SysUtils unit

DELPHI RTL Reference

Types:

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TFloatFormat type
An enumerated list of formatting codes for float functions.

TFormatSettings type
Defines a data structure containing locale information used by string formatting routine.

Procedures/Functions:

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Abort function
Terminates the current execution path without reporting an error.

AdjustLineBreaks function
Returns the string with all line breaks converted to true CR/LF sequences.

Beep procedure
Generates a conventional message beep.

BoolToStr function
Returns a string from a boolean value.

ChangeFileExt function
Changes the extension part of a string containing full path and file name.

CompareStr function
Compares two strings.

CompareText function
Compares two strings without case sensitivity.

CurrToStr function
Converts a currency value to a string.

Date function
Returns the current system date.

DateToStr function
Converts a TDateTime value to a string (date part only).

DateTimeToFileDate function
Converts a TDateTime value to a system timestamp value.

DateTimeToStr function
Converts a TDateTime value to a string (date and time).

DayOfWeek function
Returns the day of the week for a given date.

DecodeDate function
Separates Year, Month, and Day values from a TDateTime value.

DecodeTime procedure
Separates Hour, Minute, Second, and MilliSecond values from a TDateTime value.

DeleteFile function
Deletes a specified file.

DirectoryExists function
Returns True if a specified directory exists.

DiskFree function
Returns the amount of free space in bytes on a specified drive.

DiskSize function
Returns the size in bytes of a specified drive.

EncodeDate function
Creates a TDateTime value from Year, Month, and Day values.

EncodeTime function
Creates a TDateTime value from Hour, Min, Sec, and MSec. values.

ExcludeTrailingBackslash function
Removes '\' from the end of a string if it is there.

ExpandFileName function
Retrieves the full path and filename of a specified (relative) file.

ExpandUNCFileName function
Retrieves the full path and filename of a specified (relative) file using Universal Naming Convention for network files.

ExtractFileDir function
Returns only directory or drive information parts of a string containing full path and file name.

ExtractFileDrive function
Returns only drive part of a string containing full path and file name.

ExtractFileName function
Returns only file name and extension parts of a string containing full path and file name.

ExtractFileExt function
Returns the extension part of a string containing full path and file name.

ExtractFilePath function
Returns the drive and directory parts of a string containing full path and file name.

ExtractShortPathName function
Returns 8.3 format for a given full path and file name.

FileAge function
Returns the system time stamp of a file.

FileDateToDateTime function
Converts the system time stamp of a file to a TDateTime value

FileExists function
Checks whether a specified file exists.

FileGetAttr function
Retrieves the attributes of a specified file.

FileSetAttr function
Sets the attributes of a specified file.

FileSetReadOnly function
Sets the read-only status of the specified file.

FindCmdLineSwitch function
Returns True if a specified string was passed as a command line argument.

FloatToDateTime function
Returns a TDateTime value from a floating point value.

FloatToStr function
Returns a string from a floating point value.

FloatToStrF function
Returns a string from a floating point value, using a specified Format, Precision, and Digits.

FormatDateTime function
Formats a TDateTime value to a string.

FormatCurr function
Returns a string from a currency point value using the provided format string.

FormatFloat function
Returns a string from a floating point value using the provided format string.

GetCurrentDir function
Returns the name of the current directory.

GetLocaleFormatSettings procedure
Populates a TFormatSettings data structure based on the Windows locale ID.

IncludeTrailingBackslash function
Adds '\' to the end of a string if it is not already there.

IncMonth function
Adds or substracts a given number of months from a date value.

IntToHex function
Converts an integer to a string expresion - hex representation.

IntToStr function
Converts an integer to a string.

IsDelimiter function
Returns True if a specified character in a string matches one of a set of delimiters starting from some position.

IsPathDelimiter function
Returns true if a specified character in a string is the backslash (\) character.

IsLeapYear function
Returns True if a year specified is a leap year.

LastDelimiter function
Returns the index of the last occurence in a string of the characters cpecified.

LowerCase function
Returns a string that has been converted to lowercase.

Now function
Returns the current system date and time.

QuotedStr function
Returns the quoted version of a string.

RemoveDir function
Deletes an empty folder.

RenameFile function
Changes the name of a specified file.

SetCurrentDir function
Sets the current directory.

Sleep function
Pauses program execution for a specified number of microseconds.

StringReplace function
Returns a string in which a specified substring has been replaced with another substring.

StrToBool function
Returns a boolean from a string value, if *possible*.

StrToBoolDef function
Returns a boolean from a string value, on error returns "Default".

StrToFloat function
Returns a floating point value from a string.

StrToInt function
Converts a string to an integer.

Time function
Returns the current system time.

TimeToStr function
Converts a TDateTime value to a string (time part).

Trim function
Returns a string containing a copy of a specified string without both leading and trailing spaces and control characters.

TrimLeft function
Returns a string containing a copy of a specified string without leading spaces and control characters.

TrimRight function
Returns a string containing a copy of a specified string without trailing spaces and control characters.

TryStrToBool function
Converts a string to a boolean value with a Boolean success code.

TryStrToInt function
Converts a string to an integer, returns False if string does not represent a valid number.

UpperCase function
Returns a string that has been converted to uppercase.

WrapText function
Returns a string broken into multiple lines.