I can see a several things wrong with this code. I don't know which
(if any) would lead to a bus error (possibly the third one):
* When calling UnpackReminder, you lock h, but you don't later unlock it.
* When calling DmWrite, you don't first resize h to have the same size as h2.
* DmWrite takes a pointer as the third parameter -- you're passing a
handle. I'm amazed that your compiler is not complaining about this!
-- Keith
At 7:44 PM -0600 12/11/01, Sean McMains wrote:
>I'm trying to save the results from a form with 2 fields in it into
>my application's database. In the debugger, everything appears to be
>working ok up until I get to the DmWrite call, when my app throws a
>bus error in POSE.
>
>static void EditReminderFormSave()
>{
> Reminder r;
> MemHandle h, h2;
> FieldType* fld;
> UInt32 size;
>
> // Get Record from DB
> h = DmGetRecord( gDB, gCurrentRecord - 1 );
> UnpackReminder( &r, MemHandleLock( h ) );
>
> // put the text from the fields into the unpacked record
> fld = GetObjectPtr( EditReminderButtonTextField );
> r.buttonText = FldGetTextPtr( fld );
> fld = GetObjectPtr( EditReminderReminderTextField );
> r.reminderText = FldGetTextPtr( fld );
>
> // pack the revised reminder into a new memory handle
> h2 = MemHandleNew( 1 ); // PackReminder will resize the
>handle appropriately
> PackReminder( &r, h2 );
>
> // write the new packed record to the DB and release the record
> size = MemHandleSize( h2 );
> DmWrite( MemHandleLock( h ), 0, h2, size );
> MemHandleUnlock( h );
> DmReleaseRecord( gDB, gCurrentRecord - 1, true );
>}
>
>Can anyone give me a clue as to where this bus error is coming from?
>Thanks in advance for any help!
--
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