usContext (USHORT)

      Type of window on which help was requested.

      HLPM_WINDOW

        An application window
      HLPM_FRAME
        A frame window
      HLPM_MENU
        A menu window.

      sTopic (SHORT)

        Topic identifier.

        For a value of the usContext parameter of HLPM_WINDOW or HLPM_FRAME:

        window

          Identity of the window containing the field on which help was requested.
        menu
          Identity of the submenu containing the field on which help was requested.

        sSubTopic (SHORT)

          Subtopic identifier.

          For a value of the usContext parameter of HLPM_WINDOW or HLPM_FRAME:

          control

            Control identity of the cursored field and on which help was requested.
          For a value of the usContext parameter of HLPM_MENU:

        • No menu item was selected

          other

            Menu item identity of the currently selected submenu item on which help was requested.

          rc (BOOL)

            Action indicator.

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