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Returns an automation refnum, which points to a specific ActiveX object. Details  Examples

	Automation Refnum is the refnum associated with an ActiveX object.
	machine name indicates on which machine the VI should open the Automation Refnum. If no machine name is given, the object is opened on the local machine.
	If open new instance is TRUE, LabVIEW creates a new instance of the Automation Refnum. If FALSE (default), LabVIEW tries to connect to an instance of the refnum that is already open. If the attempt is unsuccessful, LabVIEW opens a new instance.
	error in describes error conditions that occur before this VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node. status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE. code is the error or warning code. The default is 0. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code. source specifies the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
	Automation Refnum has the same value as Automation Refnum.
	error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces. Right-click the error out front panel indicator and select Explain Error from the shortcut menu for more information about the error. status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred. code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code. source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.

Automation Open Details

Select the class of the object by right-clicking the function and selecting Select ActiveX Class from the shortcut menu. After you open the refnum, you can pass it to other ActiveX functions. Select only creatable classes as inputs to this function. If you wire machine name, the object opens on the remote machine. Otherwise, the object opens on the local machine.

Note  Distributed COM must be properly installed and configured to open a remote reference.

Examples

Refer to the following VIs for examples of using the Automation Open function:

• labview\examples\comm\actxpp.llb\Slideshow.vi

   

• labview\examples\comm\axevent.llb\ActiveX Event Callback for Excel.vi