---
title: VencCallBacker()
description: "VencCallBacker的构造函数。"
url: https://www.hiascend.com/document/detail/zh/Atlas200IDKA2DeveloperKit/latest/Application%20Development%20Guide/msadg/mxvisionug_1149.html
sourcePath: /source/zh/Atlas200IDKA2DeveloperKit/23.0.RC2/Application Development Guide/msadg/mxvisionug_1149.html
indexId: cabb2f32451d74ac5887b1a087db52326ce57600f08ef4a5e748ccdf6ca58021102
---
# VencCallBacker()

#### 函数功能

VencCallBacker的构造函数。


#### 输出参数说明

VencCallBacker对象。