Hello

I am writing a COM object(component) in C#. There is an interface(called
IBatchConfig)  I should implement in this COM object. In particular, this
method of the interface:

public void Configure(int hWnd, object pTaskTopic, object pConfigTopic)

which brings up a modal dialog of this component.

My goal is to call Configure method of another COM object (component) in my
Configure method.

Let's say the name of my componet is MyCSharpComp, and C# implementaion of
this method looks lile this:

public class MyCSharpComp : IBatchConfig
{
   public void Configure(int hWnd, object pTaskTopic, object pConfigTopic)
       {
           .....
           //creating an instanse of COM object "comp"
           Type compType = Type.GetTypeFromProgID(compProgID);
           IBatchConfig comp =
(IBatchConfig)Activator.CreateInstance(compType);

           //passing it to ConfigForm constructor
           ConfigForm cf = new ConfigForm(IBatchConfig comp,......);
           if (cf.ShowDialog() == DialogResult.OK)
           {
            ......
            }
        }
}
public partial class ConfigForm : Form
   {
   
         IBatchConfig comp;
         public ConfigForm ( IBatchConfig pComp, .....)
         {
              ....
              comp = pComp;
              ....
         }        

         private void SomeMethod(...)
         {
                .....
                //this method should bring up a config dialog of another
COM object "comp"
                comp.Configure(Handle.ToInt32(), taskBase, cfgBase);
                .....
         }
   }

most of other COM objects is written in C++ and theirs implementation of
Configure method looks like this:
STDMETHODIMP CFTC::Configure(LONG hWnd, IDispatch * pTaskTopic, IDispatch *
pConfigTopic)
{
    AFX_MANAGE_STATE(AfxGetStaticModuleState())
    HRESULT rc = S_OK;
   
    CFTCCfgDlg CfgDlg(CWnd::FromHandle((HWND)hWnd ) );

    if( ( rc = CfgDlg.Init( pTaskTopic, pConfigTopic ) ) == S_OK )
    {
        CfgDlg.DoModal();
       
    }
    return rc;
}

When C# component calls c# component everything is ok.
when c++ calls c++, also everything is ok
when c++ calls c# everything looks fine
but when C# component calls c++
it brings up a dialog but the first mose click seems to do nothing wherever
you click and you should click once again to press button or to do something
else. This first click can be made anywhere inside or outside the dialog.  
The dialog seems to own the focus, and keyboard input works fine.

Is there any idea what is going on here, and how can I work around this
problem?
I will appreciate any ideas.

Sergey