使用 python tkinter 将键单击绑定到树中的选定项目

Question

我正在处理 "treeview" 患者列表，我们可以在其中搜索患者和 select 患者。我想右键单击 selected 患者并打开一个包含患者信息的新页面：

try:
    import tkinter
    from tkinter import ttk
except ImportError:
    import Tkinter as tkinter
    import ttk


class Mainpage:

    def __init__(self, master):
        self.master = master
        self.frame = tkinter.Frame(self.master)
        self.master.columnconfigure(0, weight=1)
        self.master.columnconfigure(1, weight=3)
        self.master.columnconfigure(2, weight=1)
        self.master.columnconfigure(3, weight=1)
        self.master.columnconfigure(4, weight=1)

        self.searchfield = tkinter.Frame(self.master)
        self.searchfield.grid(row=1, column=0, columnspan=4)

        self.search_var = tkinter.StringVar()
        self.search_var.trace("w", lambda name, index, mode: self.selected)
        self.entry = tkinter.Entry(self.searchfield, textvariable=self.search_var, width=45)
        self.entry.grid(row=0, column=0, padx=10, pady=3)
        self.searchbtn = tkinter.Button(self.searchfield, text='Search', command=self.selected)
        self.searchbtn.grid(row=0, column=1)
        self.treeFrame = tkinter.Listbox(self.searchfield, width=45, height=150)
        self.treeFrame.grid(row=1, column=0, padx=10, pady=3)

        self.tree = ttk.Treeview( self.treeFrame, columns=('Status', 'Name', 'Date'))
        self.tree.heading('#0', text='Status')
        self.tree.heading('#1', text='Name')
        self.tree.heading('#2', text='Date')
        self.tree.heading('#3', text='Transact Code')
        self.tree.column('#0', stretch=tkinter.YES)
        self.tree.column('#1', stretch=tkinter.YES)
        self.tree.column('#2', stretch=tkinter.YES)
        self.tree.column('#3', stretch=tkinter.YES)
        self.tree.grid(row=0, columnspan=4, sticky='nsew')
        self.treeview = self.tree

        self.i = 1
        self.patient_list = [{"Name":"Harry Thuku", "Date":"07.09.2017"},
                             {"Name":"stella stl", "Date": "07.09.2017"},
                             {"Name":"geg be", "Date": "07.09.2017"},
                             {"Name":"Henry Reeta", "Date": "06.09.2017"},
                             {"Name":"Henry Reeta", "Date": "06.09.2017"}]

        for p in self.patient_list:
            self.tree.insert('', 'end', text="ID_"+str(self.i), values=
            (p["Name"], p["Date"]), tags=p["Name"])
            self.i = self.i + 1

        self.search_item = self.entry.get()
        for p in self.patient_list:
            if p["Name"] == self.search_item:
                self.selected(self.search_item)

        self.frame.bind("<Button-3>", self.click)
        self.frame.grid_location(0, 0)


    def selected(self):
        search_for = self.search_var.get()
        iid_to_select = ()

        if search_for != '':
            all_tags = self.master.tk.call(str(self.tree), "tag", "names")
            tags_to_select = tuple(filter(lambda tag: search_for.lower() in tag.lower(), all_tags))
            for sorted_tag in tags_to_select:
                iid_to_select += self.tree.tag_has(sorted_tag)

        self.tree.selection_set(iid_to_select)

    def click(self, event):
        print("Clicked at: ", event.x, event.y)
        self.master.withdraw()
        self.toplevel = tkinter.Toplevel(self.master)
        self.toplevel.geometry("480x480")
        app = PatientPage(self.toplevel)


class PatientPage:
    #.....
    pass



root = tkinter.Tk()
root.title("Login")
root.geometry("480x480")
Mainpage(root)
root.mainloop()

我无法将鼠标右键单击与新 window 的打开绑定，我做了一些编码，但不是 100% 理解它，因此它不起作用...

任何关于这个主题的想法都会有所帮助和感激！

Answer 1

首先，在树上绑定右键，而不是在框架上，即将self.frame.bind("<Button-3>", self.click)替换为self.tree.bind("<Button-3>", self.click)。

然后，您需要知道用户单击了树视图中的哪个项目。为此，您可以使用 self.tree.identify_row(event.y)，其中 returns 位置 event.y 的项目 ID。

并且，如果需要，您可以使用 self.tree.item(<item>, 'values') 检索存储在树视图中的患者信息。

所以click变成：

def click(self, event):
    item = self.tree.identify_row(event.y)
    if item:  # right click on a patient
        self.master.withdraw()
        self.toplevel = tkinter.Toplevel(self.master)
        self.toplevel.geometry("480x480")
        info = self.tree.item(item, 'values')
        print(info)
        app = PatientPage(self.toplevel)

使用 python tkinter 将键单击绑定到树中的选定项目

bind key click to selected item from a tree with python tkinter

python

tkinter

key-bindings