HM_EXT_HELP_UNDEFINED

This message is sent to the application by the Help Manager to notify it that an extended help window has not been defined.

param1
    ULONG  ulReserved  /*  Reserved value, should be 0. */

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

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

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