HM_REPLACE_HELP_FOR_HELP - Syntax

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

param1
     USHORT  idHelpForHelpPanel  /*  Identity of the application-defined Help for Help window. */

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