初始化(16位)

int Game_Init(void *parms = NULL, int num_parms = 0)
{
 //建立IDirectDraw介面
 if (FAILED(DirectDrawCreateEx(NULL, (void **)&lpdd, IID_IDirectDraw7, NULL)))
    return(0);

 //設定協作層級：全屏
 if (FAILED(lpdd->SetCooperativeLevel(main_window_handle,
            DDSCL_FULLSCREEN | DDSCL_ALLOWMODEX |
            DDSCL_EXCLUSIVE | DDSCL_ALLOWREBOOT)))
    return(0);

 //設定顯示模式:640x480x16
 if (FAILED(lpdd->SetDisplayMode(640, 480, 16,0,0)))
    return(0);

 //建立主顯示介面
 memset(&ddsd,0,sizeof(ddsd));
 ddsd.dwSize = sizeof(ddsd);
 ddsd.dwFlags = DDSD_CAPS;
 ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
 if (FAILED(lpdd->CreateSurface(&ddsd, &lpddsprimary, NULL)))
    return(0);

 return(1);
} // end Game_Init