在 Python 中为 Tkinter 树视图创建弹出菜单答案

【问题标题】：Creating a pop up menu for a Tkinter Treeview in Python在 Python 中为 Tkinter 树视图创建弹出菜单
【发布时间】：2016-03-16 05:51:30
【问题描述】：

当单击树视图中的项目时，是否可以在包含弹出菜单的子窗口中放置一个 tkinter 树视图。目前菜单显示在右键单击并被定向到适当的功能，但是我无法识别在树视图中选择的项目。

有没有办法在使用菜单后识别树视图中已选择的行？

提前致谢

class Page(tk.Frame):
    def __init__(self, parent, controller):
    tk.Frame.__init__(self, parent)
    button = ttk.Button(self, text="Treeview", command= self.ChildWindow)
    button.pack()


def ChildWindow(self):

    #Create menu
    popup = Menu(self, tearoff=0)
    popup.add_command(label="Next", command=self.selection)
    popup.add_separator()

    def do_popup(event):
        # display the popup menu
        try:
            popup.tk_popup(event.x_root, event.y_root, 0)
        finally:
            # make sure to release the grab (Tk 8.0a1 only)
            popup.grab_release()

    #Create Treeview
    win2 = Toplevel()
    new_element_header=['1st']
    treeScroll = ttk.Scrollbar(win2)
    treeScroll.pack(side=RIGHT, fill=Y)
    self.tree = ttk.Treeview(win2,columns=new_element_header, show="headings")
    self.tree.heading("1st", text="1st")
    self.tree.insert("" , 0,    text="Line 1", values=("1A"))
    self.tree.pack(side=LEFT, fill=BOTH)

    self.tree.bind("<Button-3>", do_popup)

    win2.minsize(600,30)

def selection(self, event):
    selection = self.tree.set(self.tree.identify_row(event.y))
    print selection

【问题讨论】：

我以前试过这个。我记不太清了，但我确定我设计了一个菜单并使用了menu.post() 功能。树视图中还有一个函数，例如tree.identify(x, y)，可用于查找用户单击的位置是否为单元格、标题等。

标签： python tkinter treeview

【解决方案1】：

我已尝试将您的原始代码更新为以下代码，现在它可以工作了。另请参阅此问题：how to pass values to popup command on right click in python tkinter

import Tkinter as tk
import ttk

class Page(tk.Frame):
    def __init__(self, parent, controller):
        self.root = parent;
        self.button = tk.Button(parent, text="Treeview", command=self.ChildWindow)
        self.button.pack()


    def ChildWindow(self):

        #Create menu
        self.popup = tk.Menu(self.root, tearoff=0)
        self.popup.add_command(label="Next", command=self.selection)
        self.popup.add_separator()

        def do_popup(event):
            # display the popup menu
            try:
                self.popup.selection = self.tree.set(self.tree.identify_row(event.y))
                self.popup.post(event.x_root, event.y_root)
            finally:
                # make sure to release the grab (Tk 8.0a1 only)
                self.popup.grab_release()

        #Create Treeview
        win2 = tk.Toplevel(self.root)
        new_element_header=['1st']
        treeScroll = ttk.Scrollbar(win2)
        treeScroll.pack(side=tk.RIGHT, fill=tk.Y)
        self.tree = ttk.Treeview(win2, columns=new_element_header, show="headings")
        self.tree.heading("1st", text="1st")
        self.tree.insert("" ,  0, text="Line 1", values=("1A"))
        self.tree.pack(side=tk.LEFT, fill=tk.BOTH)

        self.tree.bind("<Button-3>", do_popup)

        win2.minsize(600,30)

    def selection(self):
        print self.popup.selection

root = tk.Tk()

Page(root, None)

root.mainloop()

def main():
    pass
if __name__ == '__main__':
    main()

【讨论】：