Variants Namespace

This is namespace Variants.

Name	Description
Classes	The following table lists classes in this documentation.
Interfaces	The following table lists interfaces in this documentation.
Functions	The following table lists functions in this documentation.
Structs, Records, Enums	The following table lists structs, records, enums in this documentation.
Types	The following table lists types in this documentation.
Variables	The following table lists variables in this documentation.

Classes

	Name	Description
	EVariantArrayCreateError	EVariantArrayCreateError is the exception class for failure to create or resize a variant array.
	EVariantArrayLockedError	EVariantArrayLockedError is the exception class for errors that occur because a variant array is locked or fixed.
	EVariantBadIndexError	EVariantBadIndexError is the exception class for errors that occur because a variant array index is out of bounds.
	EVariantBadVarTypeError	EVariantBadVarTypeError is the exception class for variant type errors.
	EVariantDispatchError	EVariantDispatchError is the exception class for failed dispatch attempts.
	EVariantInvalidArgError	EVariantInvalidArgError is the exception class for operations that fail due to invalid variant data.
	EVariantInvalidNullOpError	EVariantInvalidNullOpError is the exception class for invalid Null variant operations.
	EVariantInvalidOpError	EVariantInvalidOpError is the exception class for invalid variant operations.
	EVariantNotAnArrayError	EVariantNotAnArrayError is the exception class inappropriate variant array operations.
	EVariantNotImplError	EVariantNotImplError is the exception class for unimplemented variant operations.
	EVariantOutOfMemoryError	EVariantOutOfMemoryError is the exception class for variant operations that cannot allocate necessary memory.
	EVariantOverflowError	EVariantOverflowError is the exception class for overflow in a variant operation.
	EVariantRangeCheckError	EVariantRangeCheckError is the exception class for out-of-range errors in a variant operation.
	EVariantTypeCastError	EVariantTypeCastError is the exception class for variant type cast errors.
	EVariantUnexpectedError	EVariantUnexpectedError is the exception class for unexpected variant errors.
	TCustomVariantType	TCustomVariantType is the base class for Delphi custom variant types.
	TInvokeableVariantType	TInvokeableVariantType is the base class for custom Variant types that implement custom Variants with properties and methods.

