是否可以将ttk Treeview导出为pdf？

from tkinter import *
from tkinter import ttk
from reportlab.pdfgen import canvas

def export_to_pdf(treeview):
    # 创建pdf文档
    pdf = canvas.Canvas("treeview.pdf")

    # 获取Treeview的列标题
    columns = treeview["columns"]
    column_widths = [treeview.column(column, "width") for column in columns]

    # 添加列标题到pdf
    for i, column in enumerate(columns):
        pdf.drawString(sum(column_widths[:i]) + 10, 10, column)

    # 添加Treeview的数据到pdf
    for item in treeview.get_children():
        export_item_to_pdf(pdf, treeview, item, column_widths)

    # 保存pdf文档
    pdf.save()

def export_item_to_pdf(pdf, treeview, item, column_widths):
    # 获取项的文本数据
    item_text = [treeview.item(item, "text")]
    item_text.extend([treeview.item(item, "values")[column] for column in treeview["columns"][1:]])

    # 添加项的文本数据到pdf
    for i, text in enumerate(item_text):
        pdf.drawString(sum(column_widths[:i]) + 10, 20, text)

    # 递归添加子项的文本数据到pdf
    for child_item in treeview.get_children(item):
        export_item_to_pdf(pdf, treeview, child_item, column_widths)

# 创建一个示例的ttk Treeview
root = Tk()
treeview = ttk.Treeview(root)
treeview["columns"] = ("column1", "column2")
treeview.column("column1", width=100)
treeview.column("column2", width=100)
treeview.heading("column1", text="Column 1")
treeview.heading("column2", text="Column 2")
treeview.insert("", "end", text="Item 1", values=("Value 1", "Value 2"))
treeview.insert("", "end", text="Item 2", values=("Value 3", "Value 4"))
treeview.insert("Item 1", "end", text="Child Item", values=("Value 5", "Value 6"))
treeview.pack()

# 添加导出按钮
export_button = Button(root, text="Export to PDF", command=lambda: export_to_pdf(treeview))
export_button.pack()

root.mainloop()