Defines the graphic displayed in the item's row header. The refPictureObj
object must represent a bitmap, icon or Windows metafile. If a
bitmap is used, the top, left pixel of each graphic must contain the
background color. This color will be replaced by the actual
background when the graphic is displayed. For information about
picture properties, please visit the applicable section "Using
SftTree/OCX with ...".
The RowPicture property defines the graphic displayed in the item's row header.
The VirtualItem.RowPicture property is used while handling a VirtualItem event to define the item's row header graphic. The item is
described by the VirtualItem event's
RowIndex parameter.