use MSComctl.ocx with ui it_ActiveX

Hi,

i have the reference interop.mscomctllib in my project

When i try to affect the clsid to my SAPbouiCOM ActiveX i have an error like this :

An exception not manage like type 'system.runtime.interopservices.comexception' is comming in mywinapp.Exe.

Exception of hresult : oxFFFFFFFF

the code is :

Dim ActiveX as SAPbouiCOM.ActiveX

.....

oItem = oForm.Items.Add("Axiud",SAPbouiCOM.boFormItemTypes.it_Active_X)

ActiveX = oItem.Specific

ActiveX.ClassID = "MsComCtllib.TreeCtrl.2" <=== Here is the message error and abort program !!

thanks