问题是，当在双击子程序中创建一些对象时，网格会搞砸。树视图向右扩展一点，并且假设在第1列中的标签和按钮看起来像在第3列中（在第3列的树视图上方的按钮上）。此外，当我尝试制作一个按钮时，它将它放在树视图上方，无论它的行。 代码：
from tkinter import *
import os
import datetime
import sqlite3
from tkinter.ttk import Combobox,Treeview,Scrollbar
class Application(Frame):
""" Binary to Decimal """
def __init__(self, master):
""" Initialize the frame. """
super(Application, self).__init__(master)
self.grid()
self.create_GUI()
def Quit(self):
self.master.destroy()
def create_GUI(self):
self.title_lbl = Label(self, text = "Students")
self.title_lbl.grid(row = 0, column = 2)
self.fn_lbl = Label(self, text = "First Name:")
self.fn_lbl.grid(row = 1 , column = 1)
self.fn_txt = Entry(self)
self.fn_txt.grid(row = 1, column = 2)
self.ln_lbl =Label(self, text = "Last Name:")
self.ln_lbl.grid(row = 2, column = 1)
self.ln_txt = Entry(self)
self.ln_txt.grid(row = 2, column = 2)
self.q_btn = Button(self, text = "Back",padx=80,pady=10, command = lambda: self.Quit)
self.q_btn.grid(row = 3, column = 0)
self.s_btn = Button(self, text = "search",padx=80,pady=10, command = lambda: self.search())
self.s_btn.grid(row = 3,column = 3)
self.tree = Treeview(self.master,height = 6)
self.tree["columns"] = ("StudentID","First Name","Last Name")#,"House Number", "Street Name", "Town Or City Name","PostCode","MobilePhoneNumber")
self.tree.column("StudentID",width = 20)
self.tree.column("First Name",width = 40)
self.tree.column("Last Name", width = 40)
## self.tree.column("House Number", width = 60)
## self.tree.column("Street Name", width = 60)
## self.tree.column("Town Or City Name", width = 60)
## self.tree.column("PostCode", width = 60)
## self.tree.column("MobilePhoneNumber", width = 60)
self.tree.heading("StudentID",text="StudentID")
self.tree.heading("First Name",text="First Name")
self.tree.heading("Last Name",text="Last Name")
## self.tree.heading("House Number",text="House Number")
## self.tree.heading("Street Name",text="Street Name")
## self.tree.heading("Town Or City Name",text="Town Or City Name")
## self.tree.heading("PostCode",text="PostCode")
## self.tree.heading("MobilePhoneNumber",text="MobilePhoneNumber")
self.tree["show"] = "headings"
yscrollbar = Scrollbar(self.master, orient='vertical', command=self.tree.yview)
xscrollbar = Scrollbar(self.master, orient='horizontal', command=self.tree.xview)
self.tree.configure(yscroll=yscrollbar.set, xscroll=xscrollbar.set)
yscrollbar.grid(row=4, column=3, padx=2, pady=2, sticky=NS)
self.tree.grid(row=4,column=0,columnspan =5, padx=2,pady=2,sticky =NSEW)
self.tree.bind("<Double-1>",lambda event :self.OnDoubleClick(event))
def OnDoubleClick(self, event):
curItem = self.tree.focus()
contents =(self.tree.item(curItem))
StudentDetails = contents['values']
print(StudentDetails)
self.tStudentID=StringVar()
self.tFirstName = StringVar()
self.tLastName = StringVar()
self.tHouseNumber = StringVar()
self.tStreetName = StringVar()
self.tTownOrCityName = StringVar()
self.tPostCode = StringVar()
self.tEmail = StringVar()
self.tMobilePhoneNumber = StringVar()
self.tStudentID.set(StudentDetails[0])
self.tFirstName.set(StudentDetails[1])
self.tLastName.set(StudentDetails[2])
self.tHouseNumber.set(StudentDetails[3])
self.tStreetName.set(StudentDetails[4])
self.tTownOrCityName.set(StudentDetails[5])
self.tPostCode.set(StudentDetails[6])
self.tEmail.set(StudentDetails[7])
self.tMobilePhoneNumber.set(StudentDetails[8])
self.inst_lbl0 = Label(self.master, text = "Student ID").grid(row=5,column=0,sticky=W)
