> ## Documentation Index
> Fetch the complete documentation index at: https://docs.xbox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# XblPrivacyBlockListChangeEventArgs

> XblPrivacyBlockListChangeEventArgs

Event arguments for a block list change.

## Syntax

```cpp theme={null}
typedef struct XblPrivacyBlockListChangeEventArgs {  
    XblPrivacyListChangeType changeType;  
    uint64_t* xuids;  
    size_t xuidsCount;  
} XblPrivacyBlockListChangeEventArgs  
```

### Members

*changeType*\
Type: [XblPrivacyListChangeType](https://docs.xbox.com/reference/live/xsapi-c/privacy_c/enums/xblprivacylistchangetype.md)

The type of change (Added or Removed).

*xuids*\
Type: uint64\_t\*

The XBOX user IDs affected by the change.

*xuidsCount*\
Type: size\_t

The number of entries in the xuids array.

## Remarks

XBOX services passes this structure to an [XblPrivacyBlockListChangedHandler](https://docs.xbox.com/reference/live/xsapi-c/privacy_c/functions/xblprivacyblocklistchangedhandler.md) callback. The `xuids` array and the other fields are valid only until the callback returns. Copy any XBOX user IDs that you need to keep.

## Argument of

[XblPrivacyBlockListChangedHandler](https://docs.xbox.com/reference/live/xsapi-c/privacy_c/functions/xblprivacyblocklistchangedhandler.md)

## Requirements

**Header:** privacy\_c.h

## See also

[privacy\_c](https://docs.xbox.com/reference/live/xsapi-c/privacy_c/privacy_c_members.md)


## Related topics

- [XblPrivacyListChangeType](https://docs.xbox.com/reference/live/xsapi-c/privacy_c/enums/xblprivacylistchangetype.md)
- [XblPrivacyBlockListChangedHandler](https://docs.xbox.com/reference/live/xsapi-c/privacy_c/functions/xblprivacyblocklistchangedhandler.md)
- [privacy_c (contents)](https://docs.xbox.com/reference/live/xsapi-c/privacy_c/privacy_c_members.md)
- [XblPrivacyMuteListChangeEventArgs](https://docs.xbox.com/reference/live/xsapi-c/privacy_c/structs/xblprivacymutelistchangeeventargs.md)
- [XblPrivacyMuteListChangedHandler](https://docs.xbox.com/reference/live/xsapi-c/privacy_c/functions/xblprivacymutelistchangedhandler.md)