How can the problem of a CustomButton being displayed outside of the boundary be resolved when utilizing wxScrollWindow?

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One way to resolve this issue is by adjusting the size and position of the CustomButton based on the scroll position of the wxScrollWindow. When the user scrolls, the scroll position can be obtained and the position and size of the button can be updated accordingly. Specifically, the x and y positions of the button can be adjusted by subtracting the scroll position from the original position, and the width and height of the button can be adjusted by comparing the boundaries of the button and the scroll window.

Alternatively, you can wrap the CustomButton in a custom panel or sizer that automatically resizes and repositions the button based on the current scroll position. This way, you don't have to manually adjust the button's position and size every time the user scrolls.

Another option is to listen for scroll events and redraw the entire window every time the user scrolls. This can be resource intensive, so it should only be used as a last resort.

Overall, the key is to ensure that the CustomButton stays within the boundaries of the wxScrollWindow at all times, even as the user scrolls.