GtkTreeView question

["Andrew E. Makeev" <andrew solvo ru>]

Hi,

We have created TreeView widget and made it's columns clickable and
reorderable.

The question - is it right that signal "clicked" on column header is
generated in both cases: click column header and start column header DnD
operation with left mouse button?

If there is nothing to fix, could you, please, explain how to determine
in signal "clicked" callback function what is really happened - just
click or DnD start?

thanks in advance,
-andrew