The below is the source code of HL SDK''s( old one in 1999 :-< ) model viewer. studiohdr_t *CMdlLoader::LoadModel( char *modelname ) { FILE *fp; long size; void *buffer;//pointer to file // load the model if( (fp = fopen( modelname, "rb" )) == NULL) { MessageBox( NULL, "unable to open model file", "Mdl Viewer", MB_ICONERROR|MB_OK ); exit(1); } fseek( fp, 0, SEEK_END ); size = ftell( fp ); fseek( fp, 0, SEEK_SET ); buffer = malloc( size ); fread( buffer, size, 1, fp ); // Skip / loading textures fclose( fp ); return (studiohdr_t *)buffer; } I''m curious about returning part. How can the buffer be changed to studiohdr_t? (studiohdr_t is the structure that has model''s info) There were no more funcions about loading models except loading textures.