diff --git a/src/core/window/impl/WindowFormImpl.ts b/src/core/window/impl/WindowFormImpl.ts
index efba156..b36a9b7 100644
--- a/src/core/window/impl/WindowFormImpl.ts
+++ b/src/core/window/impl/WindowFormImpl.ts
@@ -80,8 +80,8 @@ export default class WindowFormImpl implements IWindowForm {
     const wf = document.createElement('window-form-element')
     wf.dragContainer = document.body
     wf.snapDistance = 20
-    wf.addEventListener('onDragStart', (e) => {
-      console.log('dragstart')
+    wf.addEventListener('windowForm:dragStart', (e) => {
+      console.log('dragstart', e)
     })
     this.desktopRootDom.appendChild(wf)
   }
diff --git a/src/core/window/ui/WindowFormElement.ts b/src/core/window/ui/WindowFormElement.ts
index 793b019..04fc0d2 100644
--- a/src/core/window/ui/WindowFormElement.ts
+++ b/src/core/window/ui/WindowFormElement.ts
@@ -47,6 +47,16 @@ interface IElementRect {
   left: number;
 }
 
+export interface WindowFormEventMap {
+  'windowForm:dragStart': CustomEvent<TDragStartCallback>;
+  'windowForm:dragMove': CustomEvent<TDragMoveCallback>;
+  'windowForm:dragEnd': CustomEvent<TDragEndCallback>;
+  'windowForm:resizeStart': CustomEvent<IResizeCallbackData>;
+  'windowForm:resizeMove': CustomEvent<IResizeCallbackData>;
+  'windowForm:resizeEnd': CustomEvent<IResizeCallbackData>;
+  'windowForm:stateChange': CustomEvent<{ state: TWindowFormState }>;
+}
+
 @customElement('window-form-element')
 export class WindowFormElement extends LitElement {
   // ==== 公共属性 ====
@@ -84,6 +94,7 @@ export class WindowFormElement extends LitElement {
   private width = 640;
   private height = 360;
   private animationFrame?: number;
+  private resizing = false;
 
   private minimized = false;
   private maximized = false;
@@ -97,6 +108,14 @@ export class WindowFormElement extends LitElement {
 
   static override styles = css`${unsafeCSS(wfStyle)}`;
 
+  protected override createRenderRoot() {
+    const root = this.attachShadow({ mode: 'closed' });
+    const sheet = new CSSStyleSheet();
+    sheet.replaceSync(wfStyle);
+    root.adoptedStyleSheets = [sheet];
+    return root
+  }
+
   override firstUpdated() {
     window.addEventListener('pointerup', this.onPointerUp);
     window.addEventListener('pointermove', this.onPointerMove);
@@ -177,7 +196,9 @@ export class WindowFormElement extends LitElement {
       this.resizeUp(e);
     }
     this.dragging = false;
+    this.resizing = false;
     this.resizeDir = null;
+    document.body.style.cursor = ''
     try { this.releasePointerCapture?.(e.pointerId); } catch {}
   };
 
@@ -287,6 +308,7 @@ export class WindowFormElement extends LitElement {
 
     e.preventDefault();
     e.stopPropagation();
+    this.resizing = true;
     this.resizeDir = dir;
     this.startX = e.clientX;
     this.startY = e.clientY;
@@ -297,6 +319,9 @@ export class WindowFormElement extends LitElement {
     this.startX_host = rect.left;
     this.startY_host = rect.top;
 
+    const target = e.target as HTMLElement;
+    document.body.style.cursor = target.style.cursor || window.getComputedStyle(target).cursor;
+
     this.setPointerCapture?.(e.pointerId);
     this.dispatchEvent(new CustomEvent('windowForm:resizeStart', {
       detail: { x: this.x, y: this.y, width: this.width, height: this.height, dir },
@@ -306,7 +331,7 @@ export class WindowFormElement extends LitElement {
   };
 
   private performResize(e: PointerEvent) {
-    if (!this.resizeDir) return;
+    if (!this.resizeDir || !this.resizing) return;
 
     let newWidth = this.startWidth;
     let newHeight = this.startHeight;
diff --git a/src/core/window/ui/wf.scss b/src/core/window/ui/wf.scss
index a0b0997..f6b99ca 100644
--- a/src/core/window/ui/wf.scss
+++ b/src/core/window/ui/wf.scss
@@ -18,8 +18,6 @@
   overflow: hidden;
   display: flex;
   flex-direction: column;
-  min-width: 200px;
-  min-height: 80px;
   width: 100%;
   height: 100%;
 }
diff --git a/src/core/window/ui/window-form-helper.ts b/src/core/window/ui/window-form-helper.ts
new file mode 100644
index 0000000..957cde9
--- /dev/null
+++ b/src/core/window/ui/window-form-helper.ts
@@ -0,0 +1,20 @@
+import type { WindowFormEventMap } from '@/core/window/ui/WindowFormElement.ts'
+
+export function addWindowFormEventListener<K extends keyof WindowFormEventMap>(
+  el: HTMLElement,
+  type: K,
+  listener: (ev: WindowFormEventMap[K]) => any,
+  options?: boolean | AddEventListenerOptions
+) {
+  // 强制类型转换，保证 TS 不报错
+  el.addEventListener(type, listener as EventListener, options);
+}
+
+export function removeWindowFormEventListener<K extends keyof WindowFormEventMap>(
+  el: HTMLElement,
+  type: K,
+  listener: (ev: WindowFormEventMap[K]) => any,
+  options?: boolean | EventListenerOptions
+) {
+  el.removeEventListener(type, listener as EventListener, options);
+}