"Andy Black" <[EMAIL PROTECTED]> wrote
> I am having some problems getting text from editable text fields and I
think
> the error is in the function below. I can get data from the text field
fine
> the first time around. But, if you edit the text field and then try to get
> the data from the edited field, I get an error that states "Field Object
> Improperly Locked". Here is an example of how I call this function:
>
> stringP = GetLockedPtr (whateverField);
> if (stringP)
> {
> database.stringP = stringP;
> MemPtrUnlock (stringP);
> }
This suggests that you're storing the pointer for later reference, but if
the field editing increases the amount of buffer space required then
PalmOS will resize the chunk, possibly (probably) relocating the chunk
at the same time. This will invalidate your pointer.
In general I think it's advised that you store handles rather than pointers
in database records and even these are questionable since they might be
referred to after a restart when that handle might no longer be allocated
(although since I've never tried to do this I can't state that it's not
valid).
Chris Tutty
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