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Query Registry Key Info (G Dataflow)

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Last Modified: June 25, 2019

Retrieves information about keys.

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Caution

Incorrectly modifying the registry can damage Windows or prevent you from starting Windows.

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reference in

Reference to the open registry key.

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error in

Error conditions that occur before this node runs.

The node responds to this input according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Default: No error

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reference out

Reference to the open registry key.

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class

Class or object type of the key.

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value info

Set of parameters describing the set of values and data.

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numValues

Number of values under the key specified by hKey.

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maxValueNameLen

Length of the longest value name under the key specified by hKey.

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maxValueDataLen

Length of the longest datum under the key specified by hKey.

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error out

Error information.

The node produces this output according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.
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subkey info

Set of parameters describing the subkeys.

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numSubKeys

Number of subkeys under the key specified by hKey.

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maxSubKeyLen

Length of the longest subkey name under the key specified by hKey.

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maxSubKeyClassLen

Length of the longest class name under the key specified by hKey.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

Web Server: Not supported in VIs that run in a web application

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