| Value | Meaning |
|---|---|
| NONE0 | No visible border |
| SOLID1 | A single line segment |
| INSET2 | Looks as if the content is sunken into the canvas |
| OUTSET3 | Looks as if the content is coming out of the canvas |
| HIDDEN4 | Same as GTK_BORDER_STYLE_NONE |
| DOTTED5 | A series of round dots |
| DASHED6 | A series of square-ended dashes |
| DOUBLE7 | Two parallel lines with some space between them |
| GROOVE8 | Looks as if it were carved in the canvas |
| RIDGE9 | Looks as if it were coming out of the canvas |
Describes how the border of a UI element should be rendered.