diff --git a/binding.gyp b/binding.gyp
index 8b2c19d..029006f 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -41,6 +41,7 @@
                 "deps/milsko/src/widget/button.c",
                 "deps/milsko/src/widget/separator.c",
                 "deps/milsko/src/widget/numberentry.c",
+                "deps/milsko/src/widget/tab.c",
                 "deps/milsko/src/widget/subwindow.c",
                 "deps/milsko/src/widget/image.c",
                 "deps/milsko/src/widget/submenu.c",
@@ -56,6 +57,7 @@
                 "deps/milsko/src/widget/combobox.c",
                 "deps/milsko/src/widget/checkbox.c",
                 "deps/milsko/src/widget/entry.c",
+                "deps/milsko/src/widget/calendar.c",
                 "deps/milsko/src/widget/window.c",
                 "deps/milsko/src/cursor/default.c",
                 "deps/milsko/src/cursor/arrow.c",
@@ -97,6 +99,24 @@
                 "deps/milsko/src/icon/back.c",
                 "deps/milsko/src/icon/computer.c",
                 "deps/milsko/src/color.c",
+                "deps/milsko/external/stb_truetype.c",
+                "deps/milsko/external/stb_image.c",
+                "deps/milsko/external/stb_ds.c",
+                "deps/milsko/external/libz/src/inflate.c",
+                "deps/milsko/external/libz/src/compress.c",
+                "deps/milsko/external/libz/src/deflate.c",
+                "deps/milsko/external/libz/src/gzread.c",
+                "deps/milsko/external/libz/src/crc32.c",
+                "deps/milsko/external/libz/src/infback.c",
+                "deps/milsko/external/libz/src/zutil.c",
+                "deps/milsko/external/libz/src/gzlib.c",
+                "deps/milsko/external/libz/src/inftrees.c",
+                "deps/milsko/external/libz/src/uncompr.c",
+                "deps/milsko/external/libz/src/gzwrite.c",
+                "deps/milsko/external/libz/src/trees.c",
+                "deps/milsko/external/libz/src/gzclose.c",
+                "deps/milsko/external/libz/src/inffast.c",
+                "deps/milsko/external/libz/src/adler32.c",
             ],
             "include_dirs": [
                 "deps/milsko/include",
diff --git a/deps/milsko b/deps/milsko
index 49294dc..37c3f9c 160000
--- a/deps/milsko
+++ b/deps/milsko
@@ -1 +1 @@
-Subproject commit 49294dc975ea17a33726069e4d9803ba228e66ff
+Subproject commit 37c3f9cbdc32618abb64209232d81dcc4bb432b8
diff --git a/lib/milsko.ts b/lib/milsko.ts
index a56b6f4..68bdf23 100644
--- a/lib/milsko.ts
+++ b/lib/milsko.ts
@@ -1,14 +1,14 @@
 // @ts-ignore
-import binding from "node-gyp-build";
+import addon from "node-gyp-build";
 import { join } from "node:path";
-import {
+import type {
     BaseWidgetConstructor,
     MwNativeClasses,
     PixmapConstructor
 } from "./types";
 
-export const BaseWidget: BaseWidgetConstructor = binding.BaseWidget;
-export const NativeClasses: MwNativeClasses = binding.Classes;
-export const Pixmap: PixmapConstructor = binding.Pixmap;
+const binding = addon(join(__dirname, ".."));
 
-export default binding(join(__dirname, ".."));
+export const BaseWidget: BaseWidgetConstructor = binding.BaseWidget;
+export const NativeClasses: MwNativeClasses = binding.NativeClasses;
+export const Pixmap: PixmapConstructor = binding.Pixmap;
diff --git a/lib/types.ts b/lib/types.ts
index 1b84dd9..67e7b88 100644
--- a/lib/types.ts
+++ b/lib/types.ts
@@ -5,7 +5,7 @@ export type MwClass = object & { __brand: "MwClass" };
 
