Re: How to display a Word document in form?

Where have all the gurus gone?

Come & help please!

Nick

"Nick" <aroughguy_at_nsp.toughguy.net> wrote in message news:pLcp9.14118$Sr6.449691_at_ozemail.com.au...
> Adding a delay didn't work
> Nick
>
>
> "Billy Verreynne" <vslabs_at_onwe.co.za> wrote in message
> news:ao17dc$c9f$1_at_ctb-nnrp2.saix.net...
> > Nick wrote:
> >
> > > ole_item := FIND_ITEM('main_block.help_doc');
> > > IF NOT ID_NULL(ole_item)
> > > THEN
> > > Forms_OLE.Initialize_Container(ole_item, 'C:\help.doc');
> > > END IF;
> > >
> > > IF Forms_OLE.Server_Active(ole_item) = FALSE
> > > THEN
> > > Forms_OLE.Activate_Server(ole_item);
> > > END IF;
> > >
> > > But I got FRM-41344: OLE object not defined for help_doc in the urrent
> > > record
> > > Damn it , What's wrong? I obviously initialized the OLE object!
> >
> > Try Michael suggestion in adding a delay.
> >
> > But I'm not sure that that Michael diagnosed the error he got correctly.
> > The Win32 CoCreateInstance() API call used to create an OLE object is a
> > blocking call. It will only return the object's pointer/reference to
you
> > _after_ it has been constructed. Assuming that the call succeeded, you
> will
> > have a constructed object, a valid reference, and are able to call
methods
> > of that object. Unless of course Forms deal with this differently...
> >
> > Anyway, what I think could be the problem (keeping in mind that I know
> > _nothing_ about the Forms language).
> >
> > You say:
> > IF NOT ID_NULL(ole_item)
> >
> > There are two "null" states when dealing with variant objects. Empty and
> > Null.
> >
> > Empty means that the variant is unsassigned.
> >
> > Null means that the variant is (obviously) null.
> >
> > When you do a FIND_ITEM(), what does it return when it fails? An
> unassigned
> > variant or a null variant?
> >
> > A IS_VARIANT_NULL( variant ) will return false for an unassigned
variant -
> > mistakenly letting you believe that you do have a constructed object. I
> had
> > a similar problem when dealing with a speech recognition object that
> > returns an empty (and not null) interface to the recognised speech's Ole
> > property object when there are no properties defined in the grammer rule
> > for that speech phrase.
> >
> > Unassigned and Null are defined as hex values $0000 and $0001
respectively
> > in the Pascal (Delphi) header files for dealing with OLE objects.
> >
> > --
> > Billy
>
>
Received on Fri Oct 11 2002 - 06:38:54 CDT