python - 使用Tkinter在Python中拖动小部件集合(Dragging collection of widgets around in Python using Tkinter)

Question

Alright, so to start I'm using Python 3.7 with tkinter.

(好的，首先，我将Python 3.7与tkinter一起使用。)

I have a canvas and I can drag a label around with that using the mouse events.

(我有一个画布，可以使用鼠标事件在其中拖动标签。)

My next step is to be able to drag around something on which I can put more widgets.

(我的下一步是能够拖动一些我可以放置更多小部件的东西。)

So imagine a box which has a text box and an image on it, perhaps a combobox too.

(因此，想象一个盒子上有一个文本框和一个图像，也许还有一个组合框。)

That box can then be dragged around.

(然后可以拖动该框。)

I figured perhaps what I needed was a frame widget on my canvas which I could then set up in the same way as I had done with the label.

(我想也许我需要的是画布上的框架小部件，然后可以按照与标签相同的方式进行设置。)

But this is where it seems to fall apart - clearly I'm doing something wrong.

(但这似乎是崩溃的地方-显然我做错了。)

Here's the code I've been playing around with, to no avail:

(这是我一直在玩的代码，无济于事：)

root = tk.Tk()
root.geometry("800x600")

def ClickedCallback(event):
    print(f'Clicked: coords: {event.x}, {event.y}')

def ReleaseCallback(event):
    print(f'Released: coords: {event.x}, {event.y}')

def MotionCallback(event):
    print(f'Motion: coords: {event.x}, {event.y}')
    canvas.coords(frame_id, event.x, event.y)

canvas = tk.Canvas(root, width=1000, height=600, bg='blue')
canvas.bind("<B1-Motion>", MotionCallback)
canvas.pack()

frame = tk.Frame(canvas, bg='green')
frame.pack()

l2 = tk.Label(frame, bg='red')
l2.bind("<Button-1>", ClickedCallback)
l2.pack()
l2['text'] = "Test"


frame_id = canvas.create_window((300,300), window=frame)
label_id = canvas.create_window((100, 100), window=l2)

root.mainloop()

My thinking here is that I attach the frame to the canvas and then the label to the frame so that, f I move the frame, the label within it will be moved too.

(我在这里的想法是，将框架附加到画布上，然后将标签附加到框架上，以便在移动框架时，框架内的标签也将被移动。)

The above won't work though, and it tells me the following:

(上面的方法虽然行不通，但它告诉我以下内容：)

File "C:\Users\JohnSmith\AppData\Local\Programs\Python\Python37-32\lib\tkinter__init__.py", line 2480, in _create *(args + self._options(cnf, kw)))) _tkinter.TclError: can't use .!canvas.!frame.!label in a window item of this canvas

(_create *（args + self._options（cnf，kw））））??_tkinter中的文件“ C：\ Users \ JohnSmith \ AppData \ Local \ Programs \ Python \ Python37-32 \ lib \ tkinter__init __。py”，第2480行。 TclError：无法在此画布的窗口项中使用。！canvas。！frame。！label)

I may be going about this in entirely the wrong way.

(我可能会以完全错误的方式进行此操作。)

I had looked around for something more, but if there's something I'm doing entirely wrong or an established way I should be doing this, I would appreciate it if you could point me in the right direction.

(我已经寻找了更多东西，但是如果我做某件事是完全错误的或者我应该这样做的既定方式，那么如果您能指出正确的方向，我将不胜感激。)

  ask by TheFaithfulLearner translate from so

Answer 1

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