 /**
  * `BaseWidget` represents the lowest level form of widgets before the native layer.
- * This class contains the fundamental native methods shared by all widgets.
+ * This class contains the native methods shared by all widgets.
  */
 export interface BaseWidget {
     area: MwRect;
@@ -153,6 +153,7 @@ export interface BaseWidgetConstructor {
 export interface MwNativeClasses {
     Box: MwClass;
     Button: MwClass;
+    Calendar: MwClass;
     CheckBox: MwClass;
     Entry: MwClass;
     Frame: MwClass;
@@ -164,6 +165,7 @@ export interface MwNativeClasses {
     ScrollBar: MwClass;
     SubMenu: MwClass;
     SubWindow: MwClass;
+    Tab: MwClass;
     Viewport: MwClass;
     Window: MwClass;
     ProgressBar: MwClass;
@@ -194,13 +196,12 @@ export interface PixmapOptions {
 }
 
 export interface PixmapConstructor {
-    new (cls: BaseWidget, options?: PixmapOptions): Pixmap;
+    new (widget: BaseWidget, options?: PixmapOptions): Pixmap;
 }
 
 export interface WidgetOptions {
     name?: string;
     parent?: BaseWidget;
-    children?: BaseWidget[];
     x?: number;
     y?: number;
     width?: number;
diff --git a/lib/widget.ts b/lib/widget.ts
index 0257ec9..5b52ee8 100644
--- a/lib/widget.ts
+++ b/lib/widget.ts
@@ -1,5 +1,5 @@
 import { BaseWidget } from "./milsko";
-import { Pixmap } from "./types";
+import type { Pixmap } from "./types";
 
 export class Widget extends BaseWidget {
     public setX(value: number): this {
diff --git a/lib/widgets/box.ts b/lib/widgets/box.ts
index f5afa67..6173cfd 100644
--- a/lib/widgets/box.ts
+++ b/lib/widgets/box.ts
@@ -1,6 +1,6 @@
 import { NativeClasses } from "../milsko";
 import { Widget } from "../widget";
-import { WidgetOptions } from "../types";
+import type { WidgetOptions } from "../types";
 
 export class Box extends Widget {
     constructor(options: WidgetOptions) {
@@ -66,4 +66,16 @@ export class Box extends Widget {
     set inverted(value: boolean) {
         this.setInteger("Iinverted", +value);
     }
+
+    public setWaitLayout(value: number): this {
+        return this.setInteger("IwaitLayout", value);
+    }
+
+    get waitLayout(): number {
+        return this.getInteger("IwaitLayout");
+    }
+
+    set waitLayout(value: number) {
+        this.setInteger("IwaitLayout", value);
+    }
 }
diff --git a/lib/widgets/button.ts b/lib/widgets/button.ts
index 8fbe2f6..5cad5f2 100644
--- a/lib/widgets/button.ts
+++ b/lib/widgets/button.ts
@@ -1,6 +1,6 @@
 import { NativeClasses } from "../milsko";
 import { Widget } from "../widget";
-import { WidgetOptions, Pixmap } from "../types";
+import type { WidgetOptions, Pixmap } from "../types";
 
 export class Button extends Widget {
     constructor(options: WidgetOptions) {
diff --git a/lib/widgets/calendar.ts b/lib/widgets/calendar.ts
new file mode 100644
index 0000000..9fc217c
--- /dev/null
+++ b/lib/widgets/calendar.ts
@@ -0,0 +1,69 @@
+import { NativeClasses } from "../milsko";
+import { Widget } from "../widget";
+import type { WidgetOptions } from "../types";
+
+export class Calendar extends Widget {
+    constructor(options: WidgetOptions) {
+        super(NativeClasses.Calendar, options);
+    }
+
+    public setYear(value: number): this {
+        return this.setInteger("Iyear", value);
+    }
+
+    get year(): number {
+        return this.getInteger("Iyear");
+    }
+
+    set year(value: number) {
+        this.setInteger("Iyear", value);
+    }
+
+    public setMonth(value: number): this {
+        return this.setInteger("Imonth", value);
+    }
+
+    get month(): number {
+        return this.getInteger("Imonth");
+    }
+
+    set month(value: number) {
+        this.setInteger("Imonth", value);
+    }
+
+    public setDate(value: number): this {
+        return this.setInteger("Idate", value);
+    }
+
+    get date(): number {
+        return this.getInteger("Idate");
+    }
+
+    set date(value: number) {
+        this.setInteger("Idate", value);
+    }
+
+    public setDay(value: number): this {
+        return this.setInteger("Iday", value);
+    }
+
+    get day(): number {
+        return this.getInteger("Iday");
+    }
+
+    set day(value: number) {
+        this.setInteger("Iday", value);
+    }
+
+    public setScale(value: number): this {
+        return this.setInteger("Iscale", value);
+    }
+
+    get scale(): number {
+        return this.getInteger("Iscale");
+    }
+
+    set scale(value: number) {
+        this.setInteger("Iscale", value);
+    }
+}
diff --git a/lib/widgets/checkbox.ts b/lib/widgets/checkbox.ts
index fc61f43..9fd57f6 100644
--- a/lib/widgets/checkbox.ts
+++ b/lib/widgets/checkbox.ts
@@ -1,6 +1,6 @@
 import { NativeClasses } from "../milsko";
 import { Widget } from "../widget";
-import { WidgetOptions } from "../types";
+import type { WidgetOptions } from "../types";
 
