Delphi Basics : RTL By category : Procedures

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Unit	Procedure	Summary

SysUtils	Abort	Aborts the current processing with a silent exception
System	Append	Open a text file to allow appending of text to the end
SysUtils	AppendStr	Concatenate one string onto the end of another
System	Assign	Assigns a file handle to a binary or text file
System	AssignFile	Assigns a file handle to a binary or text file
Printers	AssignPrn	Treats the printer as a text file - an easy way of printing text
SysUtils	Beep	Make a beep sound
System	BlockRead	Reads a block of data records from an untyped binary file
System	BlockWrite	Writes a block of data records to an untyped binary file
System	Break	Forces a jump out of a single loop
System	ChDir	Change the working drive plus path for a specified drive
System	Close	Closes an open file
System	CloseFile	Closes an open file
System	Continue	Forces a jump to the next iteration of a loop
SysUtils	DateTimeToString	Rich formatting of a TDateTime variable into a string
System	Dec	Decrement an ordinal variable
SysUtils	DecodeDate	Extracts the year, month, day values from a TDateTime var.
DateUtils	DecodeDateTime	Breaks a TDateTime variable into its date/time parts
SysUtils	DecodeTime	Break a TDateTime value into individual time values
System	Delete	Delete a section of characters from a string
System	Dispose	Dispose of storage used by a pointer type variable
System	EndThread	Terminates a thread with an exit code
System	Erase	Erase a file
System	Exclude	Exclude a value in a set variable
System	Exit	Exit abruptly from a function or procedure
System	FillChar	Fills out a section of storage with a fill character or byte value
System	Flush	Flushes buffered text file data to the file
SysUtils	FreeAndNil	Free memory for an object and set it to nil
System	FreeMem	Free memory storage used by a variable
System	GetDir	Get the default directory (drive plus path) for a specified drive
SysUtils	GetLocaleFormatSettings	Gets locale values for thread-safe functions
System	Halt	Terminates the program with an optional dialog
System	Inc	Increment an ordinal variable
System	Include	Include a value in a set variable
System	Insert	Insert a string into another string
System	MkDir	Make a directory
System	Move	Copy bytes of data from a source to a destination
System	New	Create a new pointer type variable
FileCtrl	ProcessPath	Split a drive/path/filename string into its constituent parts
System	Randomize	Reposition the Random number generator next value
System	Read	Read data from a binary or text file
System	ReadLn	Read a complete line of data from a text file
System	ReallocMem	Reallocate an existing block of storage
System	Rename	Rename a file
SysUtils	ReplaceDate	Change only the date part of a TDateTime variable
SysUtils	ReplaceTime	Change only the time part of a TDateTime variable
System	Reset	Open a text file for reading, or binary file for read/write
System	ReWrite	Open a text or binary file for write access
System	RmDir	Remove a directory
System	RunError	Terminates the program with an error dialog
System	Seek	Move the pointer in a binary file to a new record position
System	SetLength	Changes the size of a string, or the size(s) of an array
System	SetString	Copies characters from a buffer into a string
Dialogs	ShowMessage	Display a string in a simple dialog with an OK button
Dialogs	ShowMessageFmt	Display formatted data in a simple dialog with an OK button
Dialogs	ShowMessagePos	Display a string in a simple dialog at a given screen position
System	Str	Converts an integer or floating point number to a string
System	Truncate	Truncates a file size - removes all data after the current position
System	Val	Converts number strings to integer and floating point values
System	Write	Write data to a binary or text file
System	WriteLn	Write a complete line of data to a text file

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