有没有人知道任何替代方案： root = tk（）
当我运行我的程序时，多个窗口同时运行，只是想知道是否有替代方案，以便它们都不会同时打开。当按下初始窗口上的按钮时，应该在程序运行后立即打开第二个窗口。我也试过用： root = Toplevel（） 但结果是一样的。 有任何想法吗？感谢
def Search_Inventory():
#---First Window----
root = Toplevel()
root.title("Warehouse Inventory Control System")
root.configure(bg = "black")
#----Title displayed under the company logo on the first window----
Title_Screen = Label(root,
text="Warehouse Inventory Control System",
fg="grey",
bg="black",
font="Helevetica 25 bold",
pady = "50",
padx = "50",
).grid(row=3, column=4)
#----Interactive Input Boxes for the User----
#----Label to Notify what is needed in the entry box----
PN_Info_Label = Label(root,
text = "Part Number:",
fg="white",
bg="black",
font="Helevetica 15 bold",
padx = 50,
).grid(row=14, column=3, rowspan = 2)
#----Input Box for Part Number
PN_Display = StringVar()
Input_PartNumber = Entry(root,
textvariable=PN_Display,
fg = "blue",
font = "Helevtica 25 bold",
).grid(row=14, column=4)
#----A button that will proceed to the next part of the program----
Search_Button = Button(root,
text = "Search Inventory",
fg = "Blue",
bg = "Grey",
bd = 2,
font="Helevetica 15 bold",
command=lambda:Search_Prod(PN_Display.get()),
height = 1,
width = 15,
).grid(row=16, column=4,pady = 25,padx = 25,)
#----Information regarding how to enter the part number---
Info = Label(root,
text="Please Use Capitals to Enter Part Number",
fg= "red",
bg = "black",
font = "helevetica 12 bold",
).grid(row = 15, column = 4)
#----Adding the company logo to the first window----
photo = PhotoImage(file="image.gif")
photoLabel = Label(image=photo)
photoLabel.image = photo
photoLabel.grid(row=1, column=4, pady = 10)
#----Linking the Help Document----
Help_Button = Button(root,
text = "Help",
command=Help_PDF,
fg = "Red",
bg = "Black",
height = "1",
bd = "2",
font = "Helevetica 20 bold",
width = "4",
).grid(row=0, column=5, pady= 10,padx = 50, sticky = E)
#----Saying who the program was made by----
Credits = Label(root,
text = "Created By: Me",
fg = "White",
bg = "Black",
font = "Helevetica 10 underline",
).grid(row = 19, column = 5)
#To Make Sure that the window doesn't close
root.mainloop()
那个意味着以后运行但直接运行的子程序。
root_menu = frame()
root_menu.title("Warehouse Inventory Control System")
root_menu.configure(bg = "black")
photo = PhotoImage(file="logo.gif")
photoLabel = Label(image=photo)
photoLabel.image = photo
photoLabel.grid(row=1, column=3,columnspan = 4, sticky = N)
Title_Screen = Label(root_menu,
text="Welcome to the SsangYong\n Warehouse Inventory Control System",
fg="grey",
bg="black",
font="Helevetica 25 bold",
pady = "50",
padx = "50",
).grid(row=2, column=3)
Search_Inventory = Button(root_menu,
command = Search_Inventory(),
text = "Search Inventory",
fg = "Blue",
bg = "Grey",
bd = 2,
font="Helevetica 12 bold",
height = 1,
width = 50,
).grid(row=16, column=3,pady = 25,padx = 25,)
Add_Stock = Button(root_menu,
text = "Add New Items",
fg = "Blue",
bg = "Grey",
bd = 2,
font="Helevetica 12 bold",
height = 1,
width = 60,
).grid(row=15, column=3,pady = 25,padx = 25,)
Print_Report = Button(root_menu,
text = "Print Stock Report",
fg = "Blue",
