bool CSurface::OnDraw(SDL_Surface* Surf_Dest, SDL_Surface* Surf_Src, int X, int Y, int X2, int Y2, int W, int H)
{
    if(Surf_Dest == NULL || Surf_Src == NULL) {
        return false;
    }

    SDL_Rect DestR;

    DestR.x = X;
    DestR.y = Y;

    SDL_Rect SrcR;

    SrcR.x = X2;
    SrcR.y = Y2;
    SrcR.w = W;
    SrcR.h = H;

    SDL_BlitSurface(Surf_Src, &SrcR, Surf_Dest, &DestR);

    return true;
}