C / C++ / MFC

Hello all
Are you concerntating?
Yes, good. I am wondering it anyone knows the answer to
this topic or can point me in the right direction.

I'll elaborate upon my query. Thus any replies I get
(hopefully), will be answeredin the correct context.

Below are is a sample three controls.

1. A standalone control (Demo control 1)
   
2. Another standalone control (Demo control 2)
   
   
3. A meta control which has its own features as well as
   containing controls (1 & 2 above)

When I build the first two, they both build and register successfully. I can
use either (or both) on other projects as child windows. i.e. VC dialogues, VB
forms, Delphi Forms. Web pages ect. with no problems.

There seems to be a problem when ActiveX control is a parent.

The nature of my
query is this: how can achieve no3 (meta control) Without
it causing crashes when I insert it into other projects (or the test
container)

• I've designed a control for called CMetaCtrrl via
  AppWizard
  
• Inserted both Demo1 and Demo2 ActiveX controls into the project with their
  wrapper classes generated
  
• Added a member 'variables' to both
  
• Inserted the handler WM_CREATE (that's what you have to do if you're using
  child windows)
  
• Inside the function OnCreate. I've added code to allow creation of the children windows
  

  CRect rcInit(CPoint(0), CPoint(0));
  m_demo1.CreateControl(m_demo1.GetClsid(), "", WS_CHILD | WS_VISIBLE,
      rcInit, this, 1001);
  m_demo2.CreateControl(m_demo2.GetClsid(), "", WS_CHILD | WS_VISIBLE,
      rcInit, this, 1002);
  

  
  
• Added code to position and make Demo controls 1 &
  2 visible
  
• Built the project (Which it does successfully) also
  favourably accomplished is the registration of the control.

That done I test newly created control. It's when I insert that's when the
troubles start. When using the test container it raises an execption, or on
placement of the control on a form (or dialogue) the same things happens.
In addition to that it brings down whatever development tool I'm using. The
problem is occurring when an attempt is made to create the first chold
window.

On debugging I've stepped into m_demo1.CreateControl().

Which leads me to step into

AFX_MODULE_STATE* AFXAPI <br />
AfxGetModuleState()

(m_pCtrlCont = <br />
afxOccManager->CreateContainer(this); ) 

<CODE>
	TRY
	{
		if (m_pCtrlCont == NULL)
			m_pCtrlCont = afxOccManager->CreateContainer(this);
	}
	END_TRY

</CODE>

LPCTSTR intList[] = {"one","two","three",};	<br />
HWND hList;<br />
hList = GetDlgItem(IDC_COMBO1);<br />
for (int i = 0; i < 3; i++) <br />
  { <br />
      SendMessage(hList, LB_ADDSTRING, 0, (LPARAM)"hello"); <br />
  }