Scrolls the tree view such that the top-left corner of the visible
area is tree_x, tree_y, where tree_x and tree_y are specified
in tree coordinates. The tree_view must be realized before
this function is called. If it isn't, you probably want to be
using TreeView.scrollToCell.
If either tree_x or tree_y are -1, then that direction isn’t scrolled.
Scrolls the tree view such that the top-left corner of the visible area is tree_x, tree_y, where tree_x and tree_y are specified in tree coordinates. The tree_view must be realized before this function is called. If it isn't, you probably want to be using TreeView.scrollToCell.
If either tree_x or tree_y are -1, then that direction isn’t scrolled.