什么原因造成的啊？好郁闷！

#include "StdAfx.h"

#include "HtmlCtrl.h"



#ifdef _DEBUG

#define new DEBUG_NEW

#undef THIS_FILE

static char THIS_FILE[] = __FILE__;

#endif



IMPLEMENT_DYNAMIC(CHtmlCtrl, CHtmlView)

BEGIN_MESSAGE_MAP(CHtmlCtrl, CHtmlView)

	ON_WM_DESTROY()

	ON_WM_MOUSEACTIVATE()

END_MESSAGE_MAP()



//////////////////////////////////////////////////////////////////////////

// Create control in same position as an existing static control with

// the same ID (could be any kind of control, really)

//

BOOL CHtmlCtrl::CreateFromStatic(UINT nID, CWnd* pParent)

{

	CStatic wndStatic;

	if (!wndStatic.SubclassDlgItem(nID, pParent))

		return FALSE;



	// Get static control rect, convert to parent's client coords.

	CRect rc;

	wndStatic.GetWindowRect(&rc);

	pParent->ScreenToClient(&rc);

	wndStatic.DestroyWindow();



	// create HTML control (CHtmlView)

	



	return Create(NULL,						 // class name

		NULL,										 // title

		(WS_CHILD | WS_VISIBLE ),			 // style

		rc,										 // rectangle

		pParent,									 // parent

		nID,										 // control ID

		NULL);	                                    // frame/doc context not used

		

}



////////////////

// Override to avoid CView stuff that assumes a frame.

//

void CHtmlCtrl::OnDestroy()

{

	// This is probably unecessary since ~CHtmlView does it, but

	// safer to mimic CHtmlView::OnDestroy.

	if (m_pBrowserApp) {

		m_pBrowserApp->Release();

		m_pBrowserApp = NULL;

	}

	CWnd::OnDestroy(); // bypass CView doc/frame stuff

}



////////////////

// Override to avoid CView stuff that assumes a frame.

//



int CHtmlCtrl::OnMouseActivate(CWnd* pDesktopWnd, UINT nHitTest, UINT msg)

{

	// bypass CView doc/frame stuff

	return CWnd::OnMouseActivate(pDesktopWnd, nHitTest, msg);

}