set_anchor_hints
Description:
Set new anchor hints.
The set anchor_hints determines how surface will be moved if the anchor points cause it to move off-screen. For
example, gdk_anchor_flip_x will replace gdk_gravity_north_west with
gdk_gravity_north_east and vice versa if surface extends beyond the left or right edges of the
monitor.
Parameters:
| this |
a `GdkPopupLayout` |
| anchor_hints |
the new `GdkAnchorHints` |