struct myrec
{
char *test;
};
myrec *rec,record;
dbref=DmOpenDatabaseByTypeCreator(DBTYPE,CREATORID,dmModeReadWrite);
if(!dbref)
FrmCustomAlert(DummyAlert,"error","","");
field1= (FieldPtr) GetObjectPtr(AddrecIDField);
record.test=FldGetTextPtr(field1);
FrmCustomAlert(DummyAlert,record.test,"","");
UInt16 at=dmMaxRecordIndex;
VoidHand q= DmNewRecord(dbref,&at,sizeof(myrec));
rec=(myrec *) MemHandleLock(q);
DmWrite(rec,0,&record,sizeof(record)); // i have doubt in this
statement ie; specifying offset as zero
MemHandleUnlock(q);
DmReleaseRecord(dbref,at,true);
DmCloseDatabase(dbref);
i am using this code and i feel that its overwriting the existing record
even though i have opened the database using
dmModeReadwrite mode.please suggest if any corrections to be made.
please anybody give me code snippets to append , modify and delete records
from a database.
and also for reading records one by one till end of file.
regrds
reshma
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