System.Classes
From RAD Studio API Documentation
| Package | rtl250.bpl |
|---|
Contents
Classes
ComponentPlatformsAttribute ComponentPlatformsAttribute provides platform-specific run-time information.
EBitsError EBitsError is the exception class for invalid attempts to access an array of Boolean values.
EClassNotFound EClassNotFound is the exception class for the failure to find a specified component when reading from a stream.
EComponentError EComponentError is the exception class for registering and renaming components.
EFCreateError EFCreateError is the exception class for streaming file-creation errors.
EFilerError EFilerError is the exception class for component stream errors.
EFileStreamError EFileStreamError is the exception class for general stream errors.
EFOpenError EFOpenError is the exception class for file-opening errors during streaming.
EInvalidImage EInvalidImage is the exception class for unsuccessful attempts to read resources.
EInvalidOperation EInvalidOperation is the exception class for invalid operations on a component.
EListError EListError is the exception class for list and string errors.
ELoginCredentialError ELoginCredentialError is the exception class for handling invalid login credentials.
EMethodNotFound Deprecated, please use EReadError.
EOutOfResources EOutOfResources is the exception class for unsuccessful attempts to allocate handles.
EParserError EParserError is the exception class for text-to-binary streaming conversion errors.
EReadError EReadError is the exception class for unsuccessful attempts to read data from a stream.
EResNotFound EResNotFound is the exception class for resources that were not found.
EStreamError EStreamError is the exception class for streaming errors.
EStringListError EStringListError is the exception class for invalid listbox references.
EThreadExternalException EThreadExternalException is the exception class for methods called from external threads.
EWriteError EWriteError is the exception class for unsuccessful attempts to write data to a stream.
IControlValueObserver Interface for value changing observers.
IDesignerNotify IDesignerNotify is the interface for responding to notifications about changes to components in the designer.
IEditGridLinkObserver Interface for IEditLinkObserver.
IEditLinkObserver Interface for link managing observers.
IInterfaceComponentReference IInterfaceComponentReference is the interface for responding to requests for retrieving components.
IInterfaceList IInterfaceList provides access to a list of interfaces.
IInterfaceListEx IInterfaceListEx provides access to a list of interfaces.
IMultiCastObserver Multiple cast interface for IObserver.
IObserver Interface that implements an observer pattern that is used in order
to get notifications on certain UI (user interface) changes of controls such as an edit box or a label.
IObserverTrack Interface used for tracking notifications.
IPositionLinkObserver Interface for position changing notifications.
ISingleCastObserver Single cast interface for IObserver.
IStreamPersist IStreamPersist is the interface for responding to requests to load/save an object from/to a persistent stream.
IStringsAdapter Maintains a link between TStrings and IStrings implementations.
IVarStreamable IVarStreamable is the interface for loading and saving the values of Variants.
IVCLComObject Interface used for getting information from VCL objects.
TBaseAsyncResult Base class for implementing all asynchronous procedure calls.
TBasicAction TBasicAction is the ancestor class for all action objects.
TBasicActionLink TBasicActionLink is the base class for action link classes that handle the communication between actions and clients.
TBinaryReader TBinaryReader reads data as binary values.
TBinaryWriter TBinaryWriter writes data as binary values.
TBytesStream TBytesStream is a stream that stores its data in bytes.
TClassFinder TClassFinder allows registered persistent classes to be retrieved.
TCollectionItem TCollectionItem represents an item in a collection.
TCollectionItemClass TCollectionItemClass defines the metaclass for TCollectionItem.
TComponent TComponent is the common ancestor of all component classes.
TComponentClass TComponentClass defines the metaclass for TComponent.
TComponentEnumerator TComponentEnumerator allows the components within a containing component to be discovered.
TCustomMemoryStream TCustomMemoryStream is an abstract base class used as the common ancestor for memory streams.
TDataModule TDataModule centralizes the handling of nonvisual components in an application.
TDefaultAttributeBase TDefaultAttributeBase is a base class for default attributes.
