'宣言 Public Function SnapshotPointFromScreenPoint( _ ByVal pointInTextAreaCoordinates As Point _ ) As Infragistics.Documents.SnapshotPoint
public Infragistics.Documents.SnapshotPoint SnapshotPointFromScreenPoint( Point pointInTextAreaCoordinates )
注: 可視ラインがない場合、0、0 位置を表す Infragistics.Documents.SnapshotPoint が返ります。