| Value | Meaning |
|---|---|
| Center1 | center popup around anchor widget center |
| Below2 | place popup below anchor widget close to lower bound |
| Above16 | place popup below anchor widget close to lower bound |
| Right4 | place popup below anchor widget close to right bound (when no space enough, align near left bound) |
| Point8 | align to specified point |
| FitAnchorSize16 | if popup content size is less than anchor's size, increase it to anchor size |
popup alignment option flags