CTree + GdkEvent

["Jerome COUDERC" <couderj agf fr>]

Hi,

I'm using a Ctree widget ant want to do an action1 when selecting a row, and
do an action2 when double clicking over this same row.

When double-clicking, it sends the GDK_2BUTTON_PRESS event but also
generates before the GDK_BUTTON_PRESS event ...

How can I associate functions to signals to do only "action2" when
double-clicking, and not "action1" + "action2"?

Thanks in advance,
Jerome