SDL_GetRelativeMouseState — Retrieve the current state of the mouse
#include "SDL.h"
Uint8
SDL_GetRelativeMouseState( |
int * | x, |
| int * | y); |
The current button state is returned as a button bitmask,
which can be tested using the SDL_BUTTON(X) macros, and
x and y are set to the change in the
mouse position since the last call to SDL_GetRelativeMouseState or since event
initialization. You can pass NULL for either x or y.