InitVariantFromDoubleArray function

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

Syntax


HRESULT InitVariantFromDoubleArray(
  _In_  const DOUBLE  *prgn,
  _In_        ULONG   cElems,
  _Out_       VARIANT *pvar
);

Parameters

prgn [in]

Type: const DOUBLE*

Pointer to the source array of DOUBLE values.

cElems [in]

Type: ULONG

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

pvar [out]

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

Minimum supported client

Windows XP with SP2, Windows Vista [desktop apps only]

Minimum supported server

Windows Server 2003 with SP1 [desktop apps only]

Redistributable

Windows Desktop Search (WDS) 3.0

Header

Propvarutil.h

Library

Propsys.lib

DLL

Propsys.dll (version 6.0 or later)

See also

VariantToDoubleArray
InitVariantFromDouble
InitPropVariantFromDoubleVector

 

 

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