self.NStudentID = Label(self.master, textvariable=self.tStudentID).grid(row =5,column=1,stick=W)
self.inst_lbl1 = Label(self.master, text = "First Name").grid(row=6,column=0,sticky=W)
self.NFirstName = Entry(self.master, textvariable=self.tFirstName).grid(row =6,column=1,stick=W)
self.inst_lbl2 = Label(self.master, text = "Last Name").grid(row=7,column=0,sticky=W)
self.NLastName = Entry(self.master, textvariable=self.tLastName).grid(row =7,column=1,stick=W)
self.inst_lbl3 = Label(self.master, text = "House Number").grid(row=8,column=0,sticky=W)
self.HouseNumber = Entry(self.master,textvariable=self.tHouseNumber).grid(row=8,column=1,sticky=W)
self.inst_lbl4 = Label(self.master, text = "Street Name").grid(row=9,column=0,sticky=W)
self.StreetName =Entry(self.master,textvariable=self.tStreetName).grid(row=9,column=1,sticky=W)
self.inst_lbl5 = Label(self.master, text = "Town or City Name").grid(row=10,column=0,sticky=W)
self.TownOrCityName =Entry(self.master,textvariable=self.tTownOrCityName).grid(row=10,column=1,sticky=W)
self.inst_lbl6 = Label(self.master, text = "Postcode").grid(row=11,column=0,sticky=W)
self.PostCode = Entry(self.master,textvariable=self.tPostCode).grid(row=11,column=1,sticky=W)
self.inst_lbl7 = Label(self.master, text = "Email").grid(row=12,column=0,sticky=W)
self.Email =Entry(self.master,textvariable=self.tEmail).grid(row=12,column=1,sticky=W)
self.inst_lbl8 = Label(self.master, text = "Mobile phonenumber").grid(row=13,column=0,sticky=W)
self.MobilePhoneNumber =Entry(self.master,textvariable=self.tMobilePhoneNumber).grid(row=13,column=1,sticky=W)
self.btnSaveChanges = Button(self, text = "save changes",padx=80,pady=10,command = lambda:self.SaveChanges).grid(row=14,column=0,sticky=W)
#self.btnSaveChanges = Button(self, text = "delete record",padx=80,pady=10,command = lambda:self.DeleteRecord).grid(row=14,column=1,sticky=W)
def search(self):
FirstName = self.fn_txt.get()
LastName = self.ln_txt.get()
with sqlite3.connect("GuitarLessons.db") as db:
cursor = db.cursor()
cursor.row_factory = sqlite3.Row
sql = "select StudentID,FirstName,LastName,HouseNumber,StreetName,TownOrCityName,PostCode,Email,MobilePhoneNumber"\
" from tblStudents"\
" where FirstName like ?"\
" and LastName like ?"
cursor.execute(sql,("%"+FirstName+"%","%"+LastName+"%",))
StudentList = cursor.fetchall()
print(StudentList)
self.loadStudents(StudentList)
def loadStudents(self,StudentList):
for i in self.tree.get_children():
self.tree.delete(i)
for student in StudentList:
self.tree.insert("" , 0,values=(student[0],student[1],student[2],student[3],student[4],student[5],student[6],student[7],student[8]))
def SaveChanges(self):
with sqlite3.connect("GuitarLessons.db") as db:
cursor = db.cursor()
sql = "update tblStudents set FirstName =?,LastName=?,HouseNumber=?,StreetName=?,TownOrCityName=?,PostCode=?,Email=?,MobilePhoneNumber=? where StudentID=?"
cursor.execute(sql,("%"+NFirstName+"%","%"+NLastName+"%","%"+NHouseNumber+"%","%"+NStreetName+"%","%"+NTownOrCityName+"%","%"+NPostCode+"%","%"+NEmail+"%","%"+NMobilePhoneNumber+"%"))
db.commit()
def DeleteRecord(self):
print("")
root = Tk()
root.title("booking system")
root.geometry("800x800")
root.configure(bg="white")
app = Application(root)
root.mainloop()
答案 0 :(得分：1)
你犯的错误是你试图把所有东西放到一个大的网格中，但填充那个网格的代码分散在整个程序中。您的UI显然有三个不同的部分，您应该以这种方式组织GUI。
为顶部创建框架，为树视图创建框架，为底部创建框架。您可以使用pack将它们放在主窗口中，一个放在另一个窗口的顶部。然后，将其他小部件放在适当的框架中。这样，您在一个部分中所做的更改（添加或删除列或行，切换到pack等）不会影响其他区域。