# TRTCMixUser constructor Null safety

TRTCMixUser(

1. {String userId = '',
2. String roomId = "",
3. int x = 0,
4. int y = 0,
5. int width = 0,
6. int height = 0,
7. int zOrder = 0,
8. int streamType = TRTCCloudDef.TRTC_VIDEO_STREAM_TYPE_BIG,
9. bool pureAudio = false}

)

## Implementation

    TRTCMixUser(
        {this.userId = '',
        this.roomId = "",
        this.x = 0,
        this.y = 0,
        this.width = 0,
        this.height = 0,
        this.zOrder = 0,
        this.streamType = TRTCCloudDef.TRTC_VIDEO_STREAM_TYPE_BIG,
        this.pureAudio = false});