Intended to tab forward through the children capable of having focus,
starting at the left or top. This option appears not to work in the
versions of GTK+ used in PHP-GTK, and has been completely rewritten for
GTK 2.
1
GTK_DIR_TAB_BACKWARD
Intended to tab backward through the children with focus capability,
starting at the right or bottom. This option appears not to work in the
versions of GTK+ used in PHP-GTK, and has been completely rewritten for
GTK 2.
2
GTK_DIR_UP
Sets initial focus on the child nearest the bottom of the container.
3
GTK_DIR_DOWN
Sets initial focus on the child nearest the top of the container.
4
GTK_DIR_LEFT
Sets initial focus on the child nearest the right edge of the container.
5
GTK_DIR_RIGHT
Sets initial focus on the child nearest the left edge of the container.