SDL_ShowCursor (3) Linux Manual Page
SDL_ShowCursor – Toggle whether or not the cursor is shown on the screen.
Synopsis
#include "SDL.h" int SDL_ShowCursor(int toggle);
Description
Toggle whether or not the cursor is shown on the screen. Passing SDL_ENABLE displays the cursor and passing SDL_DISABLE hides it. The current state of the mouse cursor can be queried by passing SDL_QUERY, either SDL_DISABLE or SDL_ENABLE will be returned. The cursor starts off displayed, but can be turned off.