/* Gamelon(tm) File I/O Library Sample Code C Language */
/* (C)1994 Menai Corporation(tm) Released for public use */
/* Example 10a. How to use a Cursor to scan objects in */
/* the top level of an aggregate. */
/* Simple Next and Prior commands can scan across all */
/* the objects on a single level within an aggregate */
/* object. If the cursor starts on the first object */
/* within an aggregate, the Cursor can use a loop with */
/* a Next call to scan each and every object in the */
/* aggregate. For example, if the programmer wished to */
/* set a particular class number for every object in */
/* an aggregate, he or she would use the following */
/* code: */
#include <stdlib.h>
#include "gfcursor.h"
int main(void) {
unsigned long classnum = 4000000;
int answer;
int valid;
CURSOR *c = new_CURSOR(NULL,
"newfile",
AM_SHARED,
NULL,
0);
eCursorQueryValid(c, &valid);
if (!valid)
exit(1);
/* Check that the file has contents. */
eObjQueryAggregateEmpty(c, &answer);
if (answer)
exit(1);
eCursorMoveIn(c);
eCursorMovePreFirst(c);
while (eCursorMoveNext(c, OT_OBJ) == 0) {
eAltModify(c);
eObjSetClass(c, classnum);
eAltCommit(c);
} /* end while */
delete_CURSOR (c);
return 0;
}
Home | Product | Consulting | Programming | Reviews | Company | Site Map | Guest Book
Menai Corporation, 1010 El Camino Real, Suite 300, Menlo Park, California 94025-4335
800-GAMELON (800-426-3566) (US only), 650-853-6450 (voice), 650-853-6453 (fax)
Questions about our products and services: info@menai.com.
Comments about this web site: webmaster@menai.com.
Copyright © 1996-98 Menai Corporation. All Rights Reserved. Menai, Gamelon and gamelon(stylized) are worldwide trademarks of Menai Corporation, registered in the United States of America, and the .[g] logo is a worldwide trademark of Menai Corporation. All other trademarks are owned by their respective owners.