TFiler TFiler is the abstract base class for reader and writer objects, which are used for loading and saving components and their properties.
TFileStream TFileStream enables applications to read from and write to a file on disk.
THandleStream THandleStream enables applications to read from and write to communications resources identified by a handle.
TInterfacedPersistent TInterfacedPersistent is an ancestor for persistent objects that implement interfaces.
TInterfaceList TInterfaceList represents a list of interfaces.
TLinkObservers Interface used for link notifications.
TListEnumerator Enumerates through the objects in a TList.
TLoginCredentialService TLoginCredentialService provides functionality for login action, regardless of framework.
TMemoryStream TMemoryStream is a stream that stores its data in dynamic memory.
TObservers TObservers implements an observer pattern that is used in order to get notifications on certain UI (user interface) changes of controls such as an edit box or a label, while using LiveBindings.
TOwnedCollection TOwnedCollection is a collection that maintains information about its owner.
TParser TParser allows DFM files to be parsed.
TPersistent TPersistent is the ancestor for all objects that have assignment and streaming capabilities.
TRecall TRecall stores the properties of a persistent object so that they can be restored at a later time.
TResourceStream TResourceStream is a memory stream that provides access to the compiled resources in an application.
TStream TStream is the base class type for stream objects that can read from or write to various kinds of storage media, such as disk files, dynamic memory, and so on.
TStreamReader Character stream reader.
TStreamWriter Writer for characters to stream.
TStringList TStringList maintains a list of strings.
TStringReader Reader for a string.
TStringsEnumerator Enumerates through the strings of a TStrings object.
TStringStream TStringStream provides file-like access to information stored as a long string.
TStringWriter Writer for a string.
TTextReader Reader for sequence of characters.
TTextWriter Writer of sequence of characters.
TThread TThread is an abstract class that enables creation of separate threads of execution in an application.
TThreadList TThreadList represents a thread-safe list.
Routines
ActivateClassGroup Activates a group of classes that derive from TPersistent.
ActiveClassGroup Activates a group of classes that derive from TPersistent.
AllocateHWnd Creates a window that implements a specified window procedure.
AncestorIsValid AncestorIsValid determines if one component is an ancestor of another.
BinToHex Converts a binary value into a string that is its hexadecimal representation.
Bounds Creates a TRect structure from the top-left coordinate, and width and height values of a rectangle.
CheckSynchronize Allows background threads to synchronize their execution with the main thread.
ClassGroupOf Returns the group of persistent classes a specified class or instance belongs to.
CollectionsEqual Compares the contents of two collections.
CountGenerations Returns the number of intermediate classes between a derived class and its ancestor.
DeallocateHWnd Frees a window that was created using AllocateHWnd.
ExtractStrings Fills a string list with substrings parsed from a delimited list.
FindClass Finds and returns a class that is derived from TPersistent.
FindGlobalComponent Returns a top-level container component.
FindIdentToInt Returns the TIdentToInt conversion routine for a given data type.
FindIntToIdent Returns the TIntToIdent conversion routine for a given data type.
FindNestedComponent FindNestedComponent returns a component contained within another.
FreeObjectInstance Frees a block of memory that was allocated by the MakeObjectInstance.
GetClass Returns a registered persistent class given its name.
GetUltimateOwner Returns the top-level owner of a specified persistent object.
GroupDescendentsWith Adds a specified class to the group in which another class appears.
HexToBin Converts a string of hexadecimal digits to the corresponding binary value.
IdentToInt Uses a mapping array to convert string identifiers into their corresponding integer values.
InitInheritedComponent Initializes streaming of a form file for an inherited root class.
IntToIdent Uses a mapping array to convert integers into their corresponding string identifiers.
InvalidPoint Indicates whether a specified point is equal to (-1,-1).
IsUniqueGlobalComponentName Indicates whether a proposed component name is unambiguous.
LineStart Finds the end of the last whole line in a buffer.
