InitVariantFromDoubleArray function (propvarutil.h)

Article
02/22/2024

Initializes a VARIANT structure with an array of values of type DOUBLE.

Syntax

PSSTDAPI InitVariantFromDoubleArray(
  [in]  const DOUBLE *prgn,
  [in]  ULONG        cElems,
  [out] VARIANT      *pvar
);

Parameters

[in] prgn

Type: const DOUBLE*

Pointer to the source array of DOUBLE values.

[in] cElems

Type: ULONG

The number of elements in the array pointed to by prgn.

[out] pvar

Type: VARIANT*

When this function returns, contains the initialized VARIANT structure.

Return value

Type: HRESULT

If this function succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Remarks

Creates a VT_ARRAY | VT_R8 variant.

Examples

The following example, to be included as part of a larger program, demonstrates how to use InitVariantFromDoubleArray.

DOUBLE rgDoubles[] = {34.7, 12.0};
VARIANT var;

HRESULT hr = InitVariantFromDoubleArray(rgDoubles, ARRAYSIZE(rgDoubles), &var);

if (SUCCEEDED(hr))
{
    // var now is valid and has type VT_ARRAY | VT_R8.
    VariantClear(&propvar);
}

Requirements

Requirement	Value
Minimum supported client	Windows XP with SP2, Windows Vista [desktop apps only]
Minimum supported server	Windows Server 2003 with SP1 [desktop apps only]
Target Platform	Windows
Header	propvarutil.h
Library	Propsys.lib
DLL	Propsys.dll (version 6.0 or later)
Redistributable	Windows Desktop Search (WDS) 3.0