Functions

	Name	Description
	_DispInvoke	This is function Variants._DispInvoke.
	_OleVarFromInt	This is function Variants._OleVarFromInt.
	_OleVarFromInt64	This is function Variants._OleVarFromInt64.
	_OleVarFromLStr	This is function Variants._OleVarFromLStr.
	_OleVarFromPStr	This is function Variants._OleVarFromPStr.
	_OleVarFromVar	This is function Variants._OleVarFromVar.
	_VarAdd	This is function Variants._VarAdd.
	_VarAddRef	This is function Variants._VarAddRef.
	_VarAnd	This is function Variants._VarAnd.
	_VarArrayGet	This is function Variants._VarArrayGet.
	_VarArrayPut	This is function Variants._VarArrayPut.
	_VarArrayRedim	This is function Variants._VarArrayRedim.
	_VarCast	This is function Variants._VarCast.
	_VarCastOle	This is function Variants._VarCastOle.
	_VarClear	This is function Variants._VarClear.
	_VarClr	This is function Variants._VarClr.
	_VarCmpEQ	This is function Variants._VarCmpEQ.
	_VarCmpGE	This is function Variants._VarCmpGE.
	_VarCmpGT	This is function Variants._VarCmpGT.
	_VarCmpLE	This is function Variants._VarCmpLE.
	_VarCmpLT	This is function Variants._VarCmpLT.
	_VarCmpNE	This is function Variants._VarCmpNE.
	_VarCopy	This is function Variants._VarCopy.
	_VarCopyNoInd	This is function Variants._VarCopyNoInd.
	_VarDiv	This is function Variants._VarDiv.
	_VarFromBool	This is function Variants._VarFromBool.
	_VarFromCurr	This is function Variants._VarFromCurr.
	_VarFromDisp	This is function Variants._VarFromDisp.
	_VarFromDynArray	This is function Variants._VarFromDynArray.
	_VarFromInt	This is function Variants._VarFromInt.
	_VarFromInt64	This is function Variants._VarFromInt64.
	_VarFromIntf	This is function Variants._VarFromIntf.
	_VarFromLStr	This is function Variants._VarFromLStr.
	_VarFromPStr	This is function Variants._VarFromPStr.
	_VarFromReal	This is function Variants._VarFromReal.
	_VarFromTDateTime	This is function Variants._VarFromTDateTime.
	_VarFromWStr	This is function Variants._VarFromWStr.
	_VarMod	This is function Variants._VarMod.
	_VarMul	This is function Variants._VarMul.
	_VarNeg	This is function Variants._VarNeg.
	_VarNot	This is function Variants._VarNot.
	_VarOr	This is function Variants._VarOr.
	_VarRDiv	This is function Variants._VarRDiv.
	_VarShl	This is function Variants._VarShl.
	_VarShr	This is function Variants._VarShr.
	_VarSub	This is function Variants._VarSub.
	_VarToBool	This is function Variants._VarToBool.
	_VarToCurrency	This is function Variants._VarToCurrency.
	_VarToDisp	This is function Variants._VarToDisp.
	_VarToDynArray	This is function Variants._VarToDynArray.
	_VarToInt64	This is function Variants._VarToInt64.
	_VarToInteger	This is function Variants._VarToInteger.
	_VarToIntf	This is function Variants._VarToIntf.
	_VarToLStr	This is function Variants._VarToLStr.
	_VarToPStr	This is function Variants._VarToPStr.
	_VarToReal	This is function Variants._VarToReal.
	_VarToWStr	This is function Variants._VarToWStr.
	_VarXor	This is function Variants._VarXor.
	DynArrayFromVariant	Creates a dynamic array from a Variant.
	DynArrayToVariant	Creates a Variant array from a dynamic array.
	FindCustomVariantType	Retrieves the object that implements a custom Variant type.
	FindCustomVariantType	Retrieves the object that implements a custom Variant type.
	FindVarData	Returns pointer to variant's data.
	HandleConversionException	Handles exceptions during variant type conversions.
	Null	Returns a Null variant.
	Unassigned	Returns an "empty" variant.
	VarArrayAsPSafeArray	This is function Variants.VarArrayAsPSafeArray.
	VarArrayCreate	Creates a variant array.
	VarArrayCreateError	Indicates an array creation error.
	VarArrayDimCount	Returns number of dimensions of a variant array.
	VarArrayGet	Returns a Variant that represents a single value from a multi-dimensional Variant array.
	VarArrayHighBound	Returns high bound for a dimension in a variant array.
	VarArrayLock	Locks a variant array and returns a pointer to the data.
	VarArrayLowBound	Returns the low bound of a dimension in a variant array.
	VarArrayOf	Creates and fills a one-dimensional variant array.
	VarArrayPut	Sets the value of a single cell in a multi-dimensional Variant array.
	VarArrayRef	Returns a reference to the specified variant array.
	VarArrayUnlock	Unlocks a variant array.
	VarAsError	Converts a HRESULT into an Error variant.
	VarAsType	Converts a variant to specified type.
	VarCastError	Raises an EVariantTypeCastError exception.
	VarCastError	Raises an EVariantTypeCastError exception.
	VarCheckEmpty	Raises an exception if a specified variant's value is Unassigned.
	VarCompareValue	Returns the relationship between Variants.
	VarCopyNoInd	Copies a Variant.
	VarEnsureRange	Returns a Variant with a value in a specified range.
	VarFromDateTime	Returns a variant containing a specified data and time.
	VarInRange	Indicates whether a Variant's value is in a specified range.
	VarInvalidNullOp	Indicate variant operation on null.
	VarInvalidOp	Indicate invalid variant operation.
	VarIsArray	Indicates whether the specified variant is an array.
	VarIsArray	Indicates whether the specified variant is an array.
	VarIsByRef	Indicates whether the specified variant's value is by reference.
	VarIsClear	Indicates whether the specified variant has an undefined value.
	VarIsCustom	Indicates whether the specified variant is a custom variant.
	VarIsEmpty	Indicates whether the specified variant is unassigned.
	VarIsEmptyParam	Indicates whether the specified variant represents an unassigned optional parameter.
	VarIsError	Indicates whether the specified variant is an error variant; optionally converts variant back to HRESULT.
	VarIsError	Indicates whether the specified variant is an error variant; optionally converts variant back to HRESULT.
	VarIsFloat	Indicates whether the specified variant represents a floating-point value.
	VarIsNull	Indicates whether the specified variant is Null.
	VarIsNumeric	Indicates whether the specified variant represents a numeric value.
	VarIsOrdinal	Indicates whether the specified variant represents an ordinal value.
	VarIsStr	Indicates whether the specified variant represents a string value.
	VarIsType	Indicates whether the specified variant represents a specified type.
	VarIsType	Indicates whether the specified variant represents a specified type.
	VarOverflowError	Raises an EVariantOverflowError exception.
	VarRangeCheckError	Raises an EVariantRangeCheckError exception.
	VarResultCheck	Raises variant exception based on HRESULT value.
	VarResultCheck	Raises variant exception based on HRESULT value.
	VarSameValue	Indicates whether two Variants have equivalent values.
	VarSupports	Indicates whether the Variant's value is an interface that supports a specified interface.
	VarSupports	Indicates whether the Variant's value is an interface that supports a specified interface.
	VarToDateTime	Converts a specified variant to a TDateTime value.
	VarToStr	Converts a variant's value to a string.
	VarToStrDef	Converts a variant's value to a string.
	VarToWideStr	Converts a variant's value to a WideString.
	VarToWideStrDef	Converts a variant's value to a WideString.
	VarType	Returns the type code of a specified variant.
	VarTypeAsText	Returns variant type descriptive string.
	VarTypeIsValidArrayType	Indicates whether a Variant type code represents a type that can be used for the elements in a Variant array.
	VarTypeIsValidElementType	Indicates whether a Variant type code represents a type that can be used for the elements in a Variant array.

