DGifGetScreenDesc 137 lib/dgif_lib.c if (DGifGetScreenDesc(GifFile) == GIF_ERROR) { DGifGetScreenDesc 211 lib/dgif_lib.c if (DGifGetScreenDesc(GifFile) == GIF_ERROR) { DGifGetScreenDesc 201 lib/gif_lib.h int DGifGetScreenDesc(GifFileType *GifFile);