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 System::Variant types that implement custom Variants with properties and methods.

Functions

	Name	Description
	_DispInvoke	_DispInvoke is used internally by the Delphi compiler.
	_OleVarFromInt	_OleVarFromInt is used internally by the Delphi compiler.
	_OleVarFromInt64	_OleVarFromInt64 is used internally by the Delphi compiler.
	_OleVarFromLStr	_OleVarFromLStr is used internally by the Delphi compiler.
	_OleVarFromPStr	_OleVarFromPStr is used internally by the Delphi compiler.
	_OleVarFromUInt64	_OleVarFromUInt64 is used internally by the Delphi compiler.
	_OleVarFromUStr	_OleVarFromUStr is used internally by the Delphi compiler.
	_OleVarFromVar	_OleVarFromVar is used internally by the Delphi compiler.
	_VarAdd	_VarAdd is used internally by the Delphi compiler.
	_VarAddRef	_VarAddRef is used internally by the Delphi compiler.
	_VarAnd	_VarAnd is used internally by the Delphi compiler.
	_VarArrayGet	_VarArrayGet is used internally by the Delphi compiler.
	_VarArrayPut	_VarArrayPut is used internally by the Delphi compiler.
	_VarArrayRedim	_VarArrayRedim is used internally by the Delphi compiler.
	_VarCast	_VarCast is used internally by the Delphi compiler.
	_VarCastOle	_VarCastOle is used internally by the Delphi compiler.
	_VarClear	_VarClear is used internally by the Delphi compiler.
	_VarClr	_VarClr is used internally by the Delphi compiler.
	_VarCmpEQ	_VarCmpEQ is used internally by the Delphi compiler.
	_VarCmpGE	_VarCmpGE is used internally by the Delphi compiler.
	_VarCmpGT	_VarCmpGT is used internally by the Delphi compiler.
	_VarCmpLE	_VarCmpLE is used internally by the Delphi compiler.
	_VarCmpLT	_VarCmpLT is used internally by the Delphi compiler.
	_VarCmpNE	_VarCmpNE is used internally by the Delphi compiler.
	_VarCopy	_VarCopy is used internally by the Delphi compiler.
	_VarCopyNoInd	_VarCopyNoInd is used internally by the Delphi compiler.
	_VarDiv	_VarDiv is used internally by the Delphi compiler.
	_VarFromBool	_VarFromBool is used internally by the Delphi compiler.
	_VarFromCurr	_VarFromCurr is used internally by the Delphi compiler.
	_VarFromDisp	_VarFromDisp is used internally by the Delphi compiler.
	_VarFromDynArray	_VarFromDynArray is used internally by the Delphi compiler.
	_VarFromInt	_VarFromInt is used internally by the Delphi compiler.
	_VarFromInt64	_VarFromInt64 is used internally by the Delphi compiler.
	_VarFromIntf	_VarFromIntf is used internally by the Delphi compiler.
	_VarFromLStr	_VarFromLStr is used internally by the Delphi compiler.
	_VarFromPStr	_VarFromPStr is used internally by the Delphi compiler.
	_VarFromReal	_VarFromReal is used internally by the Delphi compiler.
	_VarFromTDateTime	_VarFromTDateTime is used internally by the Delphi compiler.
	_VarFromUInt64	_VarFromUInt64 is used internally by the Delphi compiler.
	_VarFromUStr	_VarFromUStr is used internally by the Delphi compiler.
	_VarFromWChar	_VarFromWChar is used internally by the Delphi compiler.
	_VarFromWStr	_VarFromWStr is used internally by the Delphi compiler.
	_VarMod	_VarMod is used internally by the Delphi compiler.
	_VarMul	_VarMul is used internally by the Delphi compiler.
	_VarNeg	_VarNeg is used internally by the Delphi compiler.
	_VarNot	_VarNot is used internally by the Delphi compiler.
	_VarOr	_VarOr is used internally by the Delphi compiler.
	_VarRDiv	_VarRDiv is used internally by the Delphi compiler.
	_VarShl	_VarShl is used internally by the Delphi compiler.
	_VarShr	_VarShr is used internally by the Delphi compiler.
	_VarSub	_VarSub is used internally by the Delphi compiler.
	_VarToBool	_VarToBool is used internally by the Delphi compiler.
	_VarToCurrency	_VarToCurrency is used internally by the Delphi compiler.
	_VarToDisp	_VarToDisp is used internally by the Delphi compiler.
	_VarToDynArray	_VarToDynArray is used internally by the Delphi compiler.
	_VarToInt64	_VarToInt64 is used internally by the Delphi compiler.
	_VarToInteger	_VarToInteger is used internally by the Delphi compiler.
	_VarToIntf	_VarToIntf is used internally by the Delphi compiler.
	_VarToLStr	_VarToLStr is used internally by the Delphi compiler.
	_VarToPStr	_VarToPStr is used internally by the Delphi compiler.
	_VarToReal	_VarToReal is used internally by the Delphi compiler.
	_VarToUInt64	_VarToUInt64 is used internally by the Delphi compiler.
	_VarToUStr	_VarToUStr is used internally by the Delphi compiler.
	_VarToWStr	_VarToWStr is used internally by the Delphi compiler.
	_VarXor	_VarXor is used internally by the Delphi compiler.
	DynArrayFromVariant	Creates a dynamic array from a System::Variant.
	DynArrayToVariant	Creates a System::Variant array from a dynamic array.
	FindCustomVariantType	Retrieves the object that implements a custom System::Variant type.
	FindCustomVariantType	Retrieves the object that implements a custom System::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 System::Variant that represents a single value from a multi-dimensional System::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 System::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 System::Variant.
	VarEnsureRange	Returns a System::Variant with a value in a specified range.
	VarFromDateTime	Returns a variant containing a specified data and time.
	VarInRange	Indicates whether a System::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 System::Variant's value is an interface that supports a specified interface.
	VarSupports	Indicates whether the System::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 System::Variant type code represents a type that can be used for the elements in a System::Variant array.
	VarTypeIsValidElementType	Indicates whether a System::Variant type code represents a type that can be used for the elements in a System::Variant array.

Interfaces

	Name	Description
	IVarInstanceReference	IVarInstanceReference is the interface for extracting the instance that represents the data from a Variant of the custom type.
	IVarInvokeable	IVarInvokeable is the interface for custom Variant types that implement dynamic properties and methods.

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	TVarCompareResult describes the results of comparing two Variants.
	TVariantRelationship	TVariantRelationship describes the results of comparing two Variants.

Types

Name	Description
TAnyProc	TAnyProc represents a pointer to a procedure that accepts a parameter of type TVarData.
TCustomVariantTypeClass	TCustomVariantTypeClass defines the metaclass for TCustomVariantType.
TVarDataArray	TVarDataArray is an array of TVarData records.
TVarDispProc	TVarDispProc defines a pointer to a procedure used as support for IDispatch-based Automation.

Variables

Name	Description
BooleanToStringRule	Specifies rule fixing up Boolean values converted to strings.
ChangeAnyProc	Provides the support for changing the type of a Variant from varAny to a real Variant.
ClearAnyProc	Provides the support for clearing a Variant of type varAny.
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	Controls the mode in which Int64 values are stored in a OleVariant.
PackVarCreation	Specifies whether space-efficient System::Variant Types are preferred.
RefAnyProc	Provides the support for increasing the reference count of a Variant of type varAny.
VarDispProc	Provides the support for IDispatch-based Automation.

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