 export class CheckBox extends Widget {
     constructor(options: WidgetOptions) {
diff --git a/lib/widgets/combobox.ts b/lib/widgets/combobox.ts
index 754cc5d..21dd84e 100644
--- a/lib/widgets/combobox.ts
+++ b/lib/widgets/combobox.ts
@@ -1,6 +1,6 @@
 import { NativeClasses } from "../milsko";
 import { Widget } from "../widget";
-import { WidgetOptions } from "../types";
+import type { WidgetOptions } from "../types";
 
 export class ComboBox extends Widget {
     constructor(options: WidgetOptions) {
diff --git a/lib/widgets/entry.ts b/lib/widgets/entry.ts
index 099883b..9aa6dcb 100644
--- a/lib/widgets/entry.ts
+++ b/lib/widgets/entry.ts
@@ -1,6 +1,6 @@
 import { NativeClasses } from "../milsko";
 import { Widget } from "../widget";
-import { WidgetOptions } from "../types";
+import type { WidgetOptions } from "../types";
 
 export class Entry extends Widget {
     constructor(options: WidgetOptions) {
diff --git a/lib/widgets/frame.ts b/lib/widgets/frame.ts
index 18baa67..4952532 100644
--- a/lib/widgets/frame.ts
+++ b/lib/widgets/frame.ts
@@ -1,6 +1,6 @@
 import { NativeClasses } from "../milsko";
 import { Widget } from "../widget";
-import { WidgetOptions } from "../types";
+import type { WidgetOptions } from "../types";
 
 export class Frame extends Widget {
     constructor(options: WidgetOptions) {
diff --git a/lib/widgets/image.ts b/lib/widgets/image.ts
index fb8ad31..38d4926 100644
--- a/lib/widgets/image.ts
+++ b/lib/widgets/image.ts
@@ -1,6 +1,6 @@
 import { NativeClasses } from "../milsko";
 import { Widget } from "../widget";
-import { WidgetOptions, Pixmap } from "../types";
+import type { WidgetOptions, Pixmap } from "../types";
 
 export class Image extends Widget {
     constructor(options: WidgetOptions) {
diff --git a/lib/widgets/index.ts b/lib/widgets/index.ts
index e844d7e..aa5d031 100644
--- a/lib/widgets/index.ts
+++ b/lib/widgets/index.ts
@@ -1,5 +1,6 @@
 export { Box } from "./box";
 export { Button } from "./button";
+export { Calendar } from "./calendar";
 export { CheckBox } from "./checkbox";
 export { Entry } from "./entry";
 export { Frame } from "./frame";
@@ -17,3 +18,4 @@ export { RadioBox } from "./radiobox";
 export { ComboBox } from "./combobox";
 export { TreeView } from "./treeview";
 export { SubWindow } from "./subwindow";
+export { Tab } from "./tab";
diff --git a/lib/widgets/label.ts b/lib/widgets/label.ts
index b5c423e..64e89cf 100644
--- a/lib/widgets/label.ts
+++ b/lib/widgets/label.ts
@@ -1,6 +1,6 @@
 import { NativeClasses } from "../milsko";
 import { Widget } from "../widget";
-import { WidgetOptions } from "../types";
+import type { WidgetOptions } from "../types";
 
