js如何调用C++程序（程序有点大，有库）

void CAddGoogleMap_CHtmlView::OnBeforeNavigate2(LPCTSTR lpszURL, DWORD nFlags, LPCTSTR lpszTargetFrameName, CByteArray& baPostedData, LPCTSTR lpszHeaders, BOOL* pbCancel)

 {
     // TODO: Add your specialized code here and/or call the base class  CString strUrl = lpszURL;
  if(strUrl.Left(4) == _T("app:"))

 {  

 // cancel the common url navigate and call your c++ code here   
*pbCancel = TRUE;   
MessageBox("调用了C++函数", "来自对话框消息");   
// call other c++ function here or parse the argument in the strUrl   
}


 CHtmlView::OnBeforeNavigate2(lpszURL, nFlags, lpszTargetFrameName, baPostedData, lpszHeaders, pbCancel); }