TextCompositionStartedEventArgs 类    
定义
重要
一些信息与预发行产品相关,相应产品在发行之前可能会进行重大修改。 对于此处提供的信息,Microsoft 不作任何明示或暗示的担保。
为 TextBox 和 RichEditBox 上的 TextCompositionStarted 事件提供事件数据。
public ref class TextCompositionStartedEventArgs sealed/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
class TextCompositionStartedEventArgs final/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
class TextCompositionStartedEventArgs final[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
public sealed class TextCompositionStartedEventArgs[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
public sealed class TextCompositionStartedEventArgsPublic NotInheritable Class TextCompositionStartedEventArgs- 继承
- 属性
Windows 要求
| 设备系列 | 
							Windows 10 (在 10.0.10240.0 中引入) | 
| API contract | 
							Windows.Foundation.UniversalApiContract (在 v1.0 中引入) | 
注解
有关详细信息,请参阅 TextBox.TextCompositionStarted 和 RichEditBox.TextCompositionStarted 事件。
属性
| Length | 获取用户使用输入法编辑器撰写的文本部分的长度, (输入法) 。 | 
| StartIndex | 获取用户使用输入法编辑器撰写的文本的起始位置 (输入法) 。 |