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VarNot.3w

NAME

VarNot (OLEAUT32.174)

SYNOPSIS

HRESULT VarNot
 (
  LPVARIANT pVarIn,
  LPVARIANT pVarOut
 )

DESCRIPTION

Perform a not operation on a variant.

PARAMS

pVarIn [In] Source variant.

pVarOut [Out] Destination for converted value.

RETURNS

Success: S_OK. pVarOut contains the converted value.

Failure: An HRESULT error code indicating the error.

NOTES

- Strictly speaking, this function performs a bitwise ones complement on the variants value (after possibly converting to VT_I4, see below). This only behaves like a boolean not operation if the value in pVarIn is either VARIANT_TRUE or VARIANT_FALSE and the type is signed.

- To perform a genuine not operation, convert the variant to a VT_BOOL before calling this function.

- This function does not process by-reference variants.

- The type of the value stored in pVarOut depends on the type of pVarIn, according to the following table:

 Input Type       Output Type

 ----------       -----------

 VT_EMPTY         VT_I2

 VT_R4            VT_I4

 VT_R8            VT_I4

 VT_BSTR          VT_I4

 VT_DECIMAL       VT_I4

 VT_CY            VT_I4

 (All others)     Unchanged

IMPLEMENTATION

Defined in "oleauto.h".

Implemented in "dlls/oleaut32/variant.c".

Debug channel "variant".