Interfaces

	Name	Description
	IVarInstanceReference	This is class Variants.IVarInstanceReference.
	IVarInvokeable	This is class Variants.IVarInvokeable.

Structs, Records, Enums

	Name	Description
	TBooleanToStringRule	TBooleanToStringRule enumerates possible rules for BooleanToStringRule.
	TNullCompareRule	TNullCompareRule enumerates possible rules for comparing variant nulls with other values.
	TVarCompareResult	This is record Variants.TVarCompareResult.
	TVariantRelationship	TVariantRelationship describes the results of comparing two Variants.

Types

Name	Description
TAnyProc	This is type Variants.TAnyProc.
TCustomVariantTypeClass	This is type Variants.TCustomVariantTypeClass.
TVarDataArray	This is type Variants.TVarDataArray.
TVarDispProc	This is type Variants.TVarDispProc.

Variables

Name	Description
BooleanToStringRule	Specifies rule fixing up Boolean values converted to strings.
ChangeAnyProc	This is variable Variants.ChangeAnyProc.
ClearAnyProc	This is variable Variants.ClearAnyProc.
EmptyParam	Contains an OleVariant that represents an unused optional parameter on a dual interface.
NullAsStringValue	Specifies string value of Null variants.
NullEqualityRule	Specifies rule for Null variant equality comparison.
NullMagnitudeRule	Specifies rule for Null variant magnitude comparison.
NullStrictConvert	Specifies whether Null conversion is an error.
OleVariantInt64AsDouble	This is variable Variants.OleVariantInt64AsDouble.
PackVarCreation	Specifies whether space-efficient Variant Types are preferred.
RefAnyProc	This is variable Variants.RefAnyProc.
VarDispProc	Provides the support for IDispatch-based Automation.

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