SDL_SetWindowMouseRect - Man Page

#include <SDL3/SDL_video.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.

for more information.

This function should only be called on the main thread.

This function is available since SDL 3.2.0.

SDL_GetWindowMouseRect(3), SDL_GetWindowMouseGrab(3), SDL_SetWindowMouseGrab(3)

SDL_GetWindowMouseGrab(3), SDL_GetWindowMouseRect(3), SDL_SetWindowMouseGrab(3).