HarmonyOS @CustomDialog如何铺满整个屏幕

可以通过设置CustomDialogController以下三个属性达到预期效果：

customStyle: true,
offset: { dx: 0, dy: 0 },
alignment: DialogAlignment.Top
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可参考以下示例：

import { MeasureText } from '@kit.ArkUI';
import measure from '@ohos.measure'
import { http } from '@kit.NetworkKit';

const BLOCK_DEFAULT_BORDER_WIDTH = 4;

@Entry
@Component
struct SliderIndex {
  @State loginState: string = '未登录'
  dialogControllerTwo: CustomDialogController | null = new CustomDialogController({
    builder: CustomDialogExampleTwo({ msg: this.loginState }),
    customStyle: true,
    offset: { dx: 0, dy: 0 },
    alignment: DialogAlignment.Top,

    // offset: { dx: 0, dy: -25 }
  })
  controller?: CustomDialogController

  onPageShow(): void {

  }

  login() {

    return '登录失败';
  }

  build() {
    Column() {
      Text('当前状态:' + this.loginState)
      Text('登录')
        .onClick(() => {

          let res = this.login()
          this.loginState = res
          console.log('denglu ===', res)
          if (res === '登录失败') {
            if (this.dialogControllerTwo) {
              this.dialogControllerTwo.open()
            }
          }
        })
    }
  }
}

@CustomDialog
struct CustomDialogExampleTwo {
  controllerTwo?: CustomDialogController
  @Prop msg: string = ''

  build() {
    Column() {
      Text(this.msg)
        .fontSize(30)
        .height(100)
      Button('点我关闭弹窗')
        .onClick(() => {
          if (this.controllerTwo != undefined) {
            this.controllerTwo.close()
          }
        })
        .margin(20)
    }
    .width('100%')
    .height('100%')
    .backgroundColor(Color.Orange)
  }
}
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