QueryDevices Method

Retrieves information on installed and configured data acquisition devices.

Syntax

Variant = object.QueryDevices( )

The QueryDevices method syntax has these parts:

Part Description

object Required. A valid Mathcad Data Acquisition Control object.

Remarks

The QueryDevices method is called when the control initializes and looks for installed and confugured data acquisition devices on your computer. The results are stored in the InstalledDevices collection. The QueryDevices method returns 0 if there was at least one supported device installed on your computer and -1 otherwise.

Example

Sub GetDeviceInfo()

  Dim McadDAQ As AnalogIO

  Dim vResult as Variant

  'the next statement assumes there was a Mathcad Data Acquisition control called

  ' AnalogIO1 on Form1 of a VisualBasic project

  Set McadDAQ = Form1.AnalogIO1

  vResult = McadDAQ.QueryDevices

End Sub