LabWindows/CVI

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CA_VariantGetULongLong

CA_VariantGetULongLong

HRESULT CA_VariantGetULongLong (const VARIANT *variant, unsigned long long *value);

Purpose

Copies the value in a variant into an unsigned long long integer variable.

CA_VariantGetULongLong returns an error if the variant does not contain an unsigned long long integer value.

Parameters

Input
Name Type Description
variant const VARIANT * Pointer to a variant that contains an unsigned long long integer value.
Output
Name Type Description
value unsigned long long Unsigned long long integer value CA_VariantGetULongLong copies from the variant.

Return Value

Name Type Description
status HRESULT A value indicating whether an error occurred. Negative error codes indicate function failure.

Error codes are defined in CVIversion\include\cviauto.h and <Program Files>\National Instruments\Shared\MSDTRedistributables\SDKHeaderFiles\8.1\winerror.h. The LabWindows/CVI ActiveX Library explicitly returns error codes. Other error codes in winerror.h are generated by ActiveX servers and passed on to you by the LabWindows/CVI ActiveX Library.

You can use CA_GetAutomationErrorString to get the description of an error code or CA_DisplayErrorInfo to display the description of the error code.

Additional Information

Library: ActiveX Library

Include file: cviauto.h

LabWindows/CVI compatibility: LabWindows/CVI 9.0 and later

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