 export class Label extends Widget {
     constructor(options: WidgetOptions) {
diff --git a/lib/widgets/listbox.ts b/lib/widgets/listbox.ts
index f629b0f..15e1622 100644
--- a/lib/widgets/listbox.ts
+++ b/lib/widgets/listbox.ts
@@ -1,6 +1,6 @@
 import { NativeClasses } from "../milsko";
 import { Widget } from "../widget";
-import { WidgetOptions } from "../types";
+import type { WidgetOptions } from "../types";
 
 export class ListBox extends Widget {
     constructor(options: WidgetOptions) {
diff --git a/lib/widgets/menu.ts b/lib/widgets/menu.ts
index 20c58f8..62208c6 100644
--- a/lib/widgets/menu.ts
+++ b/lib/widgets/menu.ts
@@ -1,6 +1,6 @@
 import { NativeClasses } from "../milsko";
 import { Widget } from "../widget";
-import { WidgetOptions } from "../types";
+import type { WidgetOptions } from "../types";
 
 export class Menu extends Widget {
     constructor(options: WidgetOptions) {
diff --git a/lib/widgets/numberentry.ts b/lib/widgets/numberentry.ts
index d268de9..252c651 100644
--- a/lib/widgets/numberentry.ts
+++ b/lib/widgets/numberentry.ts
@@ -1,6 +1,6 @@
 import { NativeClasses } from "../milsko";
 import { Widget } from "../widget";
-import { WidgetOptions } from "../types";
+import type { WidgetOptions } from "../types";
 
 export class NumberEntry extends Widget {
     constructor(options: WidgetOptions) {
diff --git a/lib/widgets/progressbar.ts b/lib/widgets/progressbar.ts
index f99ea4e..dbff0de 100644
--- a/lib/widgets/progressbar.ts
+++ b/lib/widgets/progressbar.ts
@@ -1,6 +1,6 @@
 import { NativeClasses } from "../milsko";
 import { Widget } from "../widget";
-import { WidgetOptions } from "../types";
+import type { WidgetOptions } from "../types";
 
 export class ProgressBar extends Widget {
     constructor(options: WidgetOptions) {
diff --git a/lib/widgets/radiobox.ts b/lib/widgets/radiobox.ts
index be75a2d..1f5b0dc 100644
--- a/lib/widgets/radiobox.ts
+++ b/lib/widgets/radiobox.ts
@@ -1,6 +1,6 @@
 import { NativeClasses } from "../milsko";
 import { Widget } from "../widget";
-import { WidgetOptions } from "../types";
+import type { WidgetOptions } from "../types";
 
 export class RadioBox extends Widget {
     constructor(options: WidgetOptions) {
diff --git a/lib/widgets/scrollbar.ts b/lib/widgets/scrollbar.ts
index 94bc34b..25fcffa 100644
--- a/lib/widgets/scrollbar.ts
+++ b/lib/widgets/scrollbar.ts
@@ -1,6 +1,6 @@
 import { NativeClasses } from "../milsko";
 import { Widget } from "../widget";
-import { WidgetOptions } from "../types";
+import type { WidgetOptions } from "../types";
 
 export class ScrollBar extends Widget {
     constructor(options: WidgetOptions) {
diff --git a/lib/widgets/submenu.ts b/lib/widgets/submenu.ts
index ce8c796..f627b36 100644
--- a/lib/widgets/submenu.ts
+++ b/lib/widgets/submenu.ts
@@ -1,6 +1,6 @@
 import { NativeClasses } from "../milsko";
 import { Widget } from "../widget";
-import { WidgetOptions } from "../types";
+import type { WidgetOptions } from "../types";
 
 export class SubMenu extends Widget {
     constructor(options: WidgetOptions) {
diff --git a/lib/widgets/subwindow.ts b/lib/widgets/subwindow.ts
index 412d1f7..cee9747 100644
--- a/lib/widgets/subwindow.ts
+++ b/lib/widgets/subwindow.ts
@@ -1,6 +1,6 @@
 import { NativeClasses } from "../milsko";
 import { Widget } from "../widget";
-import { WidgetOptions, Pixmap } from "../types";
+import type { WidgetOptions, Pixmap } from "../types";
 
