Application Control VIs and Functions

Owning Palette: Programming VIs and Functions

Use the Application Control VIs and functions to programmatically control VIs and LabVIEW applications on the local computer or across a network. You can use these VIs and functions to configure multiple VIs at the same time.

The VIs and functions on this palette can return general LabVIEW error codes.

Palette Object	Description
Call By Reference Node	Calls the VI specified by reference. The reference VI must be a strictly typed reference.
Call Chain	Returns the chain of callers from the current VI to the top-level VI.
Class Specifier Constant	Selects the class of the output.
Close Reference	Closes a refnum associated with an open VI, VI object, an open application instance, or a .NET or ActiveX object.
Get Drag Drop Data	Returns drag data from LabVIEW when you perform a drag and drop operation. Only use this function when it is necessary to access the drag data, not just to examine the data type. If a drag and drop operation is not in progress, LabVIEW returns an error. If the data requested is unavailable, LabVIEW returns an error.
Invoke Node	Invokes a method or action on a reference. Most methods have associated parameters.
Open Application Reference	Returns a reference to a VI Server application running on the specified computer.
Open VI Reference	Returns a reference to a VI, custom control, or global variable specified by a name string or path to the VI's location on disk.
Property Node	Gets (reads) and/or sets (writes) properties of a reference.
Quit LabVIEW	Stops all executing VIs and ends the current instance of LabVIEW.
Static VI Reference	Maintains a static reference to a VI. You can configure the Static VI Reference function to output a generic or strictly typed VI reference.
Stop	Stops the VI in which it executes, just as if you clicked the Abort Execution button on the toolbar.
To More Generic Class	Typecasts a reference, such as a control or a type definition, to a more generic class in the inheritance hierarchy.
To More Specific Class	Typecasts a reference, such as a control or a type definition, to a more specific class in the inheritance hierarchy.
VI Server Reference	Returns a reference to the current VI or application or to a control or indicator in the VI. You can use this reference to access the properties and methods for the associated VI, application, control, or indicator.

Application Control VIs and Functions

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