diff --git a/lib/gtk.js b/lib/gtk.js
index b8673ad..50f9579 100644
--- a/lib/gtk.js
+++ b/lib/gtk.js
@@ -11,63 +11,134 @@ var binPath = "bin\\gtk-server.exe";
 var GTKServer = SHELL.createExecObject([binPath, "-stdin"]);
 
 // Common (Elements)
-var GTKElements = [];
+var GTKWidgets = {};
 
 // Common (Element)
-var GTKElement = function() {
-    this.type = "GTKElement";
-    this.width = 0;
-    this.height = 0;
-    
-    this.setWidth = function(width) {
-        this.width = width;
-    };
-    this.setHeight = function(height) {
-        this.height = height;
-    };
+var GTKWidget = function(callback) {
+    this.widgetType = "GTKWidget";
+    this.widgetID = GTKCreateWidget(this);
+    this.callback = callback;
 
-    this,onchange = function() {};
-    this.onclick = function() {};
-    this.onmouseover = function() {};
-    this.onmouseout = function() {};
-    this.onkeydown = function() {};
-    this.onload	= function() {};
-    this.addEventListener = function(ev, fn) {
-        if (typeof(fn) == "function") {
-            this['on' + ev] = fn;
-        } else {
-            throw new TypeError("listener must be a function");
-        }
-    };
-
-    GTKElements.push(this);
+    GTKWidgets[this.widgetID] = this;
 };
 
-// GTKServer WriteLine
-var WriteLine = function(line) {
+// GTKCreateElement
+var GTKCreateWidget = function(widget) {
+    var command = [];
+
+    switch(widget.widgetType) {
+        case "Window":
+            command.push("gtk_window_new");
+            command.push(this.type);
+            break;
+
+        case "Table":
+            command.push("gtk_table_new");
+            command.push(this.rows);
+            command.push(this.columns);
+            command.push(this.homogeneous);
+
+            // attach sub widgets to table
+            var subWidgets = widget.attachedWidgets;
+            for(var i = 0; i < subWidgets.length; i++) {
+                GTKExecCommand([
+                    "gtk_table_attach_defaults",
+                    this.widgetID,
+                    subWidgets[i].widget.widgetID,
+                    subWidgets[i].left,
+                    subWidgets[i].right,
+                    subWidgets[i].top,
+                    subWidgets[i].buttom
+                ]);
+            }
+            break;
+
+        case "Button":
+            command.push("gtk_button_new_with_label");
+            command,push(this.title);
+            break;
+            
+        case "Entry":
+            command.push("gtk_entry_new");
+            break;
+
+        case "RadioBox":
+            command = "";
+            break;
+        
+        case "CheckBox":
+            command = "";
+            break;
+
+        case "TextBox":
+            command.push("gtk_text_new");
+            command.push("NULL");
+            command.push("NULL");
+            break;
+    }
+
+    return GTKExecCommand(command);
+};
+
+// GTKExecCommand
+var GTKExecCommand = function(command) {
+    var line, _command = [];
+
+    for(var i = 0; i < command.length; i++) {
+        if(typeof(command[i]) == "number") {
+            _command.push( (command[i] < 1 ? '0' : command[i]) );
+        } else if(typeof(command[i]) == "string") {
+            _command.push(command[i]);
+        }
+    }
+
+    line = _command.join(' ');
+
     GTKServer.StdIn.WriteLine(line);
     return GTKServer.StdOut.ReadLine();
 };
 
+// GTKInit
+var GTKInit = function() {
+    return GTKExecCommand([
+        "gtk_init",
+        "NULL"
+        "NULL"
+    ]);
+};
+
 // Window
 var Window = function() {
-    GTKElement.apply(this, arguments);
+    GTKWidget.apply(this, arguments);
 
-    this.type = "Window";
+    this.elementType = "Window";
+    this.type = 0;
     this.title = "WelsonJS GTK GUI Application";
+
+    this.show() = function() {
+        return GTKExecCommand([
+            "gtk_widget_show_all",
+            this.widgetID
+        ]);
+    };
 };
-Window.prototype = new GTKElement();
+Window.prototype = new GTKWidget();
 Window.prototype.constructor = Window;
 
 // Table
 var Table = function() {
-    GTKElement.apply(this, arguments);
+    GTKWidget.apply(this, arguments);
 
-    this.type = "Table";
-    this.attachedElements = [];
-    this.attach = function(element, left, right, top, bottom) {
-        this.attachedElements.push({
-            "element": element,
+    this.elementType = "Table";
+    this.rows = 1;
+    this.columns = 1;
+    this.homogeneous = true;
+
+    this.attachedWidgets = [];
+
+    this.attach = function(widget, left, right, top, bottom) {
+        this.attachedWidgets.push({
+            "widget": widget,
             "left": left,
             "right": right,
             "top": top,
@@ -75,59 +146,80 @@ var Table = function() {
         });
     };
 };
-Table.prototype = new GTKElement();
+Table.prototype = new GTKWidget();
 Table.prototype.constructor = Table;
 
 // Button
 var Button = function() {
-    GTKElement.apply(this, arguments);
+    GTKWidget.apply(this, arguments);
     
-    this.type = "Button";
+    this.elementType = "Button";
     this.text = "New Button";
 };
-Button.prototype = new GTKElement();
+Button.prototype = new GTKWidget();
 Button.prototype.constructor = Button;
 
-// Label
-var Label = function() {
-    GTKElement.apply(this, arguments);
-    
-    this.type = "Label";
+// Entry
+var Entry = function() {
+    GTKWidget.apply(this, arguments);
+
+    this.elementType = "Entry";
     this.text = "New Label";
+
+    this.focus = function() {
+        return GTKExecCommand([
+            "gtk_widget_grab_focus",
+            this.widgetID
+        ]);
+    };
 };
-Label.prototype = new GTKElement();
-Label.prototype.constructor = Label;
+Entry.prototype = new GTKWidget();
+Entry.prototype.constructor = Entry;
 
 // RadioBox
 var RadioBox = function() {
-    GTKElement.apply(this, arguments);
-    
-    this.type = "RadioBox";
+    GTKWidget.apply(this, arguments);
+
+    this.elementType = "RadioBox";
     this.text = "New RadioBox";
 };
-RadioBox.prototype = new GTKElement();
+RadioBox.prototype = new GTKWidget();
 RadioBox.prototype.constructor = RadioBox;
 
 // CheckBox
 var CheckBox = function() {
-    GTKElement.apply(this, arguments);
+    GTKWidget.apply(this, arguments);
 
-    this.type = "CheckBox";
+    this.elementType = "CheckBox";
     this.text = "New CheckBox";
 };
-CheckBox.prototype = new GTKElement();
+CheckBox.prototype = new GTKWidget();
 CheckBox.prototype.constructor = CheckBox;
 
 // TextBox
 var TextBox = function() {
-    GTKElement.apply(this, arguments);
+    GTKWidget.apply(this, arguments);
     
-    this.type = "TextBox";
+    this.elementType = "TextBox";
     this.text = "New TextBox";
 };
-TextBox.prototype = new GTKElement();
+TextBox.prototype = new GTKWidget();
 TextBox.prototype.constructor = TextBox;
 
-exports.start = function(callback) {
-    // TODO: start
+// GTKWait
+var GTKWait = function() {
+    var even;
+
+    while(true) {
+        even = GTKExecCommand([
+            "gtk_server_callback",
+            "wait"
+        ]);
+
+        if(even in GTKWidgets) {
+            GTKWidgets[even].callback();
+        }
+    }
 };
+
+exports.wait = GTKWait;