我不能讓畫布工作，我想如何去

Question

我爲我正在設計的設計創建了一個GUI，並且畫布在新窗口中彈出。我試圖讓它出現在按鈕下方。

__author__ = 'Isaac Alderton' 
__authorEmail__ = 'Isaacary92@gmail.com' 
from Tkinter import * 

class Application(Frame): 
""" My smart board application""" 
def __init__(self, master): 
    Frame.__init__(self, master) 
    self.grid() 
    self.create_widgets() 

def create_widgets(self): 

#Button1 
#buttons ment to span across the width of the page 
#needs linking to google calander 
    self.button1 = Button(self, text = "  Calandar  ") 
    self.button1.grid(row=1,column = 1) 

#button2 
    self.button2 = Button(self, text = "  weather  ") 
    self.button2.grid(row=1,column = 2) 

#button3 
#defult home menu in the future user sets a new home 
    self.button3 = Button(self, text = "  Whiteboard  ") 
    self.button3.grid(row=1,column = 3) 

#button4 
    self.button4 = Button(self, text = "  Internet  ") 
    self.button4.grid(row=1,column = 4) 

#button5 
    self.button5 = Button(self, text = "  Settings  ") 
    self.button5.grid(row=1,column = 5) 
#def settings(): 
    #pop up window where the settings options have wifi screen brightness  sleep options 
    #and also account settings 
    #One day also ui changes so color themes etc 

#Canvas 
#canvas ment to be part of whiteboard screen not a "pop-up" 
#canvas is ment to fill the whole page 


def xy(event): 
    global lastx, lasty 
    lastx, lasty = event.x, event.y 

def addLine(event): 
    global lastx, lasty 
    canvas.create_line((lastx, lasty, event.x, event.y)) 
    lastx, lasty = event.x, event.y 

root = Tk() 
root.columnconfigure(0, weight=1) 
root.rowconfigure(0, weight=1) 

canvas = Canvas(root) 
canvas.grid(column=5, row=4,) 
canvas.bind("<Button-1>", xy) 
canvas.bind("<B1-Motion>", addLine) 





#endof canvas 
root = Tk() 
root.title("Smartboard") 
#Geometry is ment to fit device???? 

root.geometry("530x500") 
app = Application(root) 

root.mainloop() 


# Copyright {2015} {Isaac Alderton} 

Answer 1

你的問題是，你的代碼的最後一節是：

root = Tk() 
#... 
canvas = Canvas(root) 
#... 
#endof canvas 
root = Tk() 
#... 
app = Application(root) 

您正在創建一個窗口，增加你的畫布，然後創建一個新的窗口，並添加幀到新窗口。如果你註釋掉第二個root = Tk()，它可以正常工作。調整佈局：

__author__ = 'Isaac Alderton' 
__authorEmail__ = 'Isaacary92@gmail.com' 
from Tkinter import * 

class Application(Frame): 
    """ My smart board application""" 
    def __init__(self, master): 
     Frame.__init__(self, master) 
     self.grid(column=0, row=0, sticky="ew") 
     self.create_widgets() 
     for i in range(5): 
      self.columnconfigure(i, weight=1) 
     self.rowconfigure(0, weight=1) 

    def create_widgets(self): 

    #Button1 
    #buttons ment to span across the width of the page 
    #needs linking to google calander 
     self.button1 = Button(self, text = "  Calandar  ") 
     self.button1.grid(row=0, column = 0, sticky="ew") 

    #button2 
     self.button2 = Button(self, text = "  weather  ") 
     self.button2.grid(row=0, column = 1, sticky="ew") 

    #button3 
    #defult home menu in the future user sets a new home 
     self.button3 = Button(self, text = "  Whiteboard  ") 
     self.button3.grid(row=0, column = 2, sticky="ew") 

    #button4 
     self.button4 = Button(self, text = "  Internet  ") 
     self.button4.grid(row=0, column = 3, sticky="ew") 

    #button5 
     self.button5 = Button(self, text = "  Settings  ") 
     self.button5.grid(row=0, column = 4, sticky="ew") 
    #def settings(): 
     #pop up window where the settings options have wifi screen brightness  sleep options 
     #and also account settings 
     #One day also ui changes so color themes etc 

#Canvas 
#canvas ment to be part of whiteboard screen not a "pop-up" 
#canvas is ment to fill the whole page 


def xy(event): 
    global lastx, lasty 
    lastx, lasty = event.x, event.y 

def addLine(event): 
    global lastx, lasty 
    canvas.create_line((lastx, lasty, event.x, event.y)) 
    lastx, lasty = event.x, event.y 

root = Tk() 
root.columnconfigure(0, weight=1) 
root.rowconfigure(1, weight=1) 

canvas = Canvas(root) 
canvas.grid(column=0, row=1, sticky="nesw") 
canvas.bind("<Button-1>", xy) 
canvas.bind("<B1-Motion>", addLine) 





#endof canvas 
#root = Tk() 
root.title("Smartboard") 
#Geometry is ment to fit device???? 

root.geometry("530x500") 
app = Application(root) 

root.mainloop() 


# Copyright {2015} {Isaac Alderton} 

給出：