| Value | Meaning |
|---|---|
| None0 | No attribute, used for constant relations |
| Left1 | The left edge of a widget, regardless of text direction |
| Right2 | The right edge of a widget, regardless of text direction |
| Top3 | The top edge of a widget |
| Bottom4 | The bottom edge of a widget |
| Start5 | The leading edge of a widget, depending on text direction; equivalent to gtk.types.ConstraintAttribute.Left for LTR languages, and gtk.types.ConstraintAttribute.Right for RTL ones |
| End6 | The trailing edge of a widget, depending on text direction; equivalent to gtk.types.ConstraintAttribute.Right for LTR languages, and gtk.types.ConstraintAttribute.Left for RTL ones |
| Width7 | The width of a widget |
| Height8 | The height of a widget |
| CenterX9 | The center of a widget, on the horizontal axis |
| CenterY10 | The center of a widget, on the vertical axis |
| Baseline11 | The baseline of a widget |
The widget attributes that can be used when creating a class@Constraint.