Question

这一定是我想要的简单，但我似乎无法弄清楚如何使用selection_set方法在Treeview中设置选择行。我对ttk文档感到困惑，该文档有时会引用＆＃34; 项目＆＃34;和其他时间到＆＃34; iid ＆＃34;用于方法参数。当我在Treeview中插入一行时，我是不是创建了一个我给出句柄 iid 的项目？

import Tkinter as Tk
import ttk

root = Tk.Tk()
tree = ttk.Treeview(root, displaycolumns='#all')
tree["columns"]=("1", "2", "3", "4")
tree.column("#0", width=70)
tree.column("1", width=70, anchor=Tk.CENTER)
tree.column("2", width=50, anchor=Tk.CENTER)
tree.column("3", width=50, anchor=Tk.CENTER)
tree.column("4", width=70, anchor=Tk.CENTER)
tree.heading("1", text="Column 1")
tree.heading("2", text="Column 2")
tree.heading("3", text="Column 3")
tree.heading("4", text="Column 4")
id2 = []
count = 0
item_list = ['A', 'B', 'C', 'D']
for item in item_list:
    id = tree.insert("", count, iid='Row %s'%count, text=item, values=('1', '2', '3', '4'))
    id2.append(id)
    count += 1

tree.selection_set('Row 0')         #Doesn't work -- returns "_tkinter.TclError:  Item Row not found"
tree.pack(fill=Tk.BOTH, expand=1, side=Tk.RIGHT,padx=50)

Tk.mainloop()

回溯：

Traceback (most recent call last):
  File "python-ttk-treeview-how-to-select-a-row.py", line 28, in <module>
    tree.selection_set('Row 0')         #Doesn't work -- returns "_tkinter.TclError:  Item Row not found"
  File "C:\Python\lib\lib-tk\ttk.py", line 1402, in selection_set
    self.selection("set", items)
  File "C:\Python\lib\lib-tk\ttk.py", line 1397, in selection
    return self.tk.call(self._w, "selection", selop, items)
_tkinter.TclError: Item Row not found

Answer 1

这是因为您在选择名称中嵌入了空格。根据{{3}}的答案，你只能通过使用这样的东西来做到这一点：

tree.selection_set('"Row 0"')  # Does work

线索是错误消息，其中Item Row not found而非Item Row 0 not found。

ttk Treeview：如何选择一行？

1 个答案: