HarmonyOS如何使用TextInput将输入的小写字字母强制转成大写显示

@Entry 
@Component 
struct TextInputUpperCase { 
  @State text: string = ''; 
  build() { 
    Row() { 
      Column() { 
        TextInput({ text: this.text }) 
          .onChange((value: string) => { 
            this.text = value.toUpperCase(); 
          }) 
      } 
      .width('100%') 
    } 
    .height('100%') 
  } 
}