Question

我不仅尝试打印单选按钮的值，而且还打印名称。这样我就可以做到“您选择了值为'23'的'Radio 2'”

from tkinter import *

class Gui:
def __init__(self, master):
    self.master = master
    self.var = StringVar()
    self.var.set("Cat")
    radio1 = Radiobutton(self.master, variable=self.var, text="radio1", value="Cat")
    radio1.bind('<Double-1>', lambda :self.show_radioname("radio1"))
    radio1.pack()
    radio2 = Radiobutton(self.master, variable=self.var, text="radio2", value="Dog")
    radio2.bind('<Double-1>', lambda :self.show_radioname("radio2"))
    radio2.pack()
    radio3 = Radiobutton(self.master, variable=self.var, text="radio3", value="Horse")
    radio3.bind('<Double-1>', lambda :self.show_radioname("radio3"))
    radio3.pack()

    submit_button = Button(self.master, text="print",  command=self.show_var)
    submit_button.pack()

def show_var(self):
    print(self.var.get())

@staticmethod
def show_radioname(radio_name):
    print(radio_name)

我可以获得电台的价值，但无法获取其文本名称

Answer 1

使用bind创建绑定时，Tkinter会自动添加包含有关事件信息的参数。您必须小心考虑这个额外的参数。（请参阅this answer）

因此，如果您使用的是lambda，则可以向其添加一个参数，如下所示：

lambda event: self.show_radioname("radio1"))

from tkinter import *

class Gui:
    def __init__(self, master):
        self.master = master
        self.var = StringVar()
        self.var.set("Cat")
        radio1 = Radiobutton(self.master, variable=self.var, text="radio1", value="Cat")
        radio1.bind('<Double-1>', lambda event: self.show_radioname("radio1"))
        radio1.pack()
        radio2 = Radiobutton(self.master, variable=self.var, text="radio2", value="Dog")
        radio2.bind('<Double-1>', lambda event: self.show_radioname("radio2"))
        radio2.pack()
        radio3 = Radiobutton(self.master, variable=self.var, text="radio3", value="Horse")
        radio3.bind('<Double-1>', lambda event: self.show_radioname("radio3"))
        radio3.pack()

        submit_button = Button(self.master, text="print",  command=self.show_var)
        submit_button.pack()
        self.master.mainloop()

    def show_var(self):
        print(self.var.get())

    @staticmethod
    def show_radioname(radio_name):
        print(radio_name)

Gui(Tk())

Python获取选定的单选按钮的文本/标签名称，而不仅仅是值

1 个答案: