Please excuse me, I am sure this question has been asked many times, but I
have looked and have not found a simple database example. I have the book
from O'Reilly and have been learning everything from it. I have successfully
created my database and added a record, however I am having difficulties
retrieving the record, I get garbage.
I viewed my datafile with a utility that I found on the net, and the record
was added correctly so it's in my read code. In short, here is the code that
is not working.
// Packed Ham Structure
typedef struct
{
SDWord hamID;
char name[1]; // actually may be longer than 1
} PackedHam;
// Unpacked Ham Structure
typedef struct
{
SDWord hamID;
const char * name;
const char * callSign;
const char * notes;
} Ham;
static void UnpackHam(Ham * ham, const PackedHam * packedHam)
{
const char *s = packedHam->name;
ham->hamID = packedHam->hamID;
s += StrLen(s) + 1;
ham->name = s;
s += StrLen(s) + 1;
ham->callSign = s;
s += StrLen(s) + 1;
ham->notes = s;
s += StrLen(s) + 1;
}
static void EditFormDisplayFirstRecord()
{
VoidHand rec;
Ham ham;
rec = DmGetRecord(HamCallsDB, 0);
UnpackHam(&ham, MemHandleLock(rec));
MemHandleUnlock(rec);
FrmCustomAlert(HamInfo, ham.name, ham.callSign, ham.notes);
// SetFieldTextFromStr(EditForm_Name, (CharPtr)ham.name);
// SetFieldTextFromStr(EditForm_CallSign, (CharPtr)ham.callSign);
// SetFieldTextFromStr(EditForm_Notes, (CharPtr)ham.notes);
}
After everything is up and running, EditFormDisplayFirstRecord() is executed
by pressing a button on my screen, and it fills my fields in with garbage.
The FrmCustomAlert shows nothing.
Can anyone help or point me towards a simple data example?
Thanks!
Jeremy Cowgar - [EMAIL PROTECTED]
Christian Brotherhood Newsletter
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