hello keith and others,
i have a strange error for you. it involves pose (d26). i was working
on a bit of code with a CharPtr. i used StrIToA to set the CharPtr, and
then i wrote on the form with that. worked fine.
hours later, i had a good prototype to try on a real device. it crashed
every time with a fatal exception, but it didnt crash in pose. it took
me over an hour to track down the fact that i had not used MemPtrNew on
the CharPtr. when i tried this, it worked fine on both.
so anyway, the error in pose is that it allowed an uninitialized ptr to
be written to, when a real device crashes fatally everytime.
here is the problem in code:
static void SetFieldInt(Int fieldID, UInt value)
{
FieldPtr fld;
CharPtr strP;
FormPtr frm = FrmGetActiveForm();
/* this function crashes a real device, but not pose, with these lines
commented out */
// strP=MemPtrNew(sizeof(CharPtr));
StrIToA(strP, value);
fld = FrmGetObjectPtr(frm, FrmGetObjectIndex(frm, fieldID));
FldDelete(fld, 0, FldGetTextLength(fld));
FldInsert(fld, strP, StrLen(strP));
// MemPtrFree(strP);
}
:P
