Grab and save a scrollable canvas including the invisible part

[AdrianPhil]

I've been trying to use img = ImageGrab.grab(bbox=(capture_x1, capture_y1, capture_x2, capture_y2)) to capture and save an image of a scrollable canvas built

    canvas = tk.Canvas(canvasFrame, bg="lightgray", yscrollincrement=10, xscrollincrement=10)
    # Create vertical and horizontal scrollbars for the canvas
    verticalScrollbar = tk.Scrollbar(canvasFrame, orient="vertical", command=canvas.yview)
    horizontalScrollbar = tk.Scrollbar(canvasFrame, orient="horizontal", command=canvas.xview)
    canvas.config(yscrollcommand=verticalScrollbar.set, xscrollcommand=horizontalScrollbar.set)

    # Place the scrollbars around the canvas
    canvas.grid(row=0, column=0, sticky="nsew")
    verticalScrollbar.grid(row=0, column=1, sticky="ns")
    horizontalScrollbar.grid(row=1, column=0, sticky="ew")

    # Configure the grid to expand the canvas as the window resizes
    canvasFrame.grid_rowconfigure(0, weight=1)
    canvasFrame.grid_columnconfigure(0, weight=1)

While I was able to produce a .png file of the visible part of the screen I was not able to produce a capture of the full image.
Is that a limitation of Grab, a bug or is there something more to add to the code?

Thank you, Adrian

[radarhere]

ImageGrab.grab() is currently based on capturing what is visible on the screen, yes.

In order do what you're describing - capture content that isn't visible in the window, but comes from part of the canvas hidden by scrollbars - my suggestion would be to programmatically scroll to the different parts of the canvas, take screen grabs of each of them, and then combine the result using Pillow.

[AdrianPhil]

That is a great clarification.
Clearly not ideal so I should look for printing alternatives as scrolling will not create a great UI experience.