Confines the cursor to the specified area of a window.
int SDL_SetWindowMouseRect(SDL_Window * window, const SDL_Rect * rect);
|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 0 on success or a negative error code on failure; call SDL_GetError() for more information.
Note that this does NOT grab the cursor, it only defines the area a cursor is restricted to when the window has mouse focus.
This function is available since SDL 2.0.18.