Are you looking at the value of DB in a debugger, or are you taking the
return value in 'c'. You allocate c as a single character, yet StrIToA
returns a character pointer, which will require at least two locations. Use
char *c, then allocate space with a call to MemPtrNew.
Regards,
Steve
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]
> Sent: Monday, February 21, 2000 10:19 AM
> To: Palm Developer Forum
> Subject: Error in TableLoadDataFunc
>
>
>
> Can anyone spot the error in this? I'm trying to initialise a
> table prior to
> a FrmDrawForm. The DmNumRecords and DmQuery both seem to
> cause problems.
> With DmNumRecords returning '4092'! when DB only has 2
> records in it. DB is
> a global variable and IRecordTypePtr is a pointer to a record
> structure.
> Preceding functions can call DmNumRecord correctly and I
> can't work out
> what's wrong with this function. Can you help?
>
> Perhaps I don't understand how the OS uses TableLoadDataFunc
> functions. If
> anyone's got some simple source code for setting up and using
> a table that
> would be helpful too.
>
> Thanks in anticipation,
>
> John.
>
> static Err ListViewGetSummary (VoidPtr table, Word row, Word column,
> Boolean editable, VoidHand textH, WordPtr textOffset, WordPtr
> textAllocSize,
> FieldPtr fld)
> {
>
> Word recordNum;
> VoidHand recordH;
> FieldAttrType attr;
> IRecordTypePtr recordP;
> IRecordTypePtr nilPtr = NULL;
> UInt maxrecords = 0;
> char c;
>
> // Get the record number that corresponds to the table item.
> // The record number is stored as the row id.
> recordNum = TblGetRowID (table, row);
>
> ErrDisplay("Check Point 2");
> maxrecords = DmNumRecords(DB);
> ErrDisplay("Check Point 3");
> StrIToA(&c, maxrecords);
> ErrDisplay(&c);
>
> recordH = DmQueryRecord(DB, recordNum);
> ErrFatalDisplayIf ((! recordH), "Record not found");
> ErrDisplay("Check Point 4");
> recordP = (IRecordTypePtr) MemHandleLock(recordH);
>
>
> *textOffset = &recordP->summary - ((CharPtr) recordP);
> *textAllocSize = StrLen (&recordP->summary) + 1; //
> one for null
> terminator
> *textH = recordH;
>
> MemHandleUnlock(recordH);
>
> // Set the field to support auto-shift.
> if (fld)
> {
> FldGetAttributes (fld, &attr);
> attr.autoShift = true;
> FldSetAttributes (fld, &attr);
> }
>
> ErrDisplay("Check Point 4");
> return (0);
> }
>
>
>
> --
> "This message is brought to you by Reuters.net;
> Any views expressed are those of the sender, except where the sender
> specifically states them to be the views of Reuters Limited."
>
> --
> For information on using the Palm Developer Forums, or to
> unsubscribe, please see http://www.palm.com/devzone/mailinglists.html
>
>
--
For information on using the Palm Developer Forums, or to unsubscribe, please see
http://www.palm.com/devzone/mailinglists.html