bg = "Grey",
bd = 2,
font="Helevetica 12 bold",
height = 1,
width = 70,
).grid(row=17, column=3,pady = 25,padx = 25,)
Help_Button = Button(root_menu,
text = "Help",
command=Help_PDF,
fg = "Red",
bg = "Black",
height = "1",
bd = "2",
font = "Helevetica 20 bold",
width = "4",
).grid(row=1, column=3,rowspan = 2, sticky= NE)
Credits = Label(root,
text = "Created By:mk",
fg = "White",
bg = "Black",
font = "Helevetica 10 underline",
).grid(row = 19, column = 5)
root_menu.mainloop()
这是最初弹出的意思，但与另一个完全混淆。
答案 0 :(得分：1)
有没有人知道任何替代方案：
root = tk()[原文如此]
别无选择。 tkinter应用程序绝对必须有一个根窗口。如果您没有明确地创建一个（并且您应该），那么在您第一次创建任何其他小部件时将为您创建一个。
当按下初始窗口上的按钮时，应该在程序运行后立即打开第二个窗口。
原因是您要告诉它立即打开。看看这段代码：
Search_Inventory = Button(root_menu,
command = Search_Inventory(),
以上代码与此相同：
result = Search_Inventory()
Search_Inventory = Button(root_menu, command=result)
注意命令中缺少()。 command属性需要引用到函数。
答案 1 :(得分：0)
command=需要函数名称 - 回调 - 这意味着没有()
但是
中有()
command = Search_Inventory()
这就是为什么在开始时执行，而不是在你点击按钮
时执行 BTW：tkinter只需要一个mainloop() - 如果您使用两个mainloop()，那么它的工作方式不正确。
编辑：图片问题是因为您没有在第二个窗口中为Label设置父级
photoLabel = Label(image=photo)
所以它使用主窗口作为默认
你需要
photoLabel = Label(root, image=photo)
编辑：最小工作代码
from tkinter import *
def Help_PDF():
pass
def Search_Inventory():
#--- Second Window ----
root = Toplevel()
Title_Screen = Label(root, text="Warehouse Inventory Control System")
Title_Screen.grid(row=3, column=4)
PN_Info_Label = Label(root, text="Part Number:")
PN_Info_Label.grid(row=14, column=3, rowspan=2)
PN_Display = StringVar()
Input_PartNumber = Entry(root, textvariable=PN_Display)
Input_PartNumber.grid(row=14, column=4)
Search_Button = Button(root, text="Search Inventory",
command=lambda:Search_Prod(PN_Display.get()))
Search_Button.grid(row=16, column=4, pady=25, padx=25)
Info = Label(root, text="Please Use Capitals to Enter Part Number")
Info.grid(row=15, column=4)
photo = PhotoImage(file="image.gif")
photoLabel = Label(root, image=photo)
photoLabel.image = photo
photoLabel.grid(row=1, column=4, pady=10)
Help_Button = Button(root, text="Help",
command=Help_PDF)
Help_Button.grid(row=0, column=5, pady=10, padx=50, sticky=E)
Credits = Label(root, text="Created By: Me")
Credits.grid(row=19, column=5)
# --- First Window ---
root_menu = Tk()
photo = PhotoImage(file="logo.gif")
photoLabel = Label(root_menu, image=photo)
photoLabel.image = photo
photoLabel.grid(row=1, column=3, columnspan=4, sticky=N)
Title_Screen = Label(root_menu, text="Welcome to the SsangYong\n Warehouse Inventory Control System",)
Title_Screen.grid(row=2, column=3)
Search_Inventory = Button(root_menu, text="Search Inventory",
command=Search_Inventory)
Search_Inventory.grid(row=16, column=3, pady=25, padx=25)
Add_Stock = Button(root_menu, text="Add New Items")
Add_Stock.grid(row=15, column=3, pady=25, padx=25)
Print_Report = Button(root_menu, text="Print Stock Report")
Print_Report.grid(row=17, column=3, pady=25, padx=25)
Help_Button = Button(root_menu, text="Help",
command=Help_PDF)
Help_Button.grid(row=1, column=3, rowspan=2, sticky=NE)
Credits = Label(root_menu, text="Created By:mk")
Credits.grid(row=19, column=5)
root_menu.mainloop()