使用wxPython获取系统剪贴板中的数据的教程

涉及到开发桌面程序，尤其是文本处理，剪贴板就很常用，不像 java 中那么烦锁，wxpython 中访问剪贴板非常简单，寥寥几句足以。

# 取得剪贴板并确保其为打开状态
text_obj = wx.TextDataObject()
wx.TheClipboard.Open()
if wx.TheClipboard.IsOpened() or wx.TheClipboard.Open():
  # do something...
  wx.TheClipboard.Close()

取值：

if wx.TheClipboard.GetData(text_obj):
  text = text_obj.GetText()

写值：

text_obj.SetText(‘要写入的值')
wx.TheClipboard.SetData(text_obj)

下面的例子中，点击 Copy 会将文本框中的值复制到剪贴板，点击 Paste 会将剪贴板中的文本粘贴到文本框中。

"""
Get text from and put text on the clipboard.
"""

import wx

class MyFrame(wx.Frame):
  def __init__(self):
    wx.Frame.__init__(self, None, title='Accessing the clipboard', size=(400, 300))

    # Components
    self.panel = wx.Panel(self)
    self.text = wx.TextCtrl(self.panel, pos=(10, 10), size=(370, 220))
    self.copy = wx.Button(self.panel, wx.ID_ANY, label='Copy', pos=(10, 240))
    self.paste = wx.Button(self.panel, wx.ID_ANY, label='Paste', pos=(100, 240))

    # Event bindings.
    self.Bind(wx.EVT_BUTTON, self.OnCopy, self.copy)
    self.Bind(wx.EVT_BUTTON, self.OnPaste, self.paste)

  def OnCopy(self, event):
    text_obj = wx.TextDataObject()
    text_obj.SetText(self.text.GetValue())
    if wx.TheClipboard.IsOpened() or wx.TheClipboard.Open():
      wx.TheClipboard.SetData(text_obj)
      wx.TheClipboard.Close()

  def OnPaste(self, event):
    text_obj = wx.TextDataObject()
    if wx.TheClipboard.IsOpened() or wx.TheClipboard.Open():
      if wx.TheClipboard.GetData(text_obj):
        self.text.SetValue(text_obj.GetText())
      wx.TheClipboard.Close()

app = wx.App(False)
frame = MyFrame()
frame.Show(True)
app.MainLoop()