ArcObjects Library Reference (Display)  

esriLineJoinStyle Constants

Line symbol join styles.

Constant Value Description
esriLJSMitre 0 Line joins are mitred.
esriLJSRound 1 Line joins are round.
esriLJSBevel 2 Line joins are beveled.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.