diff --git a/lib/gtk.js b/lib/gtk.js
index 50f9579..5de4e87 100644
--- a/lib/gtk.js
+++ b/lib/gtk.js
@@ -1,7 +1,6 @@
 ////////////////////////////////////////////////////////////////////////
 // GTKServer API
 ////////////////////////////////////////////////////////////////////////
-
 var SHELL = require("lib/shell");
 
 // set binPath
@@ -14,34 +13,39 @@ var GTKServer = SHELL.createExecObject([binPath, "-stdin"]);
 var GTKWidgets = {};
 
 // Common (Element)
-var GTKWidget = function(callback) {
+var GTKWidget = function() {
     this.widgetType = "GTKWidget";
     this.widgetID = GTKCreateWidget(this);
-    this.callback = callback;
+    this.onEventTriggered = function() {};
 
     GTKWidgets[this.widgetID] = this;
 };
 
 // GTKCreateElement
 var GTKCreateWidget = function(widget) {
-    var command = [];
+    var widgetID = "", commands = [];
 
-    switch(widget.widgetType) {
+    switch (widget.widgetType) {
         case "Window":
-            command.push("gtk_window_new");
-            command.push(this.type);
+            commands.push([
+                "gtk_window_new",
+                this.type
+            ]);
             break;
 
         case "Table":
-            command.push("gtk_table_new");
-            command.push(this.rows);
-            command.push(this.columns);
-            command.push(this.homogeneous);
+            commands.push([
+                "gtk_table_new",
+                this.rows,
+                this.columns,
+                this.homogeneous
+            ]);
 
             // attach sub widgets to table
             var subWidgets = widget.attachedWidgets;
-            for(var i = 0; i < subWidgets.length; i++) {
-                GTKExecCommand([
+            var countSubWidgets = subWidgets.length;
+            while(countSubWidgets > 0) {
+                commands.push([
                     "gtk_table_attach_defaults",
                     this.widgetID,
                     subWidgets[i].widget.widgetID,
@@ -50,44 +54,62 @@ var GTKCreateWidget = function(widget) {
                     subWidgets[i].top,
                     subWidgets[i].buttom
                 ]);
+
+                countSubWidgets--;
             }
             break;
 
         case "Button":
-            command.push("gtk_button_new_with_label");
-            command,push(this.title);
+            commands.push([
+                "gtk_button_new_with_label",
+                this.text
+            ]);
             break;
-            
+
         case "Entry":
-            command.push("gtk_entry_new");
+            commands.push([
+                "gtk_entry_new",
+                "NULL",
+                "NULL"
+            ]);
             break;
 
         case "RadioBox":
-            command = "";
-            break;
-        
-        case "CheckBox":
-            command = "";
+            commands.push([
+                "gtk_radio_button_new_with_label_from_widget",
+                this.member,
+                this.text
+            ]);
             break;
 
         case "TextBox":
-            command.push("gtk_text_new");
-            command.push("NULL");
-            command.push("NULL");
+            commands.push([
+                "gtk_text_new",
+                "NULL",
+                "NULL"
+            ]);
             break;
     }
 
-    return GTKExecCommand(command);
+    // get widgetID from first command
+    widgetID = GTKExecCommand(commands.pop());
+
+    // execute next command
+    while(commands.length > 0) {
+        GTKExecCommand(commands.pop());
+    }
+
+    return widgetID;
 };
 
 // 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") {
+    for (var i = 0; i < command.length; i++) {
+        if (typeof(command[i]) == "number") {
+            _command.push((command[i] == 0 ? '0' : command[i]));
+        } else if (typeof(command[i]) == "string") {
             _command.push(command[i]);
         }
     }
@@ -152,7 +174,7 @@ Table.prototype.constructor = Table;
 // Button
 var Button = function() {
     GTKWidget.apply(this, arguments);
-    
+
     this.elementType = "Button";
     this.text = "New Button";
 };
@@ -172,6 +194,31 @@ var Entry = function() {
             this.widgetID
         ]);
     };
+
+    this.empty = function() {
+        return GTKExecCommand([
+            "gtk_editable_delete_text",
+            this.widgetID,
+            0,
+            -1
+        ]);
+    };
+    this.getText = function() {
+        return GTKExecCommand([
+            "gtk_entry_get_text",
+            this.widgetID
+        ]);
+    };
+    this.setText = function(text) {
+        .
+        return GTKExecCommand([
+            "gtk_entry_set_text",
+            this.widgetID,
+            CHR(34) + text + CHR(10) + CHR(34)
+        ]);
+    };
+
+    this.setText(this.text);
 };
 Entry.prototype = new GTKWidget();
 Entry.prototype.constructor = Entry;
@@ -182,26 +229,31 @@ var RadioBox = function() {
 
     this.elementType = "RadioBox";
     this.text = "New RadioBox";
+    this.member = "NULL";
 };
 RadioBox.prototype = new GTKWidget();
 RadioBox.prototype.constructor = RadioBox;
 
-// CheckBox
-var CheckBox = function() {
-    GTKWidget.apply(this, arguments);
-
-    this.elementType = "CheckBox";
-    this.text = "New CheckBox";
-};
-CheckBox.prototype = new GTKWidget();
-CheckBox.prototype.constructor = CheckBox;
-
 // TextBox
 var TextBox = function() {
     GTKWidget.apply(this, arguments);
-    
+
     this.elementType = "TextBox";
     this.text = "New TextBox";
+
+    this.setText = function(text) {
+        return GTKExecCommand([
+            "gtk_text_insert",
+            this.widgetID,
+            "NULL",
+            "NULL",
+            "NULL",
+            CHR(34) + text + CHR(10) + CHR(34),
+            "-1"
+        ]);
+    };
+
+    this.setText(this.text);
 };
 TextBox.prototype = new GTKWidget();
 TextBox.prototype.constructor = TextBox;
@@ -210,14 +262,14 @@ TextBox.prototype.constructor = TextBox;
 var GTKWait = function() {
     var even;
 
-    while(true) {
+    while (true) {
         even = GTKExecCommand([
             "gtk_server_callback",
             "wait"
         ]);
 
-        if(even in GTKWidgets) {
-            GTKWidgets[even].callback();
+        if (even in GTKWidgets) {
+            GTKWidgets[even].onEventTriggered();
         }
     }
 };
diff --git a/lib/std.js b/lib/std.js
index 6976862..0c56162 100644
--- a/lib/std.js
+++ b/lib/std.js
@@ -64,6 +64,10 @@ global.sleep = function(ms, callback) {
     }
 }
 
+global.CHR = function(ord) {
+	return String.fromCharCode(ord);
+}
+
 /////////////////////////////////////////////////////////////////////////////////
 // Private APIs / Utility functions
 /////////////////////////////////////////////////////////////////////////////////