You need to free the handle *instead* of unlocking it. There is no automatic
garbage collection.
> hText is a local variable. Local to the event handling function of the
edit
> form. The AddNoteDoneButton is the button indicating to save the data
> (cancel works fine, it just exits the form) So I didn't think I would
need
> to free hText since it should go away once it is out of scope. I tried
> MemHandleFreeText(hText) just for grins and that got me a memory chunk ptr
> error. (which seems reasonable)
>
> If I leave it as it is I keep getting an error writing directly to screen
> memory. I don't know how one does that since I am only using the
published
> API's. So I suspect some sort of memory stomp perhaps?
>
> Thanks,
> Jim
>
> .
> "Philip Sheard" <[EMAIL PROTECTED]> wrote in message
> news:40108@palm-dev-forum...
> >
> >
> > > I think so.
> > > Here is the code (snippet)
> > > ===============
> > > case AddNoteDoneButton: //Save the data and leave the form
> > > frm = FrmGetActiveForm();
> > > wIDField=FrmGetObjectIndex(frm,AddNoteNoteField);
> > > pCtlField=(FieldPtr) FrmGetObjectPtr(frm,wIDField);
> > > FldCompactText(pCtlField);
> > > textLen=FldGetTextLength(pCtlField);
> > > if (FldGetTextLength(pCtlField)>0) // We can add a note since we have
> > > something
> > > {
> > > hText=FldGetTextHandle(pCtlField);
> > > FldSetTextHandle(pCtlField,NULL);
> > > pText=(CharPtr)MemHandleLock(hText);
> > > addNote(pText,ADD_NOTE_NOTE );//inserts note into database
> > > MemHandleUnlock(hText);
> >
> > depending on the provenance of hText, you might need
> > MemHandleFree(hText);
> >
> > > // FldFreeMemory( pCtlField );
> > > }
> > > FrmGotoForm(PalmLinkPatientNotesForm);
> > > handled=true;
> > > break;
> > > ==================
> > >
> > > Originally I did not have the line
> > > FldSetTextHandle(pCtlField,NULL);
> > > and adding the line:
> > > FldFreeMemory( pCtlField );
> > > would cause it to crash which is why it is commented out.
> > >
> > > In this example I only have one text field on the whole form. (so it
is
> > the
> > > simplest case)
> > > Thanks,
> > > Jim
> > >
> > > --
> > > Our new email address is [EMAIL PROTECTED]
> > > .
> > > "Philip Sheard" <[EMAIL PROTECTED]> wrote in message
> > > news:40070@palm-dev-forum...
> > > >
> > > >
> > > > > I have a form where some editing occurs. When the user presses
the
> OK
> > > > > button the values are collected off the screen and saved in a
> > database.
> > > > > Then a gotoForm is called and when this form comes up it crases in
> the
> > > > forms
> > > > > open event. In that event I have a variety of functions getting
> > called.
> > > > If
> > > > > I rearrange these functions It will crash in a different place.
> > >
> > > > >
> > > > > I am using global variables. Am I over running my stack? It
seems
> to
> > > me
> > > > > that the functions are doing the correct things (because if I put
> the
> > > > order
> > > > > of execution differently the program does not crash in the same
> spot).
> > > I
> > > > am
> > > > > a little confused as to how the use of global variables affects my
> > stack
> > > > > size if any. Does it?
> > > >
> > > > The error lies in the form being closed. Have you freed all the text
> > > > handles?
> > > >
> > > >
> > > >
> > >
> > >
> > >
> > > --
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> > please see http://www.palmos.com/dev/tech/support/forums/
> > >
> >
> >
> >
>
>
>
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