diff --git a/api/@ohos.window.d.ts b/api/@ohos.window.d.ts
index 7bf8f50a56ded0c09aeb1682aad26a265616386c..3b625433099f31812d7f7800028fabb0f24003c3 100644
--- a/api/@ohos.window.d.ts
+++ b/api/@ohos.window.d.ts
@@ -33,7 +33,6 @@ import bundleManager from './@ohos.bundle.bundleManager';
 import { LocalStorage } from '@ohos.arkui.stateManagement';
 import { UIContext } from '@ohos.arkui.UIContext';
 import { ColorMetrics } from '@ohos.arkui.node';
-import { Callback } from './@ohos.base';
 /*** endif */
 
 /*** if arkts 1.1 */
@@ -59,6 +58,18 @@ declare interface Callback<T, V = void> {
 }
 /*** endif */
 
+/*** if arkts 1.2 */
+/**
+ * Defines the window callback.
+ *
+ * @typedef {function}
+ * @syscap SystemCapability.Window.SessionManager
+ * @atomicservice
+ * @since 20
+ */
+type Callback<T, V = void> = (data: T) => V; 
+/*** endif */
+
 /**
  * Window manager.
  *
@@ -6459,7 +6470,8 @@ declare namespace window {
      * @throws { BusinessError } 1300004 - Unauthorized operation.
      * @syscap SystemCapability.Window.SessionManager
      * @atomicservice
-     * @since 15
+     * @since arkts {'1.1':'15', '1.2':'20'}
+     * @arkts 1.1&1.2
      */
     on(type: 'windowWillClose', callback: Callback<void, Promise<boolean>>): void;
 
@@ -6475,7 +6487,8 @@ declare namespace window {
      * @throws { BusinessError } 1300004 - Unauthorized operation.
      * @syscap SystemCapability.Window.SessionManager
      * @atomicservice
-     * @since 15
+     * @since arkts {'1.1':'15', '1.2':'20'}
+     * @arkts 1.1&1.2
      */
     off(type: 'windowWillClose', callback?: Callback<void, Promise<boolean>>): void;