效果如下：

import { promptAction } from '@kit.ArkUI'let customDialogId: number = 0@Builder
function customDialogBuilder() {Column() {Blank().height(30)Text('确定要删除吗？').fontSize(15)Blank().height(40)Row() {Button("取消").onClick(() => {promptAction.closeCustomDialog(customDialogId)}).width(80).height(30).fontColor($r("app.color.btn_button")).backgroundColor($r('app.color.white'))Blank().width(50)Button("确认").onClick(() => {promptAction.closeCustomDialog(customDialogId)}).backgroundColor($r("app.color.btn_button")).fontColor($r('app.color.white')).width(80).height(30)}}
}@Entry
@Component
struct CustomDialog {@State message: string = 'Hello World'@BuildercustomDialogComponent() {customDialogBuilder()}build() {Row() {Column() {Text(this.message).fontSize(50).fontWeight(FontWeight.Bold).onClick(() => {promptAction.openCustomDialog({builder: () => {this.customDialogComponent()},showInSubWindow: false,offset: { dx: 5, dy: 5 },backgroundColor: 0xd9ffffff,cornerRadius: 20,width: '80%',height: 150,borderWidth: 1,borderColor:$r('app.color.white'), //使用borderColor属性，需要和borderWidth属性一起使用shadow: ({radius: 20,color: Color.Grey,offsetX: 50,offsetY: 0}),}).then((dialogId: number) => {customDialogId = dialogId})})}.width('100%')}.height('100%')}
}