1. Put the following menu into a resource script:

IDR_WHAT_IS_THIS_MENU     MENU    DISCARDABLE

BEGIN

    BEGIN

        POPUP "a"

        BEGIN

            MENUITEM "What's this?", ID_WHAT_IS_THIS

        END

    END

END

2. Add to your dialog a right-click handler (OnRButtonDown) with menu IDR_WHAT_IS_THIS_MENU. You need to store the point of the last click in some variable - for example

CPoint m_cLastRClickPoint;

 

and store here the client coordinates of the last right click.

3. Put the following code into your dialog class (or probably the parent class of all your dialogs):

BEGIN_MESSAGE_MAP(CMyDialog, CDialog)

    //{{AFX_MSG_MAP(CMyDialog)

    // whatever

    //}}

    ON_COMMAND(ID_WHAT_IS_THIS, OnWhatIsThis)

END_MESSAGE_MAP()

 

void CMyDialog::OnWhatIsThis()

{

    CWnd* pControl = ChildWindowFromPoint (m_cLastRClickPoint);

   

    // if the click wasn't on one of the controls - open help for dialog

    if (pControl == NULL || pControl->m_hWnd == m_hWnd)

        WinHelp (HID_BASE_RESOURCE + m_nIDHelp, HELP_CONTEXTPOPUP);

    else

        WinHelp (HID_BASE_CONTROL + pControl->GetDlgCtrlID(), HELP_CONTEXTPOPUP);

}

 

- and finally add the following lines to the makehelp.bat file:

 

echo. >>hlp\wr.hm

echo // Controls (IDC_*) >>hlp\wr.hm

makehm IDC_,HIDC_,0x50000 resource.h >>hlp\wr.hm

This wires everything to your help system.