Certified LabVIEW Associate Developer (CLAD) Practice Test

Question: 1 / 400

What must you pass to a SubVI to control a front panel control from a top-level VI?

The control's properties

The control's methods

The control's reference

To control a front panel control from a top-level VI, it is necessary to pass the control's reference to the SubVI. This is because a reference serves as a unique identifier that allows the SubVI to access and manipulate the specific control you wish to control. By passing the control's reference, the SubVI can read and write data to the control, modify its properties, and even respond to events related to the control.

The control's properties and methods, while relevant to how the control functions, still rely on having the reference to interact with those properties and methods. Simply passing the data type does not provide the necessary means to access or manipulate the control within the SubVI. Therefore, the control's reference is the essential element in establishing that connection.

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The control's data type

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