| Value | Meaning |
|---|---|
| NORTH_WEST1 | the reference point is at the top left corner. |
| NORTH2 | the reference point is in the middle of the top edge. |
| NORTH_EAST3 | the reference point is at the top right corner. |
| WEST4 | the reference point is at the middle of the left edge. |
| CENTER5 | the reference point is at the center of the surface. |
| EAST6 | the reference point is at the middle of the right edge. |
| SOUTH_WEST7 | the reference point is at the lower left corner. |
| SOUTH8 | the reference point is at the middle of the lower edge. |
| SOUTH_EAST9 | the reference point is at the lower right corner. |
| STATIC10 | the reference point is at the top left corner of the surface itself, ignoring window manager decorations. |
Defines the reference point of a surface and is used in #GdkPopupLayout.