 export class SubWindow extends Widget {
     constructor(options: WidgetOptions) {
diff --git a/lib/widgets/tab.ts b/lib/widgets/tab.ts
new file mode 100644
index 0000000..d8bad1b
--- /dev/null
+++ b/lib/widgets/tab.ts
@@ -0,0 +1,21 @@
+import { NativeClasses } from "../milsko";
+import { Widget } from "../widget";
+import type { WidgetOptions } from "../types";
+
+export class Tab extends Widget {
+    constructor(options: WidgetOptions) {
+        super(NativeClasses.Tab, options);
+    }
+
+    public setValue(value: number): this {
+        return this.setInteger("Ivalue", value);
+    }
+
+    get value(): number {
+        return this.getInteger("Ivalue");
+    }
+
+    set value(value: number) {
+        this.setInteger("Ivalue", value);
+    }
+}
diff --git a/lib/widgets/treeview.ts b/lib/widgets/treeview.ts
index 9a4ce57..7e3ee6a 100644
--- a/lib/widgets/treeview.ts
+++ b/lib/widgets/treeview.ts
@@ -1,6 +1,6 @@
 import { NativeClasses } from "../milsko";
 import { Widget } from "../widget";
-import { WidgetOptions } from "../types";
+import type { WidgetOptions } from "../types";
 
 export class TreeView extends Widget {
     constructor(options: WidgetOptions) {
diff --git a/lib/widgets/viewport.ts b/lib/widgets/viewport.ts
index 214edf4..097606b 100644
--- a/lib/widgets/viewport.ts
+++ b/lib/widgets/viewport.ts
@@ -1,6 +1,6 @@
 import { NativeClasses } from "../milsko";
 import { Widget } from "../widget";
-import { WidgetOptions } from "../types";
+import type { WidgetOptions } from "../types";
 
 export class Viewport extends Widget {
     constructor(options: WidgetOptions) {
diff --git a/lib/widgets/window.ts b/lib/widgets/window.ts
index 6da7f00..ccc03df 100644
--- a/lib/widgets/window.ts
+++ b/lib/widgets/window.ts
@@ -1,7 +1,7 @@
 import { NativeClasses } from "../milsko";
 import { Widget } from "../widget";
-import { MwSizeHints } from "../structs";
-import { WidgetOptions, Pixmap } from "../types";
+import type { MwSizeHints } from "../structs";
+import type { WidgetOptions, Pixmap } from "../types";
 
 export class Window extends Widget {
     constructor(options: WidgetOptions) {
diff --git a/package.json b/package.json
index 91b08fc..b266d65 100644
--- a/package.json
+++ b/package.json
@@ -1,8 +1,8 @@
 {
   "name": "milsko",
-  "version": "1.0.1",
+  "version": "1.2",
   "description": "Lightweight and cross-platform native GUI toolkit",
-  "upstream": "ea20a31694",
+  "upstream": "v1.2",
   "main": "dist/index.js",
   "scripts": {
     "install": "node-gyp-build",
diff --git a/scripts/bindgen.js b/scripts/bindgen.js
index af0f391..0f09096 100644
--- a/scripts/bindgen.js
+++ b/scripts/bindgen.js
@@ -218,7 +218,7 @@ function scanProperties(root) {
 
     widgetOut.write(
         "import { BaseWidget } from \"./milsko\"\n" +
-        "import { Pixmap } from \"./types\"\n\n" +
+        "import type { Pixmap } from \"./types\"\n\n" +
         "export class Widget extends BaseWidget {\n"
     );
 
@@ -287,13 +287,13 @@ function scanWidgets(root) {
 
         if (structImports.length) {
             widgetFile.write(
-                "import { " + structImports.join(", ") +
+                "import type { " + structImports.join(", ") +
                 " } from \"../structs\"\n"
             );
         }
 
         widgetFile.write(
-            "import { " + typeImports.join(", ") +
+            "import type { " + typeImports.join(", ") +
             " } from \"../types\"\n"
         );
 
diff --git a/src/classes.cpp b/src/classes.cpp
index 9553c4e..60a1337 100644
--- a/src/classes.cpp
+++ b/src/classes.cpp
@@ -9,6 +9,7 @@ Napi::Object ClassesInit(Napi::Env env, Napi::Object exports) {
 
