Increase the size of the label shape to the left and right of the text. LabelVertMargin is a percentage value (of the label size), so 0.10, sets 10% of the top and bottom as spacing.
Note: LabelVertMargin has no effect if the label shape is not visible.
// Set label shape to circular with 10% spacing on all sides (i.e. making ellipse taller and wider) TIELineLayer( ImageEnView1.CurrentLayer ).LabelShape := iesEllipse; TIELineLayer( ImageEnView1.CurrentLayer ).LabelHorzMargin := 0.10; TIELineLayer( ImageEnView1.CurrentLayer ).LabelVertMargin := 0.10; ImageEnView1.Update();