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Gets or sets whether lines are drawn inside the specified shape's boundaries.
This property indicates whether the line is rendered within the shape outline instead of being centered on the shape boundary.
bool InsetPen { get; set; }
Property InsetPen As Boolean
IShape connector = worksheet.Shapes.AddConnector(ConnectorType.Straight, 10, 10, 200, 100);
ILineFormat line = connector.Line;
line.InsetPen = true;
bool insetPen = line.InsetPen;