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    Reference for unit 'System': TypesΒΆ

    Type Description
    AnsiChar Alias for 1-byte sized char.
    Byte An unsigned 8-bits integer.
    Cardinal An unsigned 32-bits integer.
    Char Character type (1 byte).
    CodePointer Code pointer (8/16 bit targets).
    CodePointer Code pointer (8/16 bit targets).
    CodePtrInt Signed Integer with same size as CodePointer.
    CodePtrInt Signed Integer with same size as CodePointer.
    CodePtrUInt Unsigned Integer with same size as CodePointer.
    CodePtrUInt Unsigned Integer with same size as CodePointer.
    Comp Comp type.
    DWord An unsigned 32-bits integer.
    EnumResLangProc Callback for language resource enumeration.
    EnumResNameProc Callback for resource name enumeration.
    EnumResTypeProc Callback for resource type enumeration.
    FarPointer Far pointer (8/16 bit targets).
    FileRec Untyped file type.
    float32
    float64
    HGLOBAL Windows compatibility type for use in resources.
    HMODULE Windows compatibility type for use in resources.
    HRESULT 32-Bit signed integer.
    IInterface Basic interface for all COM based interfaces.
    Int128Rec
    Int16 A signed 16-bits integer.
    Int32 A signed 32-bits integer.
    Int64 64-bit, signed integer.
    Int8 A signed 8-bits integer.
    Integer A signed 16-bits integer.
    IntegerArray Generic array of integer.
    IntPtr A signed integer with the same size in bytes as pointer.
    jmp_buf Record type to store processor information.
    Longint A signed 32-bits integer.
    Longword An unsigned 32-bits integer.
    MAKEINTRESOURCE Alias for the PChar type.
    MarshaledAString Alias for PAnsiChar.
    MarshaledString Alias for PWideChar.
    NativeInt Alias for PtrInt.
    NativeUInt Alias for PtrUInt.
    OpaquePointer Type alias for POpaqueData.
    PAnsiChar Alias for PChar type.
    PAnsiString Pointer to an ansistring type.
    PBoolean Pointer to a Boolean type.
    PBoolean16 Pointer to Boolean16 type.
    PBoolean32 Pointer to Boolean32 type.
    PBoolean64 Pointer to Boolean64 type.
    PBoolean8 Pointer to Boolean8 type.
    PByte Pointer to byte type.
    PByteBool Pointer to ByteBool type.
    pcalldesc Pointer to TCallDesc record.
    PCardinal Pointer to Cardinal type.
    PChar Pointer to null-terminated string.
    PClass Pointer to TClass.
    PCodePointer Pointer to CodePointer.
    PCurrency Pointer to currency type.
    PDate Pointer to a TDateTime type.
    PDateTime Pointer to TDatetime.
    PDispatch Pointer to IDispatch interface type.
    pdispdesc Pointer to tdispdesc record.
    PDouble Pointer to double-sized float value.
    PDWord Pointer to DWord type.
    pdynarrayindex Pointer to tdynarrayindex type.
    pdynarraytypeinfo Pointer to TDynArrayTypeInfo type.
    PError Pointer to an Error type.
    PEventState Pointer to EventState, which is an opaque type.
    PExceptAddr Pointer to exception address record.
    PExceptObject Pointer to Exception handler procedural type TExceptProc.
    PExtended Pointer to extended-sized float value.
    PFileTextRecChar Pointer to TFileTextRecChar.
    PGUID Pointer to TGUID type.
    PInt16 Pointer to Int16 type.
    PInt32 Pointer to Int32 type.
    PInt64 Pointer to Int64 type.
    PInt8 Pointer to Int8 type.
    PInteger Pointer to integer type.
    PIntegerArray Pointer to IntegerArray type.
    PInterface Pointer to IInterface interface.
    pinterfaceentry Pointer to tinterfaceentry record.
    pinterfacetable Pointer to tinterfacetable record.
    PIntPtr Pointer to IntPtr type.
    PJmp_buf Pointer to jmp_buf record.
    PLongBool Pointer to a LongBool type.
    PLongint Pointer to Longint type.
    PLongWord Pointer to LongWord type.
