Man page - sdl_setwindowmouserect(3)

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Package: libsdl3-doc
apt-get install libsdl3-doc

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SDL_SetWindowMouseRect - Confines the cursor to the specified area of a window.

Defined in SDL3/SDL_video.h

#include "SDL3/SDL.h"

bool SDL_SetWindowMouseRect(SDL_Window *window, const SDL_Rect *rect);

Note that this does NOT grab the cursor, it only defines the area a cursor is restricted to when the window has mouse focus.

	window		the window that will be associated with the barrier.
	rect		a rectangle area in window-relative coordinates. If NULL the barrier for the specified window will be destroyed.

Returns true on success or false on failure; call

SDL_GetError () for more information.

This function should only be called on the main thread.

This function is available since SDL 3.2.0.