Type conversion routines

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This topic lists all type conversion routines included in the Delphi run-time library.

Miscellaneous routines

The following table lists all routines with no particular category used to convert a type to another:

Routine	Description
System.Classes.BinToHex	Converts a binary value into its hexadecimal representation.
System.Types.Bounds	Returns the Types.TRect for a rectangle of given dimensions.
System.Classes.HexToBin	Converts a string of hexadecimal digits to the corresponding binary value.
System.Types.Point	Creates a Types.TPoint structure from a pair of coordinates.
System.Types.Rect	Creates a Types.TRect structure from a set of coordinates.
System.Types.SmallPoint	Creates a Types.TSmallPoint structure from a pair of coordinates.

Type to Type conversion routines

The following table lists all routines used to convert a data type to another and back:

Routine	Reverse Routine	Description
System.Classes.BinToHex	System.Classes.HexToBin	Converts a binary value into its hexadecimal representation and a hexadecimal representation back to binary.
Data.FmtBcd.BCDToCurr	Data.FmtBcd.CurrToBCD	Converts a binary-coded decimal value (BCD) to the corresponding Currency value and back.
Data.FmtBcd.BcdToDouble	Data.FmtBcd.DoubleToBcd	Converts a binary-coded decimal value (BCD) to the corresponding double precision floating point value and back.
Data.FmtBcd.BcdToInteger	Data.FmtBcd.IntegerToBcd	Converts a binary-coded decimal value (BCD) to an integer and back.
System.CompToDouble	System.DoubleToComp	Converts a comp to a double value and back.

To String conversion

The following table lists all routines used to convert a data type into its string representation.

Routine	Description
Data.FmtBcd.BcdToStr, Data.FmtBcd.BcdToStrF	Returns a string representation of a binary-coded decimal (BCD) value.
System.SysUtils.BoolToStr	Converts a Boolean value to a string.
System.ConvUtils.ConvUnitToStr	Formats a measurement and its conversion unit into a human-readable string.
System.SysUtils.CurrToStr, System.SysUtils.CurrToStrF, System.SysUtils.FormatCurr	Formats a Currency value as a string.
System.SysUtils.DateTimeToStr, System.SysUtils.DateTimeToString, System.SysUtils.FormatDateTime	Converts a System.TDateTime value to a string.
System.SysUtils.DateToStr	Converts a System.TDate value to a string.
System.SysUtils.FloatToStr, System.SysUtils.FloatToStrF, System.SysUtils.FormatFloat, System.SysUtils.FloatToText, System.SysUtils.FloatToTextFmt	Converts a floating point value to a string.
System.SysUtils.IntToStr, System.SysUtils.IntToHex	Converts a 32 or 64-bit integer to a string.
System.SysUtils.TimeToStr	Converts a System.TDateTime value to a string.
System.SysUtils.UIntToStr	Converts an unsigned 32 or 64-bit integer to a string.
System.Str	Formats a string and returns it to a variable.

From String conversion

The following table lists all routines used to convert a string to a specific data type:

Routine	With Def. Value	Exception-less variant	Description
Data.FmtBcd.StrToBcd		Data.FmtBcd.TryStrToBcd	Converts a string to the corresponding binary-coded decimal (BCD) value.
System.SysUtils.StrToBool	System.SysUtils.StrToBoolDef	System.SysUtils.TryStrToBool	Converts a string to a Boolean value.
System.ConvUtils.StrToConvUnit		System.ConvUtils.TryStrToConvUnit	Parses a string into a value and conversion type.
System.SysUtils.StrToCurr	System.SysUtils.StrToCurrDef	System.SysUtils.TryStrToCurr	Converts a string to a Currency value.
System.SysUtils.StrToDate	System.SysUtils.StrToDateDef	System.SysUtils.TryStrToDate	Converts a string to a System.TDate value.
System.SysUtils.StrToDateTime	System.SysUtils.StrToDateTimeDef	System.SysUtils.TryStrToDateTime	Converts a string to a System.TDateTime value.
System.SysUtils.StrToFloat	System.SysUtils.StrToFloatDef	System.SysUtils.TryStrToFloat	Converts a given string to a floating-point value.
System.SysUtils.StrToInt	System.SysUtils.StrToIntDef	System.SysUtils.TryStrToInt	Converts a string that represents an integer (decimal or hex notation) to a number.
System.SysUtils.StrToInt64	System.SysUtils.StrToInt64Def	System.SysUtils.TryStrToInt64	Converts a string that represents an integer (decimal or hex notation) to a number.
System.SysUtils.StrToTime	System.SysUtils.StrToTimeDef	System.SysUtils.TryStrToTime	Converts a string to a System.TDateTime value.
Data.SqlTimSt.StrToSQLTimeStamp			Converts a string to a Data.SqlTimSt.TSQLTimeStamp value.
System.Val			Converts a string to a numeric representation.

See Also

• API Categories Index

Code Examples

• CompConversion (Delphi)