Glutin colormap

gistfile1.diff

diff --git a/src/x11/window/mod.rs b/src/x11/window/mod.rs
index 0c3700b..a14eeff 100644
--- a/src/x11/window/mod.rs
+++ b/src/x11/window/mod.rs
@@ -421,10 +421,18 @@ impl Window {
             builder.parent as ffi::Window
         };
 
+        // creating the color map
+        let cmap = unsafe {
+            let cmap = ffi::XCreateColormap(display, parent,
+                visual_infos.visual as *mut _, ffi::AllocNone);
+            // TODO: error checking?
+            cmap
+        };
+
         // creating
         let mut set_win_attr = {
             let mut swa: ffi::XSetWindowAttributes = unsafe { mem::zeroed() };
-            swa.colormap = 0;
+            swa.colormap = cmap;
             swa.event_mask = ffi::ExposureMask | ffi::StructureNotifyMask |
                 ffi::VisibilityChangeMask | ffi::KeyPressMask | ffi::PointerMotionMask |
                 ffi::KeyReleaseMask | ffi::ButtonPressMask |