如何在保留所有箭头的同时消除TreeView中的线条

Question

I have a TreeView which I am skinning using the SetWindowsTheme() pinvoke, however I am unable to remove the tree lines that appear.

I do not wish to do 'Owner' drawn as I believe that would be the equivalent of taking an 18-wheeler truck to deliver one taco (overkill).

What is a clean, quick way to eliminate the Tree forks while keeping the expansion arrows. (I need to keep the arrows on the root nodes as well)

should look like :

Answer 1

Try this:

yourTreeView.ShowLines = false;
yourTreeView.ShowPlusMinus = true;

Not sure if this will show up as you wish under your theme, though.