From 8194f1e2ae72715efbcc03de34c9a8e5bd8e8de5 Mon Sep 17 00:00:00 2001
From: Camilla Berglund <elmindreda@elmindreda.org>
Date: Fri, 4 Oct 2013 13:41:19 +0200
Subject: [PATCH] Added hack for setting WM_CLASS.

---
 README.md        |  1 +
 src/x11_window.c | 13 +++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/README.md b/README.md
index df7b45b6..eb666b7a 100644
--- a/README.md
+++ b/README.md
@@ -212,6 +212,7 @@ See the [GLFW documentation](http://www.glfw.org/docs/latest/).
                    been flipped
  - [Cocoa] Bugfix: The `GLFW_KEY_F13` key was reported as
                    `GLFW_KEY_PRINT_SCREEN`
+ - [X11] Added setting of the `WM_CLASS` property to the initial window title
 
 
 ## Contact
diff --git a/src/x11_window.c b/src/x11_window.c
index f0e872e4..f7f172e6 100644
--- a/src/x11_window.c
+++ b/src/x11_window.c
@@ -268,6 +268,19 @@ static GLboolean createWindow(_GLFWwindow* window,
         XFree(hints);
     }
 
+    // Set ICCCM WM_CLASS property
+    // HACK: Until a mechanism for specifying the application name is added, the
+    // initial window title is used as the window class name
+    if (strlen(wndconfig->title))
+    {
+        XClassHint* hint = XAllocClassHint();
+        hint->res_name = (char*) wndconfig->title;
+        hint->res_class = (char*) wndconfig->title;
+
+        XSetClassHint(_glfw.x11.display, window->x11.handle, hint);
+        XFree(hint);
+    }
+
     if (_glfw.x11.xi.available)
     {
         // Select for XInput2 events