     classes.Set("Box", NAPI_MWCLASS(env, MwBoxClass));
     classes.Set("Button", NAPI_MWCLASS(env, MwButtonClass));
+    classes.Set("Calendar", NAPI_MWCLASS(env, MwCalendarClass));
     classes.Set("CheckBox", NAPI_MWCLASS(env, MwCheckBoxClass));
     classes.Set("Entry", NAPI_MWCLASS(env, MwEntryClass));
     classes.Set("Frame", NAPI_MWCLASS(env, MwFrameClass));
@@ -20,6 +21,7 @@ Napi::Object ClassesInit(Napi::Env env, Napi::Object exports) {
     classes.Set("ScrollBar", NAPI_MWCLASS(env, MwScrollBarClass));
     classes.Set("SubMenu", NAPI_MWCLASS(env, MwSubMenuClass));
     classes.Set("SubWindow", NAPI_MWCLASS(env, MwSubWindowClass));
+    classes.Set("Tab", NAPI_MWCLASS(env, MwTabClass));
     classes.Set("Viewport", NAPI_MWCLASS(env, MwViewportClass));
     classes.Set("Window", NAPI_MWCLASS(env, MwWindowClass));
     classes.Set("ProgressBar", NAPI_MWCLASS(env, MwProgressBarClass));
diff --git a/src/utils.hpp b/src/utils.hpp
deleted file mode 100644
index ab35dff..0000000
--- a/src/utils.hpp
+++ /dev/null
@@ -1,2 +0,0 @@
-#include <napi.h>
-
diff --git a/src/widget.cpp b/src/widget.cpp
index e11d807..30af918 100644
--- a/src/widget.cpp
+++ b/src/widget.cpp
@@ -18,7 +18,7 @@ Napi::Object MwBaseWidget::Init(Napi::Env env, Napi::Object exports) {
         InstanceMethod("addTickList", &MwBaseWidget::AddTickList),
         InstanceMethod("forceRender", &MwBaseWidget::ForceRender),
         InstanceMethod("reparent", &MwBaseWidget::Reparent),
-        InstanceMethod("add", &MwBaseWidget::AddChild),
+        InstanceMethod("addChild", &MwBaseWidget::AddChild),
         InstanceMethod("destroy", &MwBaseWidget::Destroy),
         InstanceMethod("getClipboard", &MwBaseWidget::GetClipboard),
 
@@ -52,17 +52,138 @@ Napi::ObjectWrap<MwBaseWidget>(info) {
     Napi::Env env = info.Env();
     Napi::HandleScope scope(env);
 
