74 lines
2.7 KiB
Markdown
74 lines
2.7 KiB
Markdown
# wxPython:如何以编程方式更改 wx。笔记本页面
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> 原文：<https://www.blog.pythonlibrary.org/2012/07/18/wxpython-how-to-programmatically-change-wx-notebook-pages/>
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偶尔我会在 wxPython [用户组](https://groups.google.com/forum/?fromgroups#!topic/wxpython-users/uVPl73Gv9eQ)上看到有人询问如何制作 wx。笔记本以编程方式更改页面(或选项卡)。所以我决定是时候弄清楚了。下面是一些适合我的代码:
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```py
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import random
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import wx
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########################################################################
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class TabPanel(wx.Panel):
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#----------------------------------------------------------------------
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def __init__(self, parent, page):
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""""""
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wx.Panel.__init__(self, parent=parent)
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self.page = page
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colors = ["red", "blue", "gray", "yellow", "green"]
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self.SetBackgroundColour(random.choice(colors))
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btn = wx.Button(self, label="Change Selection")
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btn.Bind(wx.EVT_BUTTON, self.onChangeSelection)
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sizer = wx.BoxSizer(wx.VERTICAL)
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sizer.Add(btn, 0, wx.ALL, 10)
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self.SetSizer(sizer)
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#----------------------------------------------------------------------
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def onChangeSelection(self, event):
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"""
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Change the page!
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"""
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notebook = self.GetParent()
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notebook.SetSelection(self.page)
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########################################################################
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class DemoFrame(wx.Frame):
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"""
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Frame that holds all other widgets
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"""
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#----------------------------------------------------------------------
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def __init__(self):
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"""Constructor"""
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wx.Frame.__init__(self, None, wx.ID_ANY,
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"Notebook Tutorial",
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size=(600,400)
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)
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panel = wx.Panel(self)
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notebook = wx.Notebook(panel)
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tabOne = TabPanel(notebook, 1)
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notebook.AddPage(tabOne, "Tab 1")
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tabTwo = TabPanel(notebook, 0)
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notebook.AddPage(tabTwo, "Tab 2")
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sizer = wx.BoxSizer(wx.VERTICAL)
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sizer.Add(notebook, 1, wx.ALL|wx.EXPAND, 5)
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panel.SetSizer(sizer)
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self.Layout()
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self.Show()
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#----------------------------------------------------------------------
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if __name__ == "__main__":
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app = wx.App(False)
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frame = DemoFrame()
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app.MainLoop()
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```
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需要知道的主要事情是，您需要使用 SetSelection(或 ChangeSelection)来强制 Notebook 小部件改变页面。就是这样！这段代码在 Windows 7 上用 Python 2.7.3 和 Python 2.7.3(经典)进行了测试。另请参见关于[启用](http://wxpython-users.1045709.n5.nabble.com/wxNotebook-Programatically-change-page-td2302391.html)的讨论。 |