Find the name of the window manager X

Question

How can I find the name of the starting window manager X from the program?

If I started another window manager when it is already running, an error occurs, so there should be a way to detect the first for another window manager.

How it works?

Answer 1

In the EWMH spec, a compatible window manager will set the _NET_SUPPORTING_WM_CHECKwindow identifier for the property in the root window.

_NET_SUPPORTING_WM_CHECK , , ICCCM2. , , , ICCCM2, . , , ICCCM2.0, .

( , , ) _NET_WM_NAME, .

Answer 2

wmctrl XWWH, EWMH/NetWM, :

$ wmctrl -m
Name: Compiz
...

, ( 2012):

• blackbox >= 0.70
• IceWM
• kwin ( WM KDE)
• metacity ( WM GNOME)
• openbox >= 3 ( WM Lubuntu)
• -
• fvwm >= 2.5
• pekwm
• >= 0.16.6
• xfce >= 4
• fluxbox >= 0.9.6
• >= 0.91
• Compiz
• wmfs

Answer 3

"", , , 100% , . "xlsatoms" "xprop" ( ), ( ) .