[Lazarus] VirtualTreeView question, horizontal jump

[Jürgen Hestermann]

Am 2013-08-21 11:16, schrieb Jürgen Hestermann:
> Why does a normal move down shift the whole tree horizontally to the right margin each second move (slider is at max right position) and back to the left again?
>

I now found that "toDisableAutoscrollOnFocus" (under "AutoOptions") is changing between these both behaviours:

If I set it to TRUE I can navigate as usual within the tree (without horizontal shifting) *but* when reaching the bottom border of the window the cursor disappears below it without shifting up the tree display. So I don't see my cursor anymore (which is totally useless).
If I set it to FALSE the tree display is shifted up when reaching the bottom of the display *but* now it jumps to the right border every second down move (so that I don't see the tree anymore, only when shifting it back with Ctrl+Enter).

I don't know how to achive both: Shifting up the tree when reaching the bottom end *and* staying at the left border all the time.