从Python 3.5中的不同Tkinter Listbox小部件同时选择值

时间:2016-02-02 22:19:02

标签: python tkinter listbox

我希望我的程序以下列方式工作:

  • 当我从3个列表框中的任何一个中单击一个元素来选择相邻的值时(例如:如果我在第一个列表框中选择0,它应该在第二个列表框中选择值" hello"和& #34;世界"在第三个列表框中

感谢This question/answer我设法让他们同时移动

代码如下:

from tkinter import *

class fase3(Frame):

    def __init__(self, master):


        Frame.__init__(self,master)
        self.master=master
        self.frame=Frame(self.master)

        self.txtm=Label(self, text="example")
        self.txtm.grid(row=1, columnspan=5)

        self.txt1=Label(self, text="1")
        self.txt1.grid(row=2, column=1)

        self.txt2=Label(self, text="2")
        self.txt2.grid(row=2,column=2)

        self.txt3=Label(self, text="3")
        self.txt3.grid(row=2,column=3)
        self.scrlb=Scrollbar(self,orient="vertical")

        self.lista1=Listbox(self,yscrollcommand=self.yscroll1,exportselection=0)
        self.lista1.grid(row=3,column=1)

        self.lista2=Listbox(self, yscrollcommand=self.yscroll2,exportselection=0)
        self.lista2.grid(row=3, column=2)

        self.lista3=Listbox(self, yscrollcommand=self.yscroll3,exportselection=0)
        self.lista3.grid(row=3, column=3)

        #self.scrlb.config(command=self.yview)
        #self.scrlb.grid(row=3, column=4,rowspan=1)
#i chose not to place the scrollbar because it involved frames and it makes the code longer


        for i in range(3):
            self.lista1.insert("end",i)

        self.lista2.insert("end","hello")
        self.lista2.insert("end","pls")
        self.lista2.insert("end","thanks")
        self.lista3.insert("end","world")
        self.lista3.insert("end","help")
        self.lista3.insert("end","alot")

    def yscroll1(self, *args):
        if  self.lista2.yview()!=self.lista1.yview()!=self.lista3.yview():
            self.lista2.yview_moveto(args[0])
            self.lista3.yview_moveto(args[0])
        self.scrlb.set(*args)

    def yscroll2(self, *args):
        if  self.lista1.yview()!=self.lista2.yview()!=self.lista1.yview():
            self.lista1.yview_moveto(args[0])
            self.lista3.yview_moveto(args[0])
        self.scrlb.set(*args)

    def yscroll3(self, *args):
        if self.lista2.yview()!=self.lista3.yview()!=self.lista1.yview():
            self.lista1.yview_moveto(args[0])
            self.lista2.yview_moveto(args[0])
        self.scrlb.set(*args)

    def yview(self, *args):
        self.lista1.yview(*args)
        self.lista2.yview(*args)
        self.lista3.yview(*args)



    self.pack()

root = Tk()

marco= Frame(root, padx=100, pady=50)

marco.pack()

lf = fase3(marco)

root.mainloop()

部分问题是,我已经有一个绑定到每个Listbox的函数,当我添加exportselection=0时,它选择一个值,因此,例如用户可以选择(" 0&#34 ;,"你好","很多"),这对我来说根本就没有意义(插入数据库)

我还没有完成任何过程,但如果它们可以同时移动,那么它们应该可以选择相邻的值。

你应该能够复制粘贴它并在Python上运行它没有问题,我在python 3中做到了。

1 个答案:

答案 0 :(得分:1)

您要做的第一件事是绑定到<<ListboxSelect>>事件,以检测何时在其中一个列表框中选择了一个选项:

def __init__(self, master):

    # ...

    self.lista1=Listbox(self,yscrollcommand=self.yscroll1,exportselection=0)
    self.lista1.bind('<<ListboxSelect>>', self.on_select1)
    self.lista1.grid(row=3,column=1)

    self.lista2=Listbox(self, yscrollcommand=self.yscroll2,exportselection=0)
    self.lista2.bind('<<ListboxSelect>>', self.on_select2)
    self.lista2.grid(row=3, column=2)

    self.lista3=Listbox(self, yscrollcommand=self.yscroll3,exportselection=0)
    self.lista3.bind('<<ListboxSelect>>', self.on_select3)
    self.lista3.grid(row=3, column=3)

     # ...

选择某个选项后,您需要在其他列表框中选择相应的选项:

def on_select1(self, event):
    # Get index of selected option.
    index = self.lista1.curselection()[0]
    # Select corresponding options in other list-boxes.
    self.select_others(index, self.lista2, self.lista3)

def on_select2(self, event):
    # Get index of selected option.
    index = self.lista2.curselection()[0]
    # Select corresponding options in other list-boxes.
    self.select_others(index, self.lista1, self.lista3)

def on_select3(self, event):
    # Get index of selected option.
    index = self.lista3.curselection()[0]
    # Select corresponding options in other list-boxes.
    self.select_others(index, self.lista1, self.lista2)

def select_others(self, index, *others):
    for listbox in others:
        # The list-box's selection must be cleared to prevent the previous selection from remaining.
        listbox.selection_clear(0, listbox.size() - 1)
        listbox.selection_set(index)

最后,self.pack()课程末尾的face3放错地方了。

class face3(Frame):

    # ...

    self.pack()

您应该打包lf

root = Tk()

marco = Frame(root, padx=100, pady=50)
marco.pack()

lf = fase3(marco)
lf.pack()

root.mainloop()