Variant Support Routines

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This topic lists all Variant support routines defined in the Delphi RTL.

Routine	Description
System.Variants.DynArrayFromVariant	Creates a dynamic array from a Variant.
System.Variants.DynArrayToVariant	Creates a Variant array from a dynamic array.
System.Variants.FindCustomVariantType	Retrieves the object that implements a custom Variant type.
System.Variants.FindVarData	Returns pointer to Variant's data.
System.Variants.HandleConversionException	Handles exceptions during Variant type conversions.
System.Variants.Null	Returns a System.Variants.Null Variant.
System.Variants.Unassigned	Returns an "empty" Variant.
System.Variants.VarArrayCreate	Creates a Variant array.
System.Variants.VarArrayCreateError	Indicates an array creation error.
System.Variants.VarArrayDimCount	Returns number of dimensions of a Variant array.
System.Variants.VarArrayGet	Returns a Variant that represents a single value from a multi-dimensional Variant array.
System.Variants.VarArrayHighBound	Returns high bound for a dimension in a Variant array.
System.Variants.VarArrayLock	Locks a Variant array and returns a pointer to the data.
System.Variants.VarArrayLowBound	Returns the low bound of a dimension in a Variant array.
System.Variants.VarArrayOf	Creates and fills a one-dimensional Variant array.
System.Variants.VarArrayPut	Sets the value of a single cell in a multi-dimensional Variant array.
System.VarArrayRedim	Resizes a Variant array.
System.Variants.VarArrayRef	Returns a reference to the specified Variant array.
System.Variants.VarArrayUnlock	Unlocks a Variant array.
System.VarCmplx.VarAsComplex	Casts an arbitrary Variant so that it is a custom Variant representing a complex number.
System.VarConv.VarAsConvert	Casts an arbitrary Variant so that it is a custom Variant representing a measurement.
System.Variants.VarAsError	Converts a HRESULT into an Error Variant.
System.Variants.VarAsType	Converts a Variant to specified type.
System.VarCast	Converts a variant to specified type.
System.Variants.VarCastError	Raises an System.Variants.EVariantTypeCastError exception.
System.Variants.VarCheckEmpty	Raises an exception if a specified Variant's value is System.Variants.Unassigned.
System.VarClear	Empties a Variant, so that it is unassigned.
System.VarCopy	Copies a Variant to another Variant.
System.Variants.VarCompareValue	Returns the relationship between Variants.
System.VarCmplx.VarComplex	Returns the Variant type code for custom Variants that represent complex numbers.
System.VarCmplx.VarComplexAbs	Returns the absolute value of a complex number.
System.VarCmplx.VarComplexAbsSqr	Returns the square of the absolute value of a complex number.
System.VarCmplx.VarComplexAngle	Returns the angle made by a complex number.
System.VarCmplx.VarComplexArcCos	Returns the inverse cosine of a complex number.
System.VarCmplx.VarComplexArcCosH	Returns the hyperbolic inverse cosine of a complex number.
System.VarCmplx.VarComplexArcCot	Returns the inverse cotangent of a complex number.
System.VarCmplx.VarComplexArcCotH	Returns the hyperbolic inverse cotangent of a complex number.
System.VarCmplx.VarComplexArcCsc	Returns the inverse cosecant of a complex number.
System.VarCmplx.VarComplexArcCscH	Returns the hyperbolic inverse cosecant of a complex number.
System.VarCmplx.VarComplexArcSec	Returns the inverse secant of a complex number.
System.VarCmplx.VarComplexArcSecH	Returns the hyperbolic inverse secant of a complex number.
System.VarCmplx.VarComplexArcSin	Returns the inverse sine of a complex number.
System.VarCmplx.VarComplexArcSinH	Returns the hyperbolic inverse sine of a complex number.
System.VarCmplx.VarComplexArcTan	Returns the inverse tangent of a complex number.
System.VarCmplx.VarComplexArcTanH	Returns the hyperbolic inverse tangent of a complex number.
System.VarCmplx.VarComplexConjugate	Returns the conjugate of a complex number.
System.VarCmplx.VarComplexCos	Returns the cosine of a complex number.
System.VarCmplx.VarComplexCosH	Returns the hyperbolic cosine of a complex number.
System.VarCmplx.VarComplexCot	Returns the cotangent of a complex number.
