Subject: [PATCH] X11: Added support to _NET_WM_PID and WM_CLIENT_MACHINE atoms
Date: Tue, 28 Jun 2011 22:27:13 +0200
From: Marco Trevisan (Treviño) <mail@3v1n0.net>

# HG changeset patch
# User Marco Trevisan (Treviño) <mail@3v1n0.net>
# Date 1309292807 -7200
# Branch SDL-1.2
# Node ID aa87bdcb6f5b3fdc83fbceda566705457fbcc2d1
# Parent  80ae1ac3bdc9cbcc2932b6cfcfc322320f0d819d
X11: Added support to _NET_WM_PID and WM_CLIENT_MACHINE atoms

Add support to the _NET_WM_PID atom which is needed by many windows
managers to correctly associate a SDL window to its process and to
related .desktop file and icon for the given host.

diff -r 80ae1ac3bdc9 -r aa87bdcb6f5b src/video/x11/SDL_x11video.c
--- a/src/video/x11/SDL_x11video.c	Sat Jun 04 15:34:32 2011 -0400
+++ b/src/video/x11/SDL_x11video.c	Tue Jun 28 22:26:47 2011 +0200
@@ -417,6 +417,25 @@
 	}
     }
 
+	{
+		char hostname[256];
+
+		if (gethostname(hostname, sizeof(hostname)) > -1) {
+			hostname[sizeof(hostname)-1] = '\0';
+			pid_t pid = getpid();
+
+			if (pid > 0) {
+				Atom _NET_WM_PID = XInternAtom(SDL_Display, "_NET_WM_PID", False);
+				Atom WM_CLIENT_MACHINE = XInternAtom(SDL_Display, "WM_CLIENT_MACHINE", False);
+				
+				XChangeProperty(SDL_Display, WMwindow, _NET_WM_PID, XA_CARDINAL, 32,
+				                PropModeReplace, (unsigned char *)&pid, 1);
+				XChangeProperty(SDL_Display, WMwindow, WM_CLIENT_MACHINE, XA_STRING, 8,
+				                PropModeReplace, hostname, SDL_strlen(hostname));
+			}
+		}
+	}
+
 	/* Setup the communication with the IM server */
 	/* create_aux_windows may be called several times against the same
 	   Display.  We should reuse the SDL_IM if one has been opened for