按下鼠标右键时Python TKinter文本小部件中的stard和上下文菜单

Question

我正在使用WindowsXP，Python2.6.x和TKinter。在应用程序中使用文本小部件，但缺少标准弹出菜单（剪切、复制、粘贴、删除、全选）。如何让它出现？

Answer 1

我想我会分享我的解决方案，基于stackoverflow上的几个代码片段。它包括测试的最低应用程序：

编辑：类绑定可能无法工作。如果是这种情况，请使用普通绑定并在select_all函数中返回“break”。

import Tkinter as tk

if 1:  # nice widgets
    import ttk
else:
    ttk = tk

class EntryPlus(ttk.Entry):
    def __init__(self, *args, **kwargs):
        ttk.Entry.__init__(self, *args, **kwargs)
        _rc_menu_install(self)
        # overwrite default class binding so we don't need to return "break"
        self.bind_class("Entry", "<Control-a>", self.event_select_all)  
        self.bind("<Button-3><ButtonRelease-3>", self.show_menu)

    def event_select_all(self, *args):
        self.focus_force()
        self.selection_range(0, tk.END)

    def show_menu(self, e):
        self.tk.call("tk_popup", self.menu, e.x_root, e.y_root)

class TextPlus(tk.Text):
    def __init__(self, *args, **kwargs):
        tk.Text.__init__(self, *args, **kwargs)
        _rc_menu_install(self)
        # overwrite default class binding so we don't need to return "break"
        self.bind_class("Text", "<Control-a>", self.event_select_all)  
        self.bind("<Button-3><ButtonRelease-3>", self.show_menu)

    def event_select_all(self, *args):
        self.focus_force()        
        self.tag_add("sel","1.0","end")

    def show_menu(self, e):
        self.tk.call("tk_popup", self.menu, e.x_root, e.y_root)


def _rc_menu_install(w):
    w.menu = tk.Menu(w, tearoff=0)
    w.menu.add_command(label="Cut")
    w.menu.add_command(label="Copy")
    w.menu.add_command(label="Paste")
    w.menu.add_separator()
    w.menu.add_command(label="Select all")        

    w.menu.entryconfigure("Cut", command=lambda: w.focus_force() or w.event_generate("<<Cut>>"))
    w.menu.entryconfigure("Copy", command=lambda: w.focus_force() or w.event_generate("<<Copy>>"))
    w.menu.entryconfigure("Paste", command=lambda: w.focus_force() or w.event_generate("<<Paste>>"))
    w.menu.entryconfigure("Select all", command=w.event_select_all)        


if __name__ == "__main__":

    class SampleApp(tk.Tk):
        def __init__(self, *args, **kwargs):
            tk.Tk.__init__(self, *args, **kwargs)

            self.entry = EntryPlus(self)
            self.text = TextPlus(self)

            self.entry.pack()
            self.text.pack()

            self.entry.insert(0, "copy paste")
            self.text.insert(tk.INSERT, "copy paste")

    app = SampleApp()
    app.mainloop()