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VarImp function (oleauto.h)

  • Article

Performs a bitwise implication on two variants.

Syntax

HRESULT VarImp(
  [in]  LPVARIANT pvarLeft,
  [in]  LPVARIANT pvarRight,
  [out] LPVARIANT pvarResult
);

Parameters

[in] pvarLeft

The first variant.

[in] pvarRight

The second variant.

[out] pvarResult

The result variant.

Return value

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

Remarks

The function operates as follows.

pvarLeft pvarRight pvarResult
TRUE TRUE TRUE
TRUE FALSE TRUE
TRUE NULL TRUE
FALSE TRUE TRUE
FALSE FALSE TRUE
FALSE NULL TRUE
NULL TRUE TRUE
NULL FALSE NULL
NULL NULL NULL
 

Because VarImp performs bitwise operations on pvarLeft and pvarRight instead of logical operations a pvarResult of TRUE is returned by this function call.

Requirements

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