HM_REPLACE_USING_HELP - Syntax

This message tells the Help Manager to display the application-defined Using help window instead of the Help Manager Using help window.

param1
    USHORT  idUsingHelpPanel

param2
    ULONG   ulReserved        /*  Reserved value, should be 0. */

returns
    ULONG   ulReserved        /*  Reserved value, should be 0. */