parent):
        """Constructor"""
        wx.Panel.__init__(self, parent=parent)

        grid = gridlib.Grid(self)
        grid.CreateGrid(25,12)

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(grid, 0, wx.EXPAND)
        self.SetSizer(sizer)

########################################################################
class MyForm(wx.Frame):

    #----------------------------------------------------------------------
    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY,
                          "Panel Switcher Tutorial",
                          size=(800,600))

        self.panel_one = PanelOne(self)
        self.panel_two = PanelTwo(self)
        self.panel_two.Hide()

        self.sizer = wx.BoxSizer(wx.VERTICAL)
        self.sizer.Add(self.panel_one, 1, wx.EXPAND)
        self.sizer.Add(self.panel_two, 1, wx.EXPAND)
        self.SetSizer(self.sizer)

        menubar = wx.MenuBar()
        fileMenu = wx.Menu()
        switch_panels_menu_item = fileMenu.Append(wx.ID_ANY,
                                                  "Switch Panels",
                                                  "Some text")
        self.Bind(wx.EVT_MENU, self.onSwitchPanels,
                  switch_panels_menu_item)
        menubar.Append(fileMenu, '&File')
        self.SetMenuBar(menubar)

    #----------------------------------------------------------------------
    def onSwitchPanels(self, event):

        if self.panel_one.IsShown():
           self.SetTitle("Panel Two Showing")
           self.panel_one.Hide()
           self.panel_two.Show()
        else:
           self.SetTitle("Panel One Showing")
           self.panel_one.Show()
           self.panel_two.Hide()
        self.Layout()

# Run the program
if __name__ == "__main__":
    app = wx.App(False)
    frame = MyForm()
    frame.Show()
    app.MainLoop()