Reference for unit 'System': Constants

AbstractErrorProc

Custom abstract error handling procedure

AllFilesMask

File mask for all files on the current platform

AllowDirectorySeparators

Set of characters considered directory separators

AllowDriveSeparators

Set of characters considered drive separators

AssertErrorProc

Custom assert error handling procedure

BacktraceStrFunc

Standard backtrace formatting routine

CatchAllExceptions

Mask indicating all exception kinds

cExceptionFrame

Indicator of except frame on the exception frame stack

cFinalizeFrame

Indicator of finally frame on the exception frame stack

CP_ACP

ANSI code page identifier

CP_ASCII

US-ASCII code page identifier

CP_NONE

No known code page

CP_OEMCP

OEM code page identifier

CP_UTF16

UTF-16 code page identifier

CP_UTF16BE

Big-endian UTF-16 code page identifier

CP_UTF7

UTF-7 code page identifier

CP_UTF8

UTF-8 code page identifier

CtrlZMarksEOF

Determine whether CTRL-Z marks the end of file.

DefaultStackSize

Default size for a new thread's stack (4MiB by default).

DefaultTextLineBreakStyle

Default line ending style.

DirectorySeparator

Character used to separate directory parts.

DriveSeparator

Character used to separate directory parts.

ErrorAddr

Address where the last error occurred.

ErrorCode

Last error code.

ErrorProc

Custom error handling procedure.

ExceptClsProc

Callback used to determine the exception class for an OS exception

ExceptObjProc

Callback used to convert OS exceptions to FPC exceptions

ExceptProc

Current exception handling procedure.

ExitProc

Exit procedure pointer.

ExtensionSeparator

Character which separates the filename from the file extension.

E_NOINTERFACE

Interface call result: Error: not an interface

E_NOTIMPL

Interface call result: Interface not implemented

E_UNEXPECTED

Interface call result: Unexpected error

FileMode

Default file mode for untyped files.

FileNameCasePreserving

OS preserves case in filenames when creating or renaming entries.

FileNameCaseSensitive

OS treatment of filenames is case sensitive.

filerecnamelength

Maximum filename size

float_flag_denormal

IEC/IEEE floating-point exception flag: ?

float_flag_divbyzero

IEC/IEEE floating-point exception flag: Division by zero error

float_flag_inexact

IEC/IEEE floating-point exception flag: ?

float_flag_invalid

IEC/IEEE floating-point exception flag: Invalid operation error

float_flag_overflow

IEC/IEEE floating-point exception flag: Overflow error

float_flag_underflow

IEC/IEEE floating-point exception flag: Underflow error

float_round_down

Round down

float_round_nearest_even

Round to nearest even number

float_round_to_zero

Round in the direction of zero (down for positive, up for negative)

float_round_up

Round up

fmAppend

File mode: File is open for writing, appending to the end.

fmClosed

File mode: File is closed.

fmInOut

File mode: File is open for reading and writing.

fmInput

File mode: File is open for reading.

fmOutput

File mode: File is open for writing.

FPC_EXCEPTION

Type of exception: Free pascal exception

growheapsize1

Grow rate for block less than 256 Kb.

growheapsize2

Grow rate for block larger than 256 Kb.

growheapsizesmall

Fixed size small blocks grow rate

has_mmx_support

CPU has mmx support

has_sse2_support

CPU has sse2 support?

has_sse3_support

CPU has sse3 support?

has_sse_support

CPU has SSE support ?

InitProc

Initialization routine

IObjectInstance

GUID for the IObject interface

IsMultiThread

Indicates whether more than one thread is running in the application.

LFNSupport

Constant describing support for long filenames.

LineEnding

Constant describing the current line ending character.

maxExitCode

Maximum exit code supported by the operating system.

MaxInt

Maximum integer value.

MaxKeptOSChunks

Maximum number of OS chunks to be kept in memory

MaxLongint

Maximum longint value.

MaxPathLen

Constant defining the maximum length of filenames (including path)

MaxSIntValue

Maximum String-size value.

MaxSmallint

Maximum smallint value.

MaxUIntValue

Maximum unsigned integer value.

Max_Frame_Dump

Maximum number of frames to show in error frame dump.

ModuleIsCpp

program compiled by CPP ?

ModuleIsLib

Determines whether the current module is a library

ModuleIsPackage

Determines whether the current module is a package

NilHandle

Correctly typed Nil handle - returned on error by LoadLibrary

PathSeparator

Character used to separate paths in a search list

RaiseMaxFrameCount

Maximum number of frames to include in TExceptObject

RaiseProc

Procedure to raise an exception.

RT_ACCELERATOR

Constant identifying an accelerator resource

RT_ANICURSOR

Resource type: Animated cursor

RT_ANIICON

Resource type: Animated icon

RT_BITMAP

Constant identifying a bitmap resource

RT_CURSOR

Constant identifying a cursor resource

RT_DIALOG

Constant identifying a dialog resource

RT_FONT

Constant identifying a font resource

RT_FONTDIR

Constant identifying a font directory resource

RT_GROUP_CURSOR

Constant identifying a group cursor resource

RT_GROUP_ICON

Constant identifying a group icon resource

RT_HTML

Resource type: HTML data

RT_ICON

Constant identifying an icon resource

RT_MANIFEST

Resource type: manifest

RT_MENU

Constant identifying a menu resource

RT_MESSAGETABLE

Constant identifying a message data resource

RT_RCDATA

Constant identifying a binary data resource

RT_STRING

Constant identifying a string table resource

RT_VERSION

Constant identifying a version info resource

RuntimeErrorExitCodes

Mapping between runtime-error constants and program exit codes

SafeCallErrorProc

Error handler for safecall errors

SharedSuffix

Shared library suffix for the current platform

sLineBreak

Alias for LineEnding

StackError

Indicate whether there was a stack error.

