ActiveX and ​.NET controls in AVEVA Historian Client

aaHistClientTrend and aaHistClientQuery are controls that provide essential functionality of AVEVA Historian Client Trend and AVEVA Historian Client Query for use in container applications such as InTouch® HMI . You can also use AVEVA Historian Client "building block" controls (such as aaHistClientTagPicker, aaHistClientTimeRangePicker, and so on) in your custom applications.

For more information, see Introduction to Controls and Objects.