MakeObjectInstance Allocates a block of memory to be used by an instance of a class.
ObjectBinaryToText Converts the binary representation of an object into more readily understandable text.
ObjectResourceToText Converts the binary representation of an object resource into more readily understandable text.
ObjectTextToBinary Converts a symbolic text representation of an object into the binary version that is used to save the object to files or memory streams.
ObjectTextToResource Converts a symbolic text representation of an object into an internal binary representation.
PointsEqual Indicates whether two points have the same coordinates.
ReadComponentRes Reads components and their properties from a specified resource.
ReadComponentResEx Reads a component from a resource.
ReadComponentResFile Reads components and their properties from a specified Windows resource file.
RegisterClass Registers a class of persistent object so that its class type can be retrieved.
RegisterClassAlias Registers a class that is identical to another class except for the name.
RegisterClasses Registers a set of classes.
RegisterComponents Registers the
ComponentClasses components so that they all appear on the same Page of the Tool Palette. RegisterFindGlobalComponentProc Used for registering component finding functions.
RegisterIntegerConsts Registers conversion functions for string identifiers that represent type values.
RegisterNoIcon Registers a set of components but does not add them to the component palette.
RegisterNonActiveX Prevents a set of components from being made available to the ActiveX wizard.
SmallPoint Creates a TSmallPoint structure from a pair of coordinates.
StartClassGroup Starts a class group derived from TPersistent.
TestStreamFormat Identifies the format of a form file when reading it from a stream.
UnRegisterClass Unregisters an object class.
UnRegisterClasses Unregisters a set of classes.
UnregisterFindGlobalComponentProc Used for unregistering component finding functions.
UnregisterIntegerConsts Unregisters conversion functions for string identifiers that represent type values.
UnRegisterModuleClasses Unregisters all classes defined in a specified module.
WriteComponentResFile Writes components and their properties to a file using a resource file format.
Types
PStringItem PStringItem is a TStringItem pointer.
PStringItemList PStringItemList is a TStringItemList pointer.
TActionEvent TActionEvent is the method pointer type used to define updating and execution events of actions.
TActiveXRegType TActiveXRegType is used when excluding a component class from the ActiveX Wizard.
TAlignment TAlignment specifies how text is aligned within a control.
TAncestorNotFoundEvent TAncestorNotFoundEvent is a procedure called by the TReader class OnAncestorNotFound event.
TCollectionNotification TCollectionNotification indicates the type of change that is made to the items in a collection.
TComponentName TComponentName is the type for the Name property of all components.
TComponentState TComponentState is a set of flags that describe the current state of a component.
TComponentStyle TComponentStyle is a set of flags that describe the current Style of a component.
TCreateComponentEvent TCreateComponentEvent is a type of procedure called by the TReader class OnCreateComponent event.
TDuplicates TDuplicates indicates the response when an application attempts to add a duplicate entry to a list.
TFilerFlag TFilerFlag indicates information about how a filer should read or write a component and TFilerFlags is a set of TFilerFlag values.
TFindAncestorEvent TFindAncestorEvent is a procedure called by the TWriter class OnFindAncestor event.
TFindComponentClassEvent TFindComponentClassEvent is the type of the OnFindComponentClass event handler.
TFindComponentInstanceEvent TFindComponentInstanceEvent is a procedure called by the TReader class OnFindMethodInstance event.
TFindMethodInstanceEvent TFindMethodInstanceEvent is a procedure called by the TReader class OnFindMethodInstance event.
TFindMethodNameEvent TFindMethodNameEvent is a procedure called by the TWriter class OnFindMethodName event.
TGetChildProc For internal use only.
TGetStrProc TGetStrProc is a general purpose type of callback procedure invoked for each of a set of strings.
THelpContext The range of values that HelpContext values may have.
THelpType THelpType indicates whether components invoke the help system using a context ID or a keyword.
THintEvent THintEvent is the method pointer type used to define OnHint events.
TIdentMapEntry TIdentMapEntry is used to perform ident string