我有两个列表框。选择一个列表框时，它会触发结尾以使用函数的输出进行更新。当我使用该<<ListboxSelect>>事件单独单击每个选项时，此方法工作正常，但是现在不知道该如何使其与全选按钮一起使用。“全选”按钮在突出显示项目方面起作用，但是我无法通过它来更新第二个列表。
评论来自上一个问题。
from Tkinter import *
# dummy list so that the code does not relay on actually drives and files
rdrive = ['drive1','drive2','drive3']
sel_files = {'drive1': ['file1','file2'],
'drive2': ['file3','file4'],
'drive3': ['file6','file5']}
class Example(Frame):
def __init__(self, parent):
Frame.__init__(self, parent)
self.parent = parent
self.initUI()
def initUI(self):
self.parent.title("Listbox")
self.pack(fill=BOTH, expand=1)
# Drive Select List Box
# global rdrive
# rdrive = drive_ctypes.find_rmdrv()
# use dummy rdrive instead of physical drives. Otherwise,
# cant reproduce the problem.
self.lb = Listbox(self, height=10, selectmode=MULTIPLE)
for i in rdrive:
self.lb.insert(END, i)
self.lb.bind("<<ListboxSelect>>", self.onSelect)
self.lb.grid(row =3, column =2)
self.drives_select_b = Button(self, text = "Select All", command = self.select_all_drives)
#self.drives_select_b.bind("<Button-1>", PLACE HOLDER)
self.drives_select_b.grid(row =4, column =3)
## File Select List Box
self.flb = Listbox(self, height=10, selectmode=MULTIPLE)
self.flb.grid(row =3, column =4)
def onSelect(self, event):
# most changes are here. GUI programming is event driven, so you need
# to get the list of files for selected drive (i.e. when selection even occurs).
# Also here you respond the the even, so that the right list is populated.
# get widget (i.e. right listbox) and currently selected item(s)
widget = event.widget
selection=widget.curselection()
files_avalibe = []
# if something was selected, than get drives for which it was selected
# and retrieve files for each drive
if selection:
for drive_i in selection:
selected_drive = rdrive[drive_i]
files_avalibe += sel_files[selected_drive]
print(files_avalibe)
# once we have files from the selected drive, list them
# in the right list box
self.update_file_list(files_avalibe)
def update_file_list(self, file_list):
# updates right listbox
self.flb.delete(0, END)
for i in file_list:
self.flb.insert(END, i)
def select_all_drives(self):
self.lb.select_set(0, END)
root = Tk()
f = Example(root)
root.mainloop()
您的select_all_drives函数可以触发事件：
def select_all_drives(self):
self.lb.select_set(0, END)
self.lb.event_generate("<<ListboxSelect>>")
本文收集自互联网，转载请注明来源。
如有侵权，请联系[email protected] 删除。
我来说两句