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wxPython中使用剪贴板存取文本数据

皮皮书屋下载了一本《wxPython 2.8 Application Development Cookbook》,特别喜欢这种 Cookbook 的书, 例子简单实用,本文中剪贴板处理部分便是参考 Cookbook 而作的练习。(皮皮书屋的注册验证码很给力)

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。

pic1

"""
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()