Question

我最近一直在使用WxPython来创建一个像思科数据包跟踪器这样的GUI网络模拟器，但如果我说实话，那么我很难找到我需要的例子等等.Iv又回到了老忠实的Tk。

到目前为止，我的程序有一个菜单栏，其中包含一个文件＆gt;出口。它还在应用程序的右下方有一个Exit按钮。除此之外，它还有一个设定尺寸的画布和各种按钮，点击它们时会在画布上产生一个小硬件图像。这是使用PIL

完成的

接下来我需要的是能够在画布上拖动这些图像，这证明有点困难。我已经看了下面的例子，它是如何分解的，我有点理解你是如何需要点击定义，动作（从a到b）和发布定义，但是我如何将它应用到我的代码中我已经有了？

以下是我在上面引用的内容的链接： http://www.python-forum.org/pythonforum/viewtopic.php?f=4&p=75789

最后这是我已有的代码。我可以理解我的代码的布局和结构并不是很好，因为我对编程很新，但任何指导/示例/视觉表示都会很棒。

  from Tkinter import*
from PIL import Image, ImageTk
class AllTkinterWidgets:
    def __init__(self, master):
        frame= Frame(master, width=900, height=600)
        frame.pack()

        iframe5 = Frame (frame, bd=2, relief=RAISED)
        iframe5.pack(expand=1, fill=X, pady=10, padx=5)

        c = Canvas(iframe5, bg='white', width=600, height=500)
        c.pack()

    # definitions to print hardware images to the canvas
    # -----------------------------------------------------------------------
        def show_imageRouter():
            c.create_image(30,30, image=image1)

        def show_imageSwitch():
            c.create_image(30,60, image=image2)

        def show_imageServer():
            c.create_image(30,100, image=image3)

        def show_imageIpPhone():
            c.create_image(30,140, image=image4)

        def show_imageWirelessRouter():
            c.create_image(30,180, image=image5)

        def show_imageHost():
            c.create_image(30, 220, image=image6)

    # Network hardware buttons created
    # ----------------------------------------------------
        self.button = Button(frame, text = "Router", height= 1, width= 8, padx=2, pady=2,command=show_imageRouter)
        self.button.pack(side = LEFT)

        self.button = Button(frame, text = "Switch",height= 1, width= 8, padx=2, pady=2, command=show_imageSwitch)
        self.button.pack(side = LEFT)

        self.button = Button(frame, text = "Server",height= 1, width= 8, padx=2, pady=2, command=show_imageServer)
        self.button.pack(side = LEFT)

        self.button = Button(frame, text = "IP Phone",height= 1, width= 8, padx=2, pady=2, command=show_imageIpPhone)
        self.button.pack(side = LEFT)

        self.button = Button(frame, text = "Wireless Router",height= 1, width= 12, padx=2, pady=2, command=show_imageWirelessRouter)
        self.button.pack(side = LEFT)

        self.button = Button(frame, text = "Host",height= 1, width= 8, padx=2, pady=2, command=show_imageHost)
        self.button.pack(side = LEFT)

        self.button = Button(frame, text = "Cabling",height= 1, width= 8, padx=2, pady=2)
        self.button.pack(side = LEFT)

        self.button = Button(frame, text = "Square",height= 1, width= 8, padx=2, pady=2)
        self.button.pack(side = LEFT)

    # Create the image objects for the hardware Images
    # ----------------------------------------------------------------------
        imageFile = "router.png"
        image1 = ImageTk.PhotoImage(Image.open(imageFile))

        imageFile = "switch.png"
        image2 = ImageTk.PhotoImage(Image.open(imageFile))

        imageFile = "Server.png"
        image3 = ImageTk.PhotoImage(Image.open(imageFile))

        imageFile = "ipPhone.png"
        image4 = ImageTk.PhotoImage(Image.open(imageFile))

        imageFile = "WirelessRouter.png"
        image5 = ImageTk.PhotoImage(Image.open(imageFile))

        imageFile = "Host.png"
        image6 = ImageTk.PhotoImage(Image.open(imageFile))

root = Tk()
all = AllTkinterWidgets(root)

def Exit():
    print "Exit"

# Create an Exit Button
toolbar = Frame(root)
b = Button(toolbar, text="Exit", width=6, height=3, command=Exit)
b.pack(side=RIGHT, padx=2, pady=2)
toolbar.pack(side=BOTTOM, fill=X)

# Press Esc to quit
root.bind("<Escape>", exit)

# Creation of a menu File > Exit
menu = Menu(root)
root.config(menu=menu)

filemenu = Menu(menu)
menu.add_cascade(label="File", menu=filemenu)
filemenu.add_command(label="Exit", command=Exit)

root.mainloop()

对不起，如果缩进有点奇怪。我已经调整它以使它在这里阻塞。

Answer 1

This answer问题“用于移动椭圆的绘图代码”显示了如何在画布上拖动对象。

使用Tkinter的GUI应用程序 - 拖放

1 个答案: