[Allegro] kursor na full screen

show_mouse( screen );
set_mouse_sprite( kursor );
unscare_mouse();

//...
int mx, my, mb;
myszka()
{
    mx = mouse_x;
    my = mouse_y;
    mb = mouse_b;
}
//...
show_mouse( screen );
scare_mouse(); //myszka niewidoczna
do
{
    myszka();
    clear_to_color( bufor, makecol( //jakis color));
    clear_to_color( bufor1, makecol( //jakis color));
    masked_blit( obrazek, bufor, 0, 0, 0, 0, obrazek->w, obrazek->h ) //przenosisz obrazek na bufor
    masked_blit( kursor, bufor1, 0, 0, mx, my, kursor->w, kursor->h ) //przenosisz kursor na drugi bufor
    masked_blit( bufor, screen, 0, 0, 0, 0, 800, 600 );
    masked ) blit( bufor1, screen, 0, 0, 0, 0, 800, 600 );
    //przenosisz oba bufory na ekran
} while( //warunek);
//...

masked_blit( kursor, bufor, 0, 0, mouse_x, mouse_y, kursor->w, kursor->h );
blit( bufor, screen, 0, 0, 0, 0, bufor->w, bufor->h );