StdErrorHandle

Value of the OS handle for the standard error-output file.

StdInputHandle

Value of the OS handle for the standard input file.

StdOutputHandle

Value of the OS handle for the standard output file.

S_FALSE

Interface call result: Not OK

S_OK

Interface call result: OK

Test8086

8086 or older ?

Test8087

8087 floating point CPU or not ?

TextRecBufSize

Default buffer size for text files

TextRecNameLength

maximum filename size for text files.

ThreadingAlreadyUsed

Internal constant for the threading system. Don't use.

tkAnsiChar

tkChar alias

tkAnsiString

alias for tkAString

tkShortString

Alias for tkSString

tkUnicodeString

Alias for tkUString

tkWideChar

Alias for tkUchar

tkWideString

Alias for tkWString

UnusedHandle

Value indicating an unused file handle (as reported by the OS).

VarAddRefProc

Callback to increase reference count of a variant.

varany

Variant type: Any

vararray

Variant type: variant Array

varboolean

Variant type: Boolean type

varbyref

Variant type: By reference

varbyte

Variant type: Byte (8 bit)

VarClearProc

Callback to clear a variant.

VarCopyProc

Callback to copy a variant

varcurrency

Variant type: Currency

vardate

Variant type: Date

vardecimal

Variant type: Decimal (BCD)

vardispatch

Variant type: dispatch interface

vardouble

Variant type: Double float

varempty

Variant type: Empty variant

varerror

Variant type: Error type

varint64

Variant type: Integer (64-Bit)

varinteger

Variant type: Integer (32-bit)

varlongword

Variant type: Word (32 bit)

varnull

Variant type: Null variant

varolestr

Variant type: OLE string (widestring)

varqword

Variant type: Word (64-bit)

varrecord

Record variant type

varshortint

Variant type: Shortint (16 bit)

varsingle

Variant type: Single float

varsmallint

Variant type: smallint (8 bit)

varstrarg

Variant type: String

varstring

Variant type: String

VarToLStrProc

Callback to convert a variant to a ansistring.

VarToWStrProc

Callback to convert a variant to a widestring.

vartypemask

Variant type: Mask to extract type

varuint64

Unsigned 64-bit value in a variant

varunknown

Variant type: Unknown

varustrarg

Unicode string argument value

varustring

Unicode string value in Variant

varvariant

Variant type: Variant (arrays only)

varword

Variant type: Word (16 bit)

varword64

Variant type: Word (64-bit)

vmtAfterConstruction

VMT Layout: ?

vmtAutoTable

VMT layout: ?

vmtBeforeDestruction

VMT Layout: ?

vmtClassName

VMT Layout: location of class name.

vmtDefaultHandler

VMT Layout: ?

vmtDefaultHandlerStr

VMT Layout: ?

vmtDestroy

VMT Layout: Location of destructor pointer.

vmtDispatch

Offset to dispatch table

vmtDispatchStr

Offset to string dispatch table

vmtDynamicTable

VMT Layout: location of dynamic methods table.

vmtEquals

Offset to the Equals method pointer

vmtFieldTable

VMT Layout: Location of fields table.

vmtFreeInstance

VMT Layout: location of FreeInstance method.

vmtGetHashCode

Offset to the GetHashCode method pointer

vmtInitTable

VMT Layout: ?

vmtInstanceSize

VMT Layout: Location of class instance size in VMT

vmtIntfTable

VMT layout: Interface table

vmtMethodStart

VMT layout: start of method table.

vmtMethodTable

VMT Layout: Method table start.

vmtMsgStrPtr

VMT layout: message strings table.

vmtNewInstance

VMT Layout: location of NewInstance method.

vmtParent

VMT Layout: location of pointer to parent VMT.

vmtSafeCallException

VMT Layout: ?

vmtToString

Offset to the ToString method pointer

vmtTypeInfo

VMT Layout: Location of class type information.

vtAnsiString

TVarRec type: Ansistring

vtBoolean

TVarRec type: Boolean

vtChar

TVarRec type: Char

vtClass

TVarRec type: Class type

vtCurrency

TVarRec type: Currency

vtExtended

TVarRec type: Extended

vtInt64

TVarRec type: Int64 (signed 64-bit integer)

vtInteger

TVarRec type: Integer

vtInterface

TVarRec type: Interface

vtObject

TVarRec type: Object instance

vtPChar

TVarRec type: PChar

vtPointer

TVarRec type: pointer

vtPWideChar

TVarRec type: PWideChar

vtQWord

TVarRec type: QWord (unsigned 64-bit integer)

vtString

TVarRec type: String

vtUnicodeString

Unicode string argument

vtVariant

TVarRec type: Variant

vtWideChar

TVarRec type: Widechar

vtWideString

TVarRec type: WideString