HarmonyOS CustomDialogController套用Scroll

@CustomDialog  
export struct PromptDialog {  
  private promptTitle: string = '温馨提示';  
  private promptContent: string = '';  
  private promptCancel: string = '取消';  
  private promptConfirm: string = '确定';  
  cancelClicked?: () => void;  
  confirmClicked?: () => void;  
  controller: CustomDialogController;  
  build() {  
    Column() {  
      Text(this.promptTitle)  
        .fontSize(15)  
        .fontColor('#222222')  
        .padding(16)  
        .fontWeight(FontWeight.Bold)  
        .width('100%')  
        .textAlign(TextAlign.Center)  
      Scroll() {  
        Column() {  
          Text(this.promptContent)  
            .fontSize(15)  
            .lineHeight(25)  
            .margin({ left: 16, right: 16 })  
            .fontColor('#555555')  
  
          Row() {  
            Button(this.promptCancel)  
              .layoutWeight(1)  
              .fontSize(13)  
              .height('100%')  
              .fontColor('#FFFFFF')  
              .backgroundColor('#555555')  
              .onClick(() => {  
                this.cancelClicked?.()  
              })  
  
            Button(this.promptConfirm)  
              .layoutWeight(1)  
              .fontSize(13)  
              .height('100%')  
              .margin({ left: 20 })  
              .fontColor('#FFFFFF')  
              .backgroundColor($r('app.color.theme_color'))  
              .onClick(() => {  
                this.confirmClicked?.()  
              })  
          }  
          .width('100%')  
          .height(35)  
          .margin({  
            left: 30, top: 16, right: 30, bottom: 16  
          })  
        }  
      }  
    }  
  }  
}
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