Determines how the joins between segments of a polygon are drawn.
Value | Symbolic name | Description |
| 0 | Gdk::JOIN_MITER | The sides of each line are extended to meet at an angle. |
| 1 | Gdk::JOIN_ROUND | The sides of the two lines are joined by a circular arc. |
| 2 | Gdk::JOIN_BEVEL | The sides of the two lines are joined by a straight line which makes an equal angle with each line. |