如何拿到文本框文字的宽度数值

import { MeasureText } from '@kit.ArkUI';

@Entry
@Component
struct Index {
  @State message: string = 'Hello World'
  @State textWidth: number = MeasureText.measureText({
    textContent: "Hello word",
    fontSize: '50px'
  })

  build() {
    Row() {
      Column() {
        Text("The width of 'Hello World': " + this.textWidth)
      }
      .width('100%')
    }
    .height('100%')
  }
}