The problem that jumps out at me is that "trigger" should be of type
"ControlPtr", not "ListPtr".
Since the two structures are different, this may be causing your error.
Zoltan
> -----Original Message-----
> From: Chris Yourch [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, December 14, 1999 5:31 PM
> To: [EMAIL PROTECTED]
> Subject: LstNewList
>
>
>
> Hi,
>
> I am just getting started with the palm OS and am having some trouble
> dynamically creating a list control that is connected to a popup trigger.
>
> I used constructor to add a popup trigger to a form and I then dynamically
> create a list that I connect to the popup trigger. I am getting the error
> message "... just read directly from an unallocated chunk of memory". See
> below for the code I am using.
>
> Thanks,
> Chris
>
> -------------------------------------------------------
>
> FormPtr m_pForm;
> VoidHand m_hStrings;
> Word eCredentialID = 101;
>
> void CContactForm::OnOpenForm()
> {
> ListPtr trigger =
> (ListPtr)GetObjectPtr(ContactIdentificationCredentialPopTrigger);
>
> Word visibleItems = 3;
> Err ret = LstNewList(&m_pForm, eCredentialID,
> trigger->bounds.topLeft.x,
> trigger->bounds.topLeft.y,
> trigger->bounds.extent.x,
> trigger->bounds.extent.y,
> stdFont, visibleItems,
> ContactIdentificationCredentialPopTrigger);
> ListPtr list = (ListPtr)GetObjectPtr(eCredentialID);
> CtlSetUsable((ControlPtr)list, false);
>
> CharPtr pStrings = "PA\0MD\0RNP\0ME\0RN\0";
> Word nStrCnt = 5;
> m_hStrings = SysFormPointerArrayToStrings(pStrings, nStrCnt);
> char **p = (char **)MemHandleLock(m_hStrings);
> LstSetListChoices(list, p, nStrCnt);
> }
>
> void CContactForm::OnCloseForm()
> {
> ListPtr list = (ListPtr)GetObjectPtr(eCredentialID);
> LstSetListChoices(list, NULL, 0);
> MemHandleUnlock(m_hStrings);
> MemHandleFree(m_hStrings);
> m_hStrings = NULL;
> }
>
>
>
>
