GetObject is getting a pointer to the specified object and is unaware of
what type of object it is. That is why it returns a void*. As the
programmer, you need to know which type of object it points to and use/cast
it appropriately. For example, in this case, ContactDetailFirstNameField
happens to be a field on the Form. Therefore, getObject will return a
FieldPtr. You might also use getObject on a table object and, in that case,
it would return a TablePtr.
//Ray
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Rochester,
Dean
Sent: Monday, February 05, 2001 7:33 AM
To: Palm Developer Forum
Subject: VoidPtr and FieldPtr Confusion
Hi
I am working through
Palm OS Programming from the Ground Up
and have run into a confusing situation.
In one example there is a function
static void setText(FieldPtr, CharPtr);
In the call for this function the FieldPtr parameter is supplied as
follows...
setText(getObject(form, ContactDetailFirstNameField), precord +
DB_FIRST_NAME_START);
in this setText call...
getObject returns a VoidPtr
Is a VoidPtr and a FieldPtr the same thing?
Thanks in advance
--
For information on using the Palm Developer Forums, or to unsubscribe,
please see http://www.palmos.com/dev/tech/support/forums/
--
For information on using the Palm Developer Forums, or to unsubscribe, please see
http://www.palmos.com/dev/tech/support/forums/