-    handle = MwCreateWidget(MwWindowClass, "window", nullptr, 0, 0, 300, 300);
+    if (info.Length() < 1 || !info[0].IsExternal()) {
+        Napi::TypeError::New(env, "Expected a MwClass as first argument")
+            .ThrowAsJavaScriptException();
+        return;
+    }
+
+    MwClass cls = info[0].As<Napi::External<_MwClass>>().Data();
+    std::string name = "widget"; // name is unused anyways 
+    MwBaseWidget *parent = nullptr;
+    int xPos = 0;
+    int yPos = 0;
+    unsigned int width = 0;
+    unsigned int height = 0;
+
+    if (info.Length() > 1 && info[1].IsObject()) {
+        Napi::Object params = info[1].As<Napi::Object>();
+
+        if (params.Has("name")) {
+            Napi::Value nameParam = params.Get("name");
+
+            if (nameParam.IsString()) {
+                name = nameParam.As<Napi::String>().Utf8Value();
+            } else {
+                Napi::TypeError::New(env, "The name parameter must be a string")
+                    .ThrowAsJavaScriptException();
+                return;
+            }
+        }
+
+        if (params.Has("parent")) {
+            Napi::Value parentParam = params.Get("parent");
+
+            if (parentParam.IsObject()) {
+                Napi::Object parentObj = parentParam.As<Napi::Object>();
+                bool isInstance = parentObj.InstanceOf(constructor.Value());
+
+                if (isInstance) {
+                    parent = Unwrap(parentObj);
+                } else {
+                    Napi::TypeError::New(env, "The parent parameter is not an instance of a widget")
+                        .ThrowAsJavaScriptException();
+                    return;
+                }
+            } else {
+                Napi::TypeError::New(env, "The parent parameter must be an instance of a widget")
+                    .ThrowAsJavaScriptException();
+                return;
+            }
+        }
+
+        if (params.Has("x")) {
+            Napi::Value xParam = params.Get("x");
+            if (xParam.IsNumber()) {
+                xPos = xParam.As<Napi::Number>().Int32Value();
+            } else {
+                Napi::TypeError::New(env, "The x parameter must be a number")
+                    .ThrowAsJavaScriptException();
+                return;   
+            }
+        }
+
+        if (params.Has("y")) {
+            Napi::Value yParam = params.Get("y");
+            if (yParam.IsNumber()) {
+                yPos = yParam.As<Napi::Number>().Int32Value();
+            } else {
+                Napi::TypeError::New(env, "The y parameter must be a number")
+                    .ThrowAsJavaScriptException();
+                return;   
+            }
+        }
+
+        if (params.Has("width")) {
+            Napi::Value widthParam = params.Get("width");
+            if (widthParam.IsNumber()) {
+                width = widthParam.As<Napi::Number>().Uint32Value();
+            } else {
+                Napi::TypeError::New(env, "The width parameter must be a number")
+                    .ThrowAsJavaScriptException();
+                return;   
+            }
+        }
+
+        if (params.Has("height")) {
+            Napi::Value heightParam = params.Get("height");
+            if (heightParam.IsNumber()) {
+                height = heightParam.As<Napi::Number>().Uint32Value();
+            } else {
+                Napi::TypeError::New(env, "The height parameter must be a number")
+                    .ThrowAsJavaScriptException();
+                return;   
+            }
+        }
+    }
+
+    handle = MwCreateWidget(
+        cls,
+        name.c_str(),
+        parent ? parent->handle : nullptr,
+        xPos, yPos,
+        width, height
+    );
+
+    if (!handle) {
+        Napi::Error::New(env, "A native exception occured when creating the widget")
+            .ThrowAsJavaScriptException();
+        return;
+    }
+
+    if (parent) {
+        parent->children.push_back(this);
+        this->parent = parent;
+    }
 };
 
 MwBaseWidget::~MwBaseWidget() {
     // call destructors for each children
     if (children.size() > 0) {
-        for (const auto &child : children) {
-            delete child;
+        for (size_t i = 0; i < children.size(); i++) {
+            delete children[i];
         }
     }
 
+    if (parent) {
+        for (size_t i = 0; i < parent->children.size(); i++) {
+			if (parent->children[i] == this) {
+				parent->children.erase(parent->children.begin() + i);
+				break;
+			}
+		}
+    }
+
     if (handle)
         MwDestroyWidget(handle);
 };
@@ -249,26 +370,24 @@ Napi::Value MwBaseWidget::Reparent(const Napi::CallbackInfo &info) {
 Napi::Value MwBaseWidget::AddChild(const Napi::CallbackInfo &info) {
     Napi::Env env = info.Env();
 
-    if (info.Length() < 1 || !info[0].IsArray()) {
-        Napi::TypeError::New(env, "Expected an instance of a widget class as argument")
+    if (info.Length() < 1) {
+        Napi::TypeError::New(env, "Expected at least one instance of a widget class as argument")
             .ThrowAsJavaScriptException();
         return env.Undefined();
     }
 
-    Napi::Array widgets = info[0].As<Napi::Array>();
-
-    for (uint32_t i = 0; i < widgets.Length(); i++) {
-        const Napi::Value value = widgets.Get(i);
+    for (size_t i = 0; i < info.Length(); i++) {
+        const Napi::Value value = info[i];
 
         if (!value.IsObject()) {
             Napi::TypeError::New(env,
-                "Expected argument " + std::to_string(i) + "to be instance of a widget"
+                "Expected argument " + std::to_string(i) + "to be an instance of a widget"
             )
                 .ThrowAsJavaScriptException();
             return env.Null();
         }
 
-        const Napi::Object wrapped = widgets.As<Napi::Object>();
+        const Napi::Object wrapped = value.As<Napi::Object>();
         const bool isInstance = wrapped.InstanceOf(constructor.Value());
 
         if (isInstance) {