Keeping the mouse inside the window when a GUI screen is up

[SoLegendary]

Following creating a top-down view mod of the game, I want to also be able to pan the camera in the X-Z plane by moving the mouse to the edges of the screen, like a classic top-down strategy game or MOBA. This works fine in full screen, but in windowed mode, there is nothing keeping the mouse inside the window so it's very easy to just move off of it out to the desktop and subsequently lost. Since mouse coordinates are only tracked on every tick, moving the mouse to the edges really fast also means it's last known coordinates may be too far from the edge to begin panning.

As a bonus, if this is possible, could it also be made active only for certain GUI screens so that the user can still get the mouse out without having to alt-tab?

I know what I'm trying to do might be out of scope of what Forge can do since it deals with the application window itself, I still want to make sure there isn't any in-forge options I'm missing.

Edited December 1, 2021 by SoLegendary
clarifying sentence