Excel automation: document properties

[Popovic.Sasa]

Hello everyone,

I need to do a simple task but I'm stuck with one problem.
I need to open Microsoft Excel and read it's custom document properties
from C++ (MFC). I was able to connect ot Excel and read a lot of things
(like Names, values in cells etc...) but I can't read custom document
properties. Here is the code I use:

CWorkbook xlBook;
LPDISPATCH lpDisp = NULL;
CCustomProperties properties;

lpDisp = m_ExcelApplication.get_ActiveWorkbook();
ASSERT(lpDisp);
xlBook.AttachDispatch(lpDisp);

lpDisp = NULL;
lpDisp = xlBook.get_CustomDocumentProperties();
ASSERT(lpDisp);
properties.AttachDispatch(lpDisp);
long count = properties.get_Count();

When I call "long count = properties.get_Count();" I receive exception
"member not found".
CWorkbok and CCustomProperties are classes that I generated from type
library using visual studio 2003.

Here is a code that works fine and reads all Names from Excel document:

CWorkbook xlBook;
LPDISPATCH lpDisp = NULL;
CNames names;

lpDisp = m_ExcelApplication.get_ActiveWorkbook();
ASSERT(lpDisp);
xlBook.AttachDispatch(lpDisp);

lpDisp = NULL;
lpDisp = xlBook.get_Names();
ASSERT(lpDisp);
names.AttachDispatch(lpDisp);

I would appriciate any help.
Thanks in advance,
Sasa