Hello Everybody

I use a treeview control to show structured data.
I call a popupmenu at right click on a node (mouseup event if button = 2) to offer some special actions
But:
At right click the selected treeview node also is expanded or collapsed??
I want the following behavior:
expand or collapse a node only at left click (better only when clicking the + box)
no expanding or collapsing at right click (only showing my popupmenu)

How to code this ???

Any help welcomed
Best regards
Albert