CrunchBang & Openbox: no reaction to laptop power button pressed

Question

I've just installed #! and I'm loving the customizable Openbox DE.

However, when I press the power button on my laptop, the system doesn't react.

For example, when I was using Debian & Gnome, and when I pressed the said button, Gnome displayed a dialog box asking me whether I want to shutdown etc.

The mentioned dialog box also appears when I go to menu->exit in Openbox.

Question: How can I bind the shutdown button to Openbox->exit?

Some info:

xev + shutdown button says:

KeymapNotify event, serial 46, synthetic NO, window 0x0,
    keys:  0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   
           0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   

Answer 1

Have you tried the oblogout application? https://launchpad.net/oblogout

Answer 2

I have installed Xfce and it works now.

Go to Settings > Power Manager and set those options to "Ask" or whatever you prefer.