A way to get xserver version string?

[coin-op-console]

How can I fetch xserver version string in a clean format like: "1.9.0", and not cumbersome like Xorg -version output?

[primerib]

dpkg -l xserver-xorg-core |grep "^ii" |sed -n 's/.*:\([0-9.-]*\).*/\1/p'

[coin-op-console]

Hmm. I can't pipe it in C++ with popen(). Isn't there an easier way?

[mooninite]

For a C/C++ program, you should be able to use the "VendorRelease()" function from Xlib.

[coin-op-console]

Thanks a zillion times.

[coin-op-console]

#include <X11/Xlib.h>

QString xserverVersion;

xserverVersion = XVendorRelease( XOpenDisplay( 0 ) );

Without any compilation and runtime errors, it returns "P" as the version string. What am I doing wrong?

[mooninite]

Hm... You don't want a "QString" as XVendorRelease returns an int. Change xserverVersion to an int.

[AaronP]

Parsing that number is hard. You'll probably want to lift the code xdpyinfo uses to identify the server vendor and then parse the release version based on that.

http://cgit.freedesktop.org/xorg/app...c80c86499#n241

[coin-op-console]

Thanks AaronP. I was able to parse the number by piping: xdpyinfo | grep "X.Org version" with popen() and doing the casual QString scissor operations with Qt. My app displays the version perfectly now as in Nvidia settings.