    PMarshaledAString Pointer to PWideChar.
    PMarshaledString Pointer to PWideChar.
    PMemoryManager Pointer to TMemoryManager record.
    PMethod Pointer to method.
    PMsgStrTable Pointer to array of TMsgStrTable records.
    PNativeInt Pointer to NativeInt type.
    PNativeUInt Pointer to NativeInt type.
    PObjectVMT
    PointerArray Generic pointer array.
    POleVariant Pointer to OleVariant type.
    POpaqueData Pointer to unknown data.
    PPAnsiChar Alias for PPChar type.
    PPByte Pointer to PByte type.
    PPChar Pointer to an array of pointers to null-terminated strings.
    PPCharArray Pointer to TPCharArray type.
    PPCodePointer Pointer to PCodePointer.
    PPDispatch Pointer to PDispatch pointer type.
    PPDouble Pointer to PDouble type.
    ppdynarraytypeinfo Pointer to pdynarraytypeinfo.
    PPLongint Pointer to PLongint type.
    PPObjectVMT
    PPointer Pointer to a pointer type.
    PPointerArray Pointer to PointerArray type.
    PPPAnsiChar Pointer to PPAnsichar.
    PPPChar Pointer to PPChar.
    PPPointer Pointer to a PPointer type.
    PPPWideChar Pointer to PPWideChar type.
    PPtrInt Pointer to PtrInt type.
    PPtrUInt Pointer to unsigned integer of pointer size.
    PPUnknown Pointer to untyped pointer.
    PPVmt Pointer to PVMT pointer.
    PPWideChar Pointer to link id="PWideChar"> type.
    PQWord Pointer to QWord type.
    PQWordBool Pointer to QWordBool type.
    PRawByteString Pointer to RawByteString.
    PRTLCriticalSection Pointer to #rtl.system.TRTLCriticalSection type.
    PRTLEvent Pointer to RTLEvent, which is an opaque type.
    PShortInt Pointer to shortint type.
    PShortString Pointer to a shortstring type.
    PSingle Pointer to single-sized float value.
    PSizeInt Pointer to a SizeInt type.
    PSizeUInt Pointer to SizeUint.
    PSmallInt Pointer to smallint type.
    pstringmessagetable Pointer to TStringMessageTable record.
    PText Pointer to text file.
    PtrInt Signed integer type with same size as Pointer.
    PtrInt Signed integer type with same size as Pointer.
    PtrUInt Unsigned integer type with same size as Pointer.
    PtrUInt Unsigned integer type with same size as Pointer.
    PUCS2Char Pointer to UCS2Char character.
    PUCS4Char Pointer to UCS4Char.
    PUCS4CharArray Pointer to array of UCS4Char characters.
    PUInt16 Pointer to UInt16 type.
    PUInt32 Pointer to UInt32 type.
    PUInt64 Pointer to UInt64.
    PUInt8 Pointer to UInt8 type.
    PUintPtr Pointer to UIntPtr type.
    PUnicodeChar Pointer to Unicode character.
    PUnicodeString Pointer to unicodestring.
    PUnknown Untyped pointer.
    PUTF8Char Pointer to UTF8Char.
    PUTF8String Pointer to UTF8String.
    pvararray Pointer to TVarArray type.
    pvararraybound Pointer to tvararraybound type.
    pvararrayboundarray Pointer to tvararrayboundarray type.
    pvararraycoorarray Pointer to tvararraycoorarray type.
    pvardata Pointer to TVarData record.
    PVariant Pointer to Variant type.
    pvariantmanager Pointer to TVariantManager record.
    PVarRec Pointer to TVarRec type.
    PVmt Pointer to TVMT record.
    PWideChar Pointer to WChar.
    PWideString Pointer to widestring type.
    PWord Pointer to word type.
    PWordBool Pointer to a WordBool type.
    QWord 64-bit unsigned integer.
    RawByteString Single-byte character string without specified codepage.
    Real Alias for real type.
    Real48 TP compatible real type (6 bytes) definition.
    RTLString
    Shortint A signed 8-bits integer.
    SizeInt Signed integer type which fits for sizes.
    SizeInt Signed integer type which fits for sizes.
