BUG: GetWindowContextHelpId() returns 0 for ActiveX Controls

REFERENCES

Sample Code

   ...
   #include "resource.hm" // Make sure you include the .hm file
                          // generated by the resource editor.
                          // It includes the help ID's for the
                          // controls.
   ...

   BOOL CMyDialog::OnInitDialog()
   {
       CDialog::OnInitDialog();

       ...
       // Associate a help context id with the TestHelp control.
       // IDC_TESTHELP_CONTROL is the id of the TestHelp control and
       // HIDC_TESTHELP_CONTROL is its help context id defined in
       // resource.hm file.
       CWnd* control = GetDlgItem(IDC_TESTHELP_CONTROL);
       control->SetWindowContextHelpId(HIDC_TESTHELP_CONTROL);

       return TRUE;  // Return TRUE unless you set the focus to a control.
                     // EXCEPTION: OCX Property Pages should return FALSE.
   }

   void CMyDialog::MyFunction()
   {
       // Retrieve the help context id associated with the TestHelp
       // control.
       CWnd* control = GetDlgItem(IDC_TESTHELP_CONTROL);
       DWORD help_id = control->GetWindowContextHelpId();
       TRACE("Help ID for Control IDC_TESTHELP_CONTROL : %x\n", help_id);
       ...
   }