System.VarCmplx.VarComplexCotH	Returns the hyperbolic cotangent of a complex number.
System.VarCmplx.VarComplexCreate	Returns a custom Variant that represents a complex number.
System.VarCmplx.VarComplexCsc	Returns the cosecant of a complex number.
System.VarCmplx.VarComplexCscH	Returns the hyperbolic cosecant of a complex number.
System.VarCmplx.VarComplexExp	Returns the exponential of a complex number.
System.VarCmplx.VarComplexFromPolar	Converts a set of polar coordinates to a complex number.
System.VarCmplx.VarComplexInverse	Returns the inverse of a complex number.
System.VarCmplx.VarComplexLn	Returns the natural log of a complex number.
System.VarCmplx.VarComplexLog10	Returns the log base 10 of a complex number.
System.VarCmplx.VarComplexLog2	Returns the log base 2 of a complex number.
System.VarCmplx.VarComplexLogN	Returns the log base N of a complex number.
System.VarCmplx.VarComplexPower	Returns the value of a complex number raised to a specified power.
System.VarCmplx.VarComplexSec	Returns the secant of a complex number.
System.VarCmplx.VarComplexSecH	Returns the hyperbolic secant of a complex number.
System.VarCmplx.VarComplexSimplify	Reduces a Variant that represents a complex number to one that represents a real value, if possible.
System.VarCmplx.VarComplexSin	Returns the sine of a complex number.
System.VarCmplx.VarComplexSinH	Returns the hyperbolic sine of a complex number.
System.VarCmplx.VarComplexSqr	Returns the square of a complex number.
System.VarCmplx.VarComplexSqrt	Returns the square root of a complex number.
System.VarCmplx.VarComplexTan	Returns the tangent of a complex number.
System.VarCmplx.VarComplexTanH	Returns the hyperbolic tangent of a complex number.
System.VarCmplx.VarComplexTimesImaginary	Returns the value of a complex number multiplied by an imaginary number.
System.VarCmplx.VarComplexTimesNegI	Returns the value of a complex number multiplied by -i.
System.VarCmplx.VarComplexTimesPosI	Returns the value of a complex number multiplied by i.
System.VarCmplx.VarComplexTimesReal	Returns the value of a complex number multiplied by a real number.
System.VarCmplx.VarComplexToPolar	Computes the polar coordinates that correspond to a custom Variant that represents a complex number.
System.VarConv.VarConvert	Returns the variant type code for custom Variants that represent measurements.
System.VarConv.VarConvertCreate	Returns a custom Variant that represents a measurement.
System.Variants.VarCopyNoInd	Copies a Variant.
System.Variants.VarEnsureRange	Returns a Variant with a value in a specified range.
Data.FmtBcd.VarFMTBcd	Returns the TVarType constant that identifies the internal type of a Variant as a FMTBcd.TBcd value.
Data.FmtBcd.VarFMTBcdCreate	Creates a new Variant that stores its value internally as a FMTBcd.TBcd value.
System.Variants.VarFromDateTime	Returns a Variant containing a specified data and time.
System.Variants.VarInRange	Indicates whether a Variant's value is in a specified range.
System.Variants.VarInvalidNullOp	Indicate Variant operation on null.
System.Variants.VarInvalidOp	Indicate invalid Variant operation.
System.Variants.VarIsArray	Indicates whether the specified Variant is an array.
System.Variants.VarIsByRef	Indicates whether the specified Variant's value is by reference.
System.Variants.VarIsClear]	Indicates whether the specified Variant has an undefined value.
System.VarCmplx.VarIsComplex	Indicates whether a Variant stores its data internally as a complex number.
System.VarConv.VarIsConvert	Indicates whether a Variant is a custom Variant that represents a measurement.
System.Variants.VarIsCustom	Indicates whether the specified Variant is a custom Variant.
System.Variants.VarIsEmpty	Indicates whether the specified Variant is unassigned.
System.Variants.VarIsEmptyParam	Indicates whether the specified Variant represents an unassigned optional parameter.
System.Variants.VarIsError	Indicates whether the specified Variant is an error Variant; optionally converts Variant back to HRESULT.
Data.FmtBcd.VarIsFMTBcd	Indicates whether a specified Variant represents a FMTBcd.TBcd value.
System.Variants.VarIsFloat	Indicates whether the specified Variant represents a floating-point value.
