Hi all

I have a C++ application using a formula one control which stores data. I have written a VB DLL to accept that formula one as an object and then manipulate the data in VB. When i do this, I am getting an error during execution of my c++ app. Note that I am not a professional C++ developer. I get this error message :

The object invoked has been disconnected from its clients

any body can help me how to go about doing this..

Thanks
Ramesh

Try these web sites:

MSDN Online KB Article - 194873

http://www.codeproject.com/com/vb_from_vc.asp

http://www.codeproject.com/dll/vbactivexwithvc.asp

Don't have much time lately, hope this helps.


Larry Asher

Thanks for the links. But my problem here though is unable to use the function in the dLL. I am able to talk to the VB DLL and use any simple function like adding numbers. But in VB i have a function of the following code ;

Public Function getFbook(Fbook As F1Book) As Variant
Dim i As Integer
For i = 1 To Fbook.NumSheets
     MsgBox Fbook.SheetName(i)
Next
End Function

c++ code
             HRESULT hr;
           hr=CoInitialize(0);

           //IF1Book *m_pIF1Book;
           _Class1Ptr ptr;

           ptr.CreateInstance(__uuidof(Class1));

          ptr->getFbook((IF1Book**)&m_hSS);

This piece of code compiles but while running it fails and gives an error like "The object invoked is disconnected from clienst"

Any help appreiciated