id (USHORT)

      Window identifier.

      The window identifier of the value set control sending this notification message.

    powneritem (POWNERITEM)

      Pointer to an OWNERITEM data structure.

      The following list defines the OWNERITEM data structure fields that apply to the value set control. See OWNERITEM for the default field values.

      hwnd (HWND)

        Value set window handle.
      hps (HPS)
        Presentation-space handle.
      fsState (ULONG)
        Value set window style flags. See Value Set Control Styles for descriptions of these style flags.
      fsAttribute (ULONG)
        Item attribute flags for the indexed item. See VM_SETITEMATTR for descriptions of these attribute flags.
      fsStateOld (ULONG)
        Reserved.
      fsAttributeOld (ULONG)
        Reserved.
      rclItem (RECTL)
        Item rectangle to be drawn in window coordinates.
      idItem (LONG)
        Identity of component to be drawn.

        VDA_BACKGROUND

          Specifies that a part of the value set background is to be drawn.
        VDA_SURROUNDING
          Specifies that a part of the area surrounding the value set is to be drawn.
        VDA_ITEMBACKGROUND
          Specifies that the background of an item is to be drawn.
        VDA_ITEM
          Specifies that an entire item is to be drawn.
        hItem (ULONG)
          If the value of the identity parameter is VDA_ITEMBACKGROUND or VDA_ITEM, this is the current row and column index of the item to be drawn. The low-order word contains the row index, and the high-order word contains the column index. Otherwise, this is reserved.

        rc (BOOL)

          Item-drawn indicator.

          TRUE

            The owner draws the component.
          FALSE
            If the owner does not draw the component, the owner returns this value and the value set control draws the component.

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