System.Variants.VarIsNull	Indicates whether the specified Variant is System.Variants.Null.
System.Variants.VarIsNumeric	Indicates whether the specified Variant represents a numeric value.
System.Variants.VarIsOrdinal	Indicates whether the specified Variant represents an ordinal value.
System.Variants.VarIsStr	Indicates whether the specified Variant represents a string value.
System.Variants.VarIsType	Indicates whether the specified Variant represents a specified type.
System.Variants.VarOverflowError	Raises an System.Variants.EVariantOverflowError exception.
System.Variants.VarRangeCheckError	Raises an System.Variants.EVariantRangeCheckError exception.
System.Variants.VarResultCheck	Raises Variant exception based on HRESULT value.
System.Variants.VarSameValue	Indicates whether two Variants have equivalent values.
System.Variants.VarSupports	Indicates whether the Variant's value is an interface that supports a specified interface.
Data.FmtBcd.VarToBcd	Converts a Variant into a FMTBcd.TBcd type.
System.Variants.VarToDateTime	Converts a specified Variant to a TDateTime value.
System.Variants.VarToStr	Converts a Variant's value to a string.
System.Variants.VarToStrDef	Converts a Variant's value to a string.
System.Variants.VarToWideStr	Converts a Variant's value to a WideString.
System.Variants.VarToWideStrDef	Converts a Variant's value to a WideString.
System.Variants.VarType	Returns the type code of a specified Variant.
System.Variants.VarTypeAsText	Returns Variant type descriptive string.
System.Variants.VarTypeIsValidArrayType	Indicates whether a Variant type code represents a type that can be used for the elements in a Variant array.
System.Variants.VarTypeIsValidElementType	Indicates whether a Variant type code represents a type that can be used for the elements in a Variant array.
System.Internal.VarHlpr.VariantAdd	Adds two Variants.
System.Internal.VarHlpr.VariantAdd2	Adds two Variants.
System.Internal.VarHlpr.VariantAnd	Performs an and operation between two Variant values.
System.Internal.VarHlpr.VariantAnd2	Performs an and operation between two Variants.
System.Internal.VarHlpr.VariantArrayRedim	Resizes a Variant array.
System.Internal.VarHlpr.VariantCast	Performs a type-cast on a Variant.
System.Internal.VarHlpr.VariantClear	Empties a Variant, so that it is unassigned.
System.Internal.VarHlpr.VariantCpy	Copies a Variant.
System.Internal.VarHlpr.VariantDiv	Divides two Variants.
System.Internal.VarHlpr.VariantDiv2	Divides two Variants.
System.Internal.VarHlpr.VariantFromUnicodeString	Assigns an Unicode string to a Variant.
System.Internal.VarHlpr.VariantGetElement	Returns an element from a Variant array.
System.Internal.VarHlpr.VariantMod	Returns the remainder on division of two Variants.
System.Internal.VarHlpr.VariantMod2	Returns the remainder on division of two Variants.
System.Internal.VarHlpr.VariantMul	Multiplies two Variants.
System.Internal.VarHlpr.VariantMul2	Multiplies two Variants.
System.Internal.VarHlpr.VariantNeg	Inverts the sign of a Variant.
System.Internal.VarHlpr.VariantNot	Performs a not operation on a Variant.
System.Internal.VarHlpr.VariantOr	Performs an or operation between two Variants.
System.Internal.VarHlpr.VariantOr2	Performs an or operation between two Variants.
System.Internal.VarHlpr.VariantPutElement	Sets the value of an element in a Variant array.
System.Internal.VarHlpr.VariantShl	Performs an shl (shift left) operation between two Variants.
System.Internal.VarHlpr.VariantShl2	Performs an shl (shift left) operation between two Variants.
System.Internal.VarHlpr.VariantShr	Performs an shr (shift right) operation between two Variants.
System.Internal.VarHlpr.VariantShr2	Performs an shr (shift right) operation between two Variants.
System.Internal.VarHlpr.VariantSub	Subtracts two Variants.
System.Internal.VarHlpr.VariantSub2	Subtracts two Variants.
System.Internal.VarHlpr.VariantToUnicodeString	Converts a Variant to an Unicode string.
System.Internal.VarHlpr.VariantXor	Performs a xor (exclusive or) operation between two Variants.
System.Internal.VarHlpr.VariantXor2	Performs a xor (exclusive or) operation between two Variants.

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