Brew MP 1.0.2
This data type supplies the necessary information for the EVT_WDG_TRAVERSE
event, which is used to walk the container tree
pfnVisit: Pointer to a callback function to execute on each widget.
pvVisit: Callback function context pointer.
wDepth: The number of levels to descend on traversal. Use value 0
to descend into the maximum depth of the tree.
wReserved: This member is reserved for use by the EVT_WDG_TRAVERSE event.