How can I eliminate the lines in TreeView while keeping all arrows

问题

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 :

回答1:

Try this:

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

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

来源：https://stackoverflow.com/questions/38836627/how-can-i-eliminate-the-lines-in-treeview-while-keeping-all-arrows