mouse input x, y is absolute not relative to window winapi

[TimonPost]

The y position in with a mouse event is not relative to the window but absolute to screen buffer. This means that when the mouse cursor is at top left it will be x: 0, y: 2295 (y = number of cells counting from the top of the buffer) instead of 0,0 to the window.

As you can see the cursor is at: x: 0, y: 2858, although I have the mouse at the top left. We can calculate the relative cursor position very easily. With winapi you can request the current window positions, this structure contains the top, left, bottom, right properties of were the window is in the screen buffer.

We can calculate the absolute with the following:

    let xpos = event.mouse_position.x;
    let ypos = event.mouse_position.y;

    let buffer = ScreenBuffer::current().unwrap().info().unwrap();
    let window_size = buffer.terminal_window();

    println!("windows size: {:?}", window_size);
    println!("absolute mouse position: x: {:?}, y: {:?}", xpos, ypos);
    println!("relative mouse position: x: {:?}, y: {:?}", xpos, ypos - window_size.top);