Brew MP 1.0.2
This data structure specifies the prototype of the function that will be
used by the List Container Model to get the widget that represents an item
of a certain type in a certain state. For a list of states see the
pvCtx : Pointer to user context.
nType: Type of the item.
nState: State of the item.
ppiwItem: Pointer to an IWidget pointer that will be returned by the
function, providing the widget that represents an item of
a certain type and state.