    SizeUInt Unsigned Integer type which fits for sizes.
    SizeUInt Unsigned Integer type which fits for sizes.
    Smallint A signed 16-bits integer.
    TAbstractErrorProc Abstract error handler procedural type.
    TAllocateThreadVarsHandler Threadvar allocation callback type for TThreadManager.
    TAnsiChar Alias for 1-byte sized char.
    TArray
    TAssertErrorProc Assert error handler procedural type.
    TBacktraceStrFunc Type for formatting of backtrace dump.
    TBasicEventCreateHandler callback type for creating eventstate in TThreadManager.
    TBasicEventHandler Generic callback type for handling eventstate in TThreadManager.
    TBasicEventWaitForHandler Wait for basic event callback type for TThreadManager.
    TBeginThreadHandler Callback for thread start in TThreadManager.
    TBoundArray Dynamic array of integer.
    tcalldesc COM/OLE dispatch call argument description.
    TClass Class of TObject.
    TCompareOption How to compare strings.
    TCompareOptions Set of TCompareOption.
    TCriticalSectionHandler Generic callback type for critical section handling in TThreadManager.
    TCriticalSectionHandlerTryEnter Function prototype for TryEnterCriticalsection.
    TCtrlBreakHandler CTRL-C Handler prototype.
    TDate Alias for TDateTime type.
    TDateTime Encoded Date-Time type.
    TDispatchMessage
    tdispdesc COM/OLE dispatch call description.
    TDoubleRec Extended value record.
    tdynarrayindex Type with the correct size for index into a dynamic array.
    tdynarraytypeinfo Type information for a dynamic array.
    TDynLibsManager Dynamic library loading support.
    TEndThreadHandler Callback for thread end in TThreadManager.
    TEntryInformation Executable entry point information structure.
    TEntryInformationOS Entry information for the OS.
    TEnumModuleFuncLW
    TError Error type, used in variants.
    TErrorProc Standard error handler procedural type.
    TExceptAddr Exception stack address descriptor.
    TExceptObject Exception object.
    TExceptProc Exception handler procedural type.
    TExitCode
    TExitCode
    TextBuf Text buffer.
    TExtended80Rec Extended value record.
    TextFile Alias for Text file type.
    TextRec Text file type.
    TFileTextRecChar Character type for the filename part in file records.
    TFloatSpecial Special floating point values.
    TFPCHeapStatus Record describing the state of the default FPC heap manager.
    TFPResourceHandle Handle to resource.
    TFPResourceHGLOBAL TFPResourceHGLOBAL.
    TFPResourceHMODULE Handle to module containing resource.
    TFPUException Type describing Floating Point processor exceptions.
    TFPUExceptionMask Set of TFPUException.
    TFPUPrecisionMode Type describing the default precision for Floating Point math.
    TFPURoundingMode How to round floating point values.
    TGetCurrentThreadIdHandler Callback type for retrieving thread ID in TThreadManager.
    TGetLoadErrorStrHandler Get last load error description string handler type.
    TGetProcAddressHandler Get procedure address handler type.
    TGetProcAddressOrdinalHandler Get procdure address by ordinal handler type.
    TGetSymbolByAddrHandler
    TGUID Standard GUID representation type.
    THandle Type alias.
    THeapStatus Record describing current heap status.
    TInitMultiThreadingHandler
    TInitThreadVarHandler Threadvar initialization callback type for TThreadManager.
    TInterfacedClass TObject descendent implementing the IInterface interface.
    tinterfaceentry Interfaces table entry.
    tinterfaceentrytype Dispatch interface entry type.
    tinterfacetable Record to store list of interfaces of a class.
    TInterfaceThunkClass
    TLibHandle Library handle type.
    TLineEndStr Line ending string type.
    TLoadLibraryAHandler >Load library (ansistring) handler type.
    TLoadLibraryUHandler Load library (unicode) handler type.
    TLocaleNameToCodePageCallBack
    TMemoryManager Record describing the current memory manager.
    TMethod Record describing a method.
    TMsgStrTable Record used in string message handler table.
    TNativeFPUControlWord
    TObjectVMT
    TOpaqueData Empty record.
