Hi all.
I have been trying to figure this one out for a while not. Here's my
code.static Boolean
NewJobFormHandleEvent (EventPtr event)
{
Boolean handled = false;
FormPtr frm; //form pointer
FieldPtr custfld,namefld,phonefld,contactfld;
VoidHand txth;
UInt pos;
Err e;
CALLBACK_PROLOGUE
switch (event->eType)
{
case ctlSelectEvent:
switch (event->data.ctlEnter.controlID)
{
case donebutton:
frm = FrmGetActiveForm();
// save data new record
EditMode = false;
custfld =
FrmGetObjectPtr(frm,FrmGetObjectIndex(frm,customername));
unpackeddata.fields[icustomer] = FldGetTextPtr(custfld);
namefld =
FrmGetObjectPtr(frm,FrmGetObjectIndex(frm,jobname));
unpackeddata.fields[iname] = FldGetTextPtr(namefld);
contactfld =
FrmGetObjectPtr(frm,FrmGetObjectIndex(frm,contact));
unpackeddata.fields[icontact] = FldGetTextPtr(contactfld);
phonefld =
FrmGetObjectPtr(frm,FrmGetObjectIndex(frm,phone));
unpackeddata.fields[iphone] = FldGetTextPtr(phonefld);
unpackeddata.fields[inumber] = NULL;
unpackeddata.fields[istatus] = NULL;
// Works fine to here. data is transfered into array of charptr's just
fine. Then I call jobnew record...
pos = 0;
e = JobNewRecord(JobTrackerListDb,&unpackeddata,&pos);
FrmGotoForm(joblistform);
break;
}
break;
UInt JobUnpackedSize(JobListDataPtr r)
{
UInt size;
Int index;
// size = sizeof (PackedJobListData) - sizeof (char); // takes
account of first fields
for (index = FirstJobField; index < JobFieldCount; index++)
{
if (r->fields[index] != NULL)
size += StrLen(r->fields[index]) + 1;
}
return size;
}
Err JobNewRecord(DmOpenRef dbP, JobListDataPtr r, UInt *index)
{
VoidHand recordH;
Err err;
VoidPtr recordP;
UInt newIndex;
Long size;
CharPtr s;
// for some reason, the next call isn't returning any size. I check in
the routine, and the size is right, but it doesn't return??
size = JobUnpackedSize(r);
recordH = DmNewHandle(dbP,size );
if (recordH == NULL)
return dmErrMemError;
recordP = MemHandleLock(recordH);
if (recordP == NULL) ErrDisplay("locked handle but invalid");
//this error doesn't show up
JobListPack(recordP,r); //dest src
...
static void JobListPack(VoidPtr dest,
JobListDataPtr src)
{
JobListDataFlags flags = 0;
UInt size;
ULong offset = 0;
CharPtr srcP;
Int index;
UInt len;
offset =+ sizeof(JobListDataFlags);
for (index = FirstJobField; index < JobFieldCount; index++) {
if (src->fields[index] != NULL)
{
ErrFatalDisplayIf(src->fields[index][0] == '\0' ,
"Empty field being added");
srcP = src->fields[index];
len = StrLen(srcP) + 1;
DmWrite(dest, offset, srcP, len);
// get an error here, "DmWriteCheck failed"
offset += len;
SetBitMacro(flags, index);
}
}
DmWrite(dest, 0, &flags, sizeof(flags));
}
The unpackedjobdata is an instance of a struct with an array of
charptr's. No rocket science.
Something is getting corrupted somewhere, and darned if I can figure it
out. Is the way I am getting the fielddata into my charptr right?
FldGetTextPtr returns a charptr, doesn't it? All I do prior to this
code is show a form with 4 fields in it, with a done button at the
bottom. Any help at all? The database code is copied mostly from the
addressbook example. I use GCC.
Thanks
Derek
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