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VariantCopyInd function (oleauto.h)

  • Article

Frees the destination variant and makes a copy of the source variant, performing the necessary indirection if the source is specified to be VT_BYREF.

Syntax

HRESULT VariantCopyInd(
  [out] VARIANT          *pvarDest,
  [in]  const VARIANTARG *pvargSrc
);

Parameters

[out] pvarDest

The destination variant.

[in] pvargSrc

The source variant.

Return value

This function can return one of these values.

Return code Description
S_OK
 Success.
DISP_E_ARRAYISLOCKED
 The variant contains an array that is locked.
DISP_E_BADVARTYPE
 The variant type is not a valid type of variant.
E_INVALIDARG
One of the arguments is not valid.
E_OUTOFMEMORY
Insufficient memory to complete the operation.

Remarks

This function is useful when a copy of a variant is needed, and to guarantee that it is not VT_BYREF, such as when handling arguments in an implementation of IDispatch::Invoke.

For example, if the source is a (VT_BYREF | VT_I2), the destination will be a BYVAL | VT_I2. The same is true for all legal VT_BYREF combinations, including VT_VARIANT.

If pvargSrc is (VT_BYREF | VT_VARIANT), and the contained variant is VT_BYREF, the contained variant is also dereferenced.

This function frees any existing contents of pvarDest.

Requirements

Requirement Value
Target Platform Windows
Header oleauto.h
Library OleAut32.lib
DLL OleAut32.dll

See also

Variant Manipulation Functions