我运行了一个基于滚动条here的示例。但是我想在框架上添加一个按钮(上一个),当滚动条向下移动时,此按钮仍然保留在那里,而其他内容随滚动条一起移动。
这是我的代码:
import Tkinter as tk
class Example(tk.Frame):
def __init__(self, root):
tk.Frame.__init__(self, root)
self.canvas = tk.Canvas(root, borderwidth=0, background="#ffffff")
self.frame = tk.Frame(self.canvas, background="#ffffff")
self.vsb = tk.Scrollbar(root, orient="vertical", command=self.canvas.yview)
self.canvas.configure(yscrollcommand=self.vsb.set)
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")
self.frame.bind("<Configure>", self.onFrameConfigure)
self.populate()
def populate(self):
button = tk.Button(self.frame, text='Prev')
button.grid(row=0, columns=1)
for row in range(1,100):
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):
'''Reset the scroll region to encompass the inner frame'''
self.canvas.configure(scrollregion=self.canvas.bbox("all"))
if __name__ == "__main__":
root=tk.Tk()
Example(root).pack(side="top", fill="both", expand=True)
root.mainloop()
任何人都可以帮我解决这个问题吗?非常感谢!
答案 0 :(得分:1)
您也可以使用pack()
执行此操作,但我更喜欢使用grid()
您需要做的是将按钮放在第0行的root中,并将类框放在root的第1行。这应该可以解决你的问题。
使用grid()
时,我们需要管理行和列的权重,以便在调整窗口大小时获得增长和缩小的行为。我们可以使用rowconfigute()
和columnconfigute()
执行此操作。对于这个程序,我们需要配置root的权重。
要让按钮保持在左侧,我们可以使用sticky = "w"
内的grid()
来选择要坚持的一面。
看看下面的代码:
import tkinter as tk
class Example(tk.Frame):
def __init__(self, root):
tk.Frame.__init__(self, root)
self.canvas = tk.Canvas(root, borderwidth=0, background="#ffffff")
self.frame = tk.Frame(self.canvas, background="#ffffff")
self.vsb = tk.Scrollbar(root, orient="vertical", command=self.canvas.yview)
self.canvas.configure(yscrollcommand=self.vsb.set)
self.vsb.grid(row = 1, column = 1, sticky = "nsew")
self.canvas.grid(row = 1, column = 0, sticky = "nsew")
self.canvas.create_window((4,4), window=self.frame, anchor="nw", tags="self.frame")
self.frame.bind("<Configure>", self.onFrameConfigure)
self.populate()
def populate(self):
button = tk.Button(root, text='Prev')
button.grid(row=0, columns=1, sticky = "w")
for row in range(1,100):
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):
'''Reset the scroll region to encompass the inner frame'''
self.canvas.configure(scrollregion=self.canvas.bbox("all"))
if __name__ == "__main__":
root=tk.Tk()
root.columnconfigure(0, weight = 1)
root.rowconfigure(1, weight = 1)
Example(root).grid(row = 1)
root.mainloop()