diff --git a/lib/x11/corereqs.js b/lib/x11/corereqs.js
index b8d4fd0..ab3c5c6 100644
--- a/lib/x11/corereqs.js
+++ b/lib/x11/corereqs.js
@@ -224,6 +224,14 @@ module.exports = {
        }
    ],
 
+   SendEvent: [
+
+       function(destination, propagate, eventMask, eventRawData)
+       {
+           return [ 'CCSLLa', [25, propagate, 11, destination, eventMask, eventRawData] ];  
+       }
+   ],
+
    QueryPointer: [
        [ 'CxSL', [38, 2] ],
        function(buf) {
diff --git a/lib/x11/unpackstream.js b/lib/x11/unpackstream.js
index 77ee773..fd0f34b 100644
--- a/lib/x11/unpackstream.js
+++ b/lib/x11/unpackstream.js
@@ -208,7 +208,7 @@ UnpackStream.prototype.pstr = function(str)
 */
 
 // TODO: measure node 0.5+ buffer serialisers performance
-UnpackStream.prototype.pack = function(format, arguments)
+UnpackStream.prototype.pack = function(format, args)
 {
     var packetlength = 0;
  
@@ -220,9 +220,9 @@ UnpackStream.prototype.pack = function(format, arguments)
         {
             packetlength++;
         } else if (f == 'p') {
-            packetlength += xutil.padded_length(arguments[arg++].length);
+            packetlength += xutil.padded_length(args[arg++].length);
         } else if (f == 'a') {
-            packetlength += arguments[arg].length;
+            packetlength += args[arg].length;
             arg++;
         } else {
             // this is a fixed-length format, get length from argument_length table
@@ -242,25 +242,25 @@ UnpackStream.prototype.pack = function(format, arguments)
                 buf[offset++] = 0;
                 break;
             case 'C':
-                var n = arguments[arg++];
+                var n = args[arg++];
                 buf[offset++] = n;
                 break;
             case 's': // TODO: implement signed INT16!!!
             case 'S':
-                var n = arguments[arg++];
+                var n = args[arg++];
                 buf[offset++] = n & 0xff;
                 buf[offset++] = (n >> 8) & 0xff;
                 break;
             case 'l': // TODO: implement signed INT32!!!
             case 'L':
-                var n = arguments[arg++];
+                var n = args[arg++];
                 buf[offset++] = n & 0xff;
                 buf[offset++] = (n >> 8) & 0xff;
                 buf[offset++] = (n >> 16) & 0xff;
                 buf[offset++] = (n >> 24) & 0xff;
                 break;
             case 'a':  // string or buffer
-                var str = arguments[arg++];
+                var str = args[arg++];
                 if (Buffer.isBuffer(str))
                 {
                     str.copy(buf, offset);
@@ -272,7 +272,7 @@ UnpackStream.prototype.pack = function(format, arguments)
                 }
                 break;
             case 'p':  // padded string
-                var str = arguments[arg++];
+                var str = args[arg++];
                 var len = padded(str);
                 // TODO: buffer.write could be faster
                 var c = 0;
diff --git a/lib/x11/xcore.js b/lib/x11/xcore.js
index 25d77cd..648a83e 100644
--- a/lib/x11/xcore.js
+++ b/lib/x11/xcore.js
@@ -172,7 +172,7 @@ XClient.prototype.unpackEvent = function(type, seq, extra, code, raw)
     event.seq = seq;
 
     if (type == 2 || type == 4 || type == 5 || type == 6) { // motion event
-        var values = raw.unpack('LLLSSSSSC'); //TODO: should be LLLLsssssSC
+        var values = raw.unpack('LLLssssSC');
         //event.raw = values;
         // TODO: use unpackTo???
         event.time = extra;
@@ -212,8 +212,8 @@ XClient.prototype.expectReplyHeader = function()
     // TODO: BigReq!!!!
 
     var client = this;
-    client.pack_stream.unpack(
-       'CCSL', function(res) {
+    client.pack_stream.get( 8, function(headerBuf) {
+            var res = headerBuf.unpack('CCSL');
             var type = res[0];
             var seq_num = res[2];
 
@@ -252,6 +252,13 @@ XClient.prototype.expectReplyHeader = function()
                     var extra = res[3];
                     var code = res[1];
                     var ev = client.unpackEvent(type, seq_num, extra, code, buf);
+              
+                    // raw event 32-bytes packet (primarily for use in SendEvent);
+                    // TODO: Event::pack based on event parameters, inverse to unpackEvent
+                    ev.rawData = new Buffer(32);
+                    headerBuf.copy(ev.rawData);
+                    buf.copy(ev.rawData, 8);
+                    
                     client.emit('event', ev);
                     var ee = client.event_consumers[ev.wid];
                     if (ee) {
diff --git a/test/sendevent.js b/test/sendevent.js
new file mode 100644
index 0000000..3b6a257
--- /dev/null
+++ b/test/sendevent.js
@@ -0,0 +1,65 @@
+var x11 = require('../lib/x11');
+
+var xclient = x11.createClient();
+var Exposure = x11.eventMask.Exposure;
+var PointerMotion = x11.eventMask.PointerMotion;
+var pts = [];
+
+xclient.on('connect', function(display) {
+    var X = this;
+    var root = display.screen[0].root;
+    var white = display.screen[0].white_pixel;
+    var black = display.screen[0].black_pixel;
+
+    function createWindow()
+    {
+
+    var wid = X.AllocID();
+    X.CreateWindow(
+       wid, root, 
+       10, 10, 400, 300, 
+       1, 1, 0,
+       { 
+           backgroundPixel: white, eventMask: Exposure|PointerMotion  
+       }
+    );
+    X.MapWindow(wid);
+    return wid;
+    }
+
+    var wid = createWindow();
+    var wid1 = createWindow();
+  
+    var gc = X.AllocID();
+    X.CreateGC(gc, wid, { foreground: black, background: white } );
+    
+    X.on('event', function(ev) {
+        //console.log(ev);
+        if (ev.type == 12)
+        {
+            // expose
+        } else if (ev.type == 6) {
+            X.PolyPoint(0, ev.wid, gc, [ev.x, ev.y]);
+            // send copy of event to the second window
+            if (ev.wid == wid) // don't send it from second window
+            {
+                // set window in the event we are sending
+                var n = wid1;
+                var offset = 12;
+                var buf = ev.rawData;
+                buf[offset++] = n & 0xff;
+                buf[offset++] = (n >> 8) & 0xff;
+                buf[offset++] = (n >> 16) & 0xff;
+                buf[offset++] = (n >> 24) & 0xff;
+
+                X.SendEvent(wid1, 1, PointerMotion, ev.rawData);
+            } else {
+                console.log('GotData!');
+            }
+        }
+    });
+
+    X.on('error', function(e) {
+        console.log(e);
+    });
+});