    TOrdinalEntry Ordinal of entry point (windows only).
    TOSTimestamp
    TPCharArray Array of PChar.
    TProcedure Simple procedural type.
    TPtrWrapper
    TPtrWrapperArray
    TReleaseThreadVarsHandler Threadvar release callback type for TThreadManager.
    TRelocateThreadVarHandler Threadvar relocalization callback type for TThreadManager.
    TResourceHandle Handle to a resource, for use in the resource loading routines.
    TResourceManager Resource manager definition.
    TRTLCreateEventHandler Callback type for creating a TRTLEvent type in TThreadManager.
    TRTLCriticalSection A critical section.
    TRTLEventHandler Generic TRTLEvent handling type for TThreadManager.
    TRTLEventHandlerTimeout TRTLEvent timeout handling type for TThreadManager.
    trtlmethod Callback type for synchronization event.
    TRuntimeError Type of runtime-error for the Error procedure.
    TSafeCallErrorProc Prototype for the safecall error handler.
    TSemaphoreDestroyHandler Function prototype for destroying a semaphore.
    TSemaphorePostHandler Function prototype for posting an event to a semaphore.
    TSemaphoreWaitHandler Function prototype to wait on a semaphore.
    TSempahoreInitHandler Function prototype for initializing a semaphore.
    TSingleRec Extended value record.
    TStandardCodePageEnum Description of standard used codepages.
    TStringMessageTable String message table container for class.
    TSymbolAddressInfo
    TSystemCodePage System code page.
    TTextBuf Alias for TextBuf.
    TTextLineBreakStyle Text line break style. (end of line character).
    TThreadFunc Thread function prototype.
    TThreadGetPriorityHandler Callback type for thread priority getting in TThreadManager.
    TThreadHandle
    TThreadHandler Generic thread handler callback for TThreadManager.
    TThreadID Type for Thread-IDs.
    TThreadManager Thread manager record.
    TThreadSetPriorityHandler Callback type for thread priority setting in TThreadManager.
    TThreadSetThreadDebugNameHandlerA Set thread debug name callback prototype, AnsiString version.
    TThreadSetThreadDebugNameHandlerU Set thread debug name callback prototype, UnicodeString version.
    TThreadSwitchHandler Callback type for thread switch in TThreadManager.
    TTime Alias for TDateTime type.
    TTypeKind Type of a property or value.
    TUCS4CharArray Array of UCS4Char characters.
    TUnicodeStringManager Unicode string manager.
    TUnloadLibraryHandler Unload library handler type.
    tvararray Type describing variant array.
    tvararraybound Type describing variant array bounds.
    tvararrayboundarray array of tvararraybound records.
    tvararraycoorarray Array of variant array coordinates.
    tvardata Variant record.
    tvariantmanager Record describing the variant manager.
    tvarop Variant operation.
    TVarRec Record describing an element in an array of const.
    tvartype Type with size of variant type.
    TVisibilityClass
    TVisibilityClasses
    TVmt Virtual method table layout.
    TWaitForThreadTerminateHandler Callback type for thread termination in TThreadManager.
    TWideStringManager Record containing the various callbacks of the widestring manager.
    UCS2Char UCS2 Unicode character.
    UCS4Char UCS Unicode character (unsigned 32 bit word).
    UCS4String String of UCS4Char characters.
    UInt16 An unsigned 16-bits integer.
    UInt32 An unsigned 32-bits integer.
    UInt64 Unsigned 64-bit integer.
    UInt8 An unsigned 8-bits integer.
    UIntPtr An unsigned integer with the same size in bytes as pointer.
    UnicodeChar Unicode string character.
    UnicodeString A string consisting of widechars.
    UTF8Char Single byte character.
    UTF8String UTF-8 Unicode (Ansi) string.
    ValReal Largest available floating point type.
    ValSInt Val-Signed integer.
    ValSInt Val-Signed integer.
    ValUInt Val-unsigned integer.
    ValUInt Val-unsigned integer.
    WChar Wide char (16-bit sized char).
    WideChar The base two byte character type.
    WideString UTF-16 widechar encoded unicode string.
    Word An unsigned 16-bits integer.