# 同一个会议中只有发起共享用户可以批注，其他人员无法同时批注

**URL:** <https://devforum.zoom.us/t/topic/7952>\
**Category:** Windows\
**Created:** [February 9, 2020, 4:42am UTC](https://devforum.zoom.us/t/topic/7952 "2020-02-09T04:42:53Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![zhaoming](https://avatars.discourse-cdn.com/v4/letter/z/7993a0/32.png) [@zhaoming](https://devforum.zoom.us/u/zhaoming)\
**Post date:** [February 9, 2020, 4:42am UTC](https://devforum.zoom.us/t/topic/7952/1 "2020-02-09T04:42:53Z")

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**Description**  
在自定义UI中调用C# Wrapper的 ICustomizedAnnotationController::CreateAnnoObj(…) 返回  
SDKERR\_WRONG\_USEAGE

**Which version?**  
v4.4.57220.1211

**To Reproduce(If applicable)**  
Steps to reproduce the behavior:

1. 用户A创建会议
2. 用户B加入会议
3. 用户A开始共享桌面，并使用画笔注释，此时B可以看到共享画面以及注释
4. 用户B使用入会时创建的本地ShareRender调用CreateAnnoObj(shareRender, &annoObj)
5. 返回SDKERR\_WRONG\_USEAGE，无法创建Customized Annotation Object，导致B用户无法使用画笔注释

**Screenshots**  
无

**Smartphone (please complete the following information):**  
Windows 7， 10

**Additional context**  
无

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<div class="post-metadata">

**Author:** ![carson.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/carson.zoom/32/785_2.png) [@carson.zoom](https://devforum.zoom.us/u/carson.zoom)\
**Post date:** [February 13, 2020, 11:29pm UTC](https://devforum.zoom.us/t/topic/7952/2 "2020-02-13T23:29:31Z")

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Hi [zhaoming](https://devforum.zoom.us/u/zhaoming),

Thanks for the post. 关于您提到的问题：

1. 可以先试试用IAnnotationController.CanDoAnnotation来判断当前用户是否可以做Annotation
2. 请确保在onSharingShareAnnotationStatusChanged的回调中，相应的status等于Ready to use的时候才创建Annotation Obj

希望有所帮助，谢谢！

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<div class="post-metadata">

**Author:** ![DeveloperBot](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/developerbot/32/12632_2.png) [@DeveloperBot](https://devforum.zoom.us/u/DeveloperBot)\
**Post date:** [August 21, 2020, 7:26pm UTC](https://devforum.zoom.us/t/topic/7952/3 "2020-08-21T19:26:02Z")

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Closed on August 21, 2020, 7:26pm UTC