Bagaimana untuk Menambah Bar Tatal pada Kumpulan Widget di Tkinter?

Menambahkan Bar Tatal pada Kumpulan Widget dalam Tkinter

Gambaran Keseluruhan

Fungsi bar skrol Tkinter terhad kepada widget tertentu, tidak termasuk Bingkai dan widget akar. Mengatasi had ini memerlukan pendekatan alternatif.

Pendekatan Bingkai-Terbenam-dalam-Kanvas

• Buat widget kanvas dan kaitkan bar skrol dengan ia.
• Benamkan a bingkai yang mengandungi widget label dalam kanvas.
• Tetapkan kawasan skrol kanvas agar sepadan dengan saiz bingkai.

Penyelesaian Berorientasikan Objek

import tkinter as tk

class Example(tk.Frame):
    def __init__(self, parent):

        # Initialize frame
        tk.Frame.__init__(self, parent)

        # Create canvas and scrollbar
        self.canvas = tk.Canvas(self, borderwidth=0, background="#ffffff")
        self.frame = tk.Frame(self.canvas, background="#ffffff")
        self.vsb = tk.Scrollbar(self, orient="vertical", command=self.canvas.yview)
        self.canvas.configure(yscrollcommand=self.vsb.set)

        # Pack widgets
        self.vsb.pack(side="right", fill="y")
        self.canvas.pack(side="left", fill="both", expand=True)
        self.canvas.create_window((4,4), window=self.frame, anchor="nw", tags="self.frame")

        # Bind frame's <Configure> event to update scroll region
        self.frame.bind("<Configure>", self.onFrameConfigure)

        # Populate with data
        self.populate()

    def populate(self):
        for row in range(100):
            tk.Label(self.frame, text="%s" % row, width=3, borderwidth="1",
                     relief="solid").grid(row=row, column=0)
            t = "this is the second column for row %s" %row
            tk.Label(self.frame, text=t).grid(row=row, column=1)

    def onFrameConfigure(self, event):
        self.canvas.configure(scrollregion=self.canvas.bbox("all"))

if __name__ == "__main__":
    root=tk.Tk()
    example = Example(root)
    example.pack(side="top", fill="both", expand=True)
    root.mainloop()

Prosedur Penyelesaian

import tkinter as tk

def populate(frame):
    for row in range(100):
        tk.Label(frame, text="%s" % row, width=3, borderwidth="1", 
                 relief="solid").grid(row=row, column=0)
        t = "this is the second column for row %s" %row
        tk.Label(frame, text=t).grid(row=row, column=1)

def onFrameConfigure(canvas):
    canvas.configure(scrollregion=canvas.bbox("all"))

root = tk.Tk()
canvas = tk.Canvas(root, borderwidth=0, background="#ffffff")
frame = tk.Frame(canvas, background="#ffffff")
vsb = tk.Scrollbar(root, orient="vertical", command=canvas.yview)
canvas.configure(yscrollcommand=vsb.set)

vsb.pack(side="right", fill="y")
canvas.pack(side="left", fill="both", expand=True)
canvas.create_window((4,4), window=frame, anchor="nw")

frame.bind("<Configure>", lambda event, canvas=canvas: onFrameConfigure(canvas))

populate(frame)

root.mainloop()

Atas ialah kandungan terperinci Bagaimana untuk Menambah Bar Tatal pada Kumpulan Widget di Tkinter?. Untuk maklumat lanjut, sila ikut artikel berkaitan lain di laman web China PHP!