[英]How bind mousewheel to tk inter _listbox?
我有一個與multilistbox的接口,但是當我使用鼠標滾輪(向上或向下)時,列會獨立移動。
如何同時移動所有列?
(希望您能為我提供幫助,我是初學者,而且我已經為此工作了數周)
這是我的代碼:
from tkinter import *
class MultiListbox(Frame):
def __init__(self, master, lists):
Frame.__init__(self, master)
self.lists = []
for l,w in lists:
frame = Frame(self); frame.pack(side=LEFT, expand=YES, fill=BOTH)
Label(frame, text=l, borderwidth=1, relief=RAISED).pack(fill=X)
lb = Listbox(frame, width=w, borderwidth=0, selectborderwidth=0,
relief=FLAT, exportselection=FALSE)
lb.pack(expand=YES, fill=BOTH)
self.lists.append(lb)
lb.bind('<B1-Motion>', lambda e, s=self: s._select(e.y))
lb.bind("<MouseWheel>")
lb.bind('<Button-1>', lambda e, s=self: s._select(e.y))
lb.bind('<Leave>', lambda e: 'break')
lb.bind('<B2-Motion>', lambda e, s=self: s._b2motion(e.x, e.y))
lb.bind('<Button-2>', lambda e, s=self: s._button2(e.x, e.y))
frame = Frame(self); frame.pack(side=LEFT, fill=Y)
Label(frame, borderwidth=1, relief=RAISED).pack(fill=X)
sb = Scrollbar(frame, orient=VERTICAL, command=self._scroll)
sb.pack(expand=YES, fill=Y)
def _select(self, y):
row = self.lists[0].nearest(y)
self.selection_clear(0, END)
self.selection_set(row)
return 'break'
def _button2(self, x, y):
for l in self.lists: l.scan_mark(x, y)
return 'break'
def _b2motion(self, x, y):
for l in self.lists: l.scan_dragto(x, y)
return 'break'''
def _scroll(self, *args):
for l in self.lists:
l.yview(*args)
def curselection(self):
return self.lists[0].curselection()
def delete(self, first, last=None):
for l in self.lists:
l.delete(first, last)
def get(self, first, last=None):
result = []
for l in self.lists:
result.append(l.get(first,last))
if last: return map(None, *result)
return result
def index(self, index):
self.lists[0].index(index)
def insert(self, index, *elements):
for e in elements:
i = 0
for l in self.lists:
l.insert(index, e[i])
i = i + 1
def size(self):
return self.lists[0].size()
def see(self, index):
for l in self.lists:
l.see(index)
def selection_anchor(self, index):
for l in self.lists:
l.selection_anchor(index)
def selection_clear(self, first, last=None):
for l in self.lists:
l.selection_clear(first, last)
def selection_includes(self, index):
return self.lists[0].selection_includes(index)
def selection_set(self, first, last=None):
for l in self.lists:
l.selection_set(first, last)
if __name__ == '__main__':
tk = Tk()
Label(tk, text='MultiListbox').pack()
mlb = MultiListbox(tk, (('Clave', 20), ('Descripcion', 20), ('Existencia', 20)))
lineas = len(open("productos-doc1.txt").readlines())
totalLineas=(int(lineas))
try:
x = 0
while 0 != totalLineas:
abrir = open("productos-doc1.txt","r+")#ABRE EL ARCHIVO
leer = abrir.readlines()
renglon = leer[x]
splitRenglon = renglon.split("'")
clave = splitRenglon[0]
descripcion = splitRenglon[1]
existencia = splitRenglon[3]
mlb.insert(END, (clave, descripcion, existencia))
mlb.pack(expand=YES,fill=BOTH)
x = x+1
except IndexError:
mlb.insert(END,"FINISH" )
tk.mainloop()
僅僅通過查看代碼,就像我無法在沒有文本文件的情況下運行它一樣,似乎您沒有將任何功能分配給列表的xscrollcommand
選項,后者指定了在滾動列表時要做什么。 我認為沒有它,您的滾動條將無法按預期工作。 您可以如下添加選項:
sb = Scrollbar(frame, orient=VERTICAL, command=self._scroll)
[l.config(yscrollcommand=sb.set) for l in self.lists]
但是,不確定這是造成您問題的原因。
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