RE: LuaCOM - more questions

[Ignacio Burgueño <ignacio@...>]

Well. I compiled a debug version of luacom 1.3 (as of 2005-02-28) and it
does not work.
Indeed, the code fails when calling the Add method from the Word.Document
class
Its signature is:

HRESULT Add( 
	[in, optional] VARIANT* Template,
	[in, optional] VARIANT* NewTemplate, 
      [in, optional] VARIANT* DocumentType, 
      [in, optional] VARIANT* Visible, 
      [out, retval] Document** prop);

I don't know if luacom 1.3 introduced a new approach to handle optional
parameters, but I think that the problem lies in the function
tLuaCOMTypeHandler::fillDispParams 
At line 943, there's this code:
	
	else if(!byref) // here we filter the optional out params (treated
below)
      {
        // assumes that a parameter is expected but has not been found

        var.vt = VT_ERROR;
        var.scode = DISP_E_PARAMNOTFOUND;
      }

      if(!byref || var.vt == VT_ERROR)
      {
        VariantCopy(&r_rgvarg[i], &var);
        VariantClear(&var);
      }

byref is true (it was set at line 911), and the parameter is [in] but it
seems that that case isn't handled properly. It should pass a Variant with
VT_ERROR and DISP_E_PARAMNOTFOUND.
I'm not quite sure of how to fix this properly. 
Changing line 943 to this works fine:
	else if(byref) // here we filter the optional out params (treated
below) 
But I didn't check if that breaks other calls.

Regards,

Ignacio Burgueño
Desarrollo - Tecnolink S.A.
ignacio@tecnolink.com.uy 

Tel: +598 2 614-1003
www.inConcertCC.com 
 

> -----Original Message-----
> From: lua-bounces@bazar2.conectiva.com.br 
> [mailto:lua-bounces@bazar2.conectiva.com.br] On Behalf Of Terry Bayne
> Sent: Tuesday, January 31, 2006 2:45 PM
> To: Lua list
> Subject: RE: LuaCOM - more questions
> 
> Ignacio, 
> 
> Hi, thank you for taking the time to look at this.  I am 
> using LUACom 1.3 with Office 2003 and LUA 5.0.2.
> 
> Terry
> 
> On Tue, 31 Jan 2006 15:12:24 -0300, Ignacio Burgueño wrote:
> >> Hi Terry. What version of LuaCOM are you using? Just tested your
> >> sample code using luaCom 1.2 and Office 2003 and it worked fine.
> >>
> >>
> >>>> -----Original Message-----
> >>>> From: lua-bounces@bazar2.conectiva.com.br
> >>>> [mailto:lua-bounces@bazar2.conectiva.com.br] On Behalf Of Terry
> >>>> Bayne Sent: Tuesday, January 31, 2006 1:15 PM To: Lua list
> >>>> Subject: Re: LuaCOM - more questions
> >>>>
> >>>> Fabio,
> >>>>
> >>>> Thanks for spotting that, but still getting a type mismatch
> >>>> error:
> >>>>
> >>>> LUA: Calling word.Documents:Add
> >>>> Error executing lua code: [COM
> >>>> error:(E:\Blackdog\kibble\trunk\luacom\src\library\tLuaCOM.cpp
> >>>> ,403):Type mismatch.]
> >>>>
> >>>> Here is the lua code I am running:
> >>>>
> >>>> word = luacom.CreateObject("Word.Application")
> >>>> MT = luacom.CreateObject("type.missing")
> >>>> assert(word)word.visible = true
> >>>> print("Calling word.Documents:Add")
> >>>> doc = word.Documents:Add()
> >>>> print("Back from Documents:Add()")
> >>>>
> >>>> Any ideas?
> >>>>
> >>>> Also I have tried passing MT to the Add() call like so:
> >>>>
> >>>> doc = word.Documents:Add(MT,MT,MT,MT)
> >>>>
> >>>> Thanks
> 
> 
> 
>