Tkinter中Treeview未嵌入指定Frame，占满全屏问题求助

问题根源 #

你的代码里存在一个Tkinter布局的典型错误：

owner_data_Frame = Frame(self.root, bd=2, relief = "solid").place(x=34, y=600, width = 1032, height = 189)

place()方法的返回值是None，这意味着owner_data_Frame实际是None。当Treeview的父组件被设为None时，Tkinter会默认将其挂载到根窗口root上，最终导致Treeview占满整个屏幕。

修正方案 #

拆分Frame的创建与布局步骤，先实例化Frame对象，再单独调用place()方法完成布局：

class employeeClass:
    def __init__(self,root):
        self.root = root
        self.root.geometry("1098x822+342+83")
        self.root.title("Owner")
        self.root.config(bg = "white")
        self.root.focus_force()

        # 先创建Frame对象，再执行布局
        owner_data_Frame = Frame(self.root, bd=2, relief = "solid")
        owner_data_Frame.place(x=34, y=600, width = 1032, height = 189)
        
        # 此时Treeview的父组件为正确的Frame实例
        self.OwnerTable = ttk.Treeview(owner_data_Frame, columns = ("owner_id", "name", "phone_no", "aadhaar_no", "address", "city", "state", "pincode"))

        self.OwnerTable.heading("owner_id", text = "Owner ID")
        self.OwnerTable.heading("name", text = "Name")
        self.OwnerTable.heading("phone_no", text = "Phone No.")
        self.OwnerTable.heading("aadhaar_no", text = "Aadhaar No.")
        self.OwnerTable.heading("address", text = "Address")
        self.OwnerTable.heading("city", text = "City")
        self.OwnerTable.heading("state", text = "State")
        self.OwnerTable.heading("pincode", text = "Pincode")

        self.OwnerTable["show"] = "headings"

        self.OwnerTable.pack(fill=BOTH, expand=1)

if __name__ == "__main__":
    from tkinter import Tk, Frame, ttk  # 补充必要导入，避免运行报错
    root = Tk()
    obj = employeeClass(root)
    root.mainloop()

额外提示 #

• 可以给Frame添加背景色（如bg="lightgray"），方便直观确认Frame的位置和尺寸是否符合预期
• 同一父组件内不要混用pack()、place()、grid()三种布局方法，本次代码中Frame用place、Treeview在Frame内用pack的组合是合理的

内容的提问来源于stack exchange，提问作者Manya Garg