1# ArkUI_TextChangeEvent 2 3 4## Overview 5 6Defines the return types for the callback events triggered when the content of an input box changes, including the preview content. 7 8**Since**: 15 9 10**Related module**: [ArkUI_NativeModule](_ark_u_i___native_module.md) 11 12 13## Summary 14 15 16### Member Variables 17 18| Name| Description| 19| -------- | -------- | 20| const char \* [pStr](#pstr) | Text content of the text box. | 21| const char \* [pExtendStr](#pextendstr) | Preview content. | 22| const char \* [number](#number) | Insertion position of the preview content. | 23 24 25## Member Variable Description 26 27 28### pStr 29 30``` 31const char* ArkUI_TextChangeEvent::pStr 32``` 33**Description** 34 35Text content of the text box. 36 37### pExtendStr 38 39``` 40const char* ArkUI_TextChangeEvent::pExtendStr 41``` 42**Description** 43 44Preview content. 45 46### number 47 48``` 49const char* ArkUI_TextChangeEvent::number 50``` 51**Description** 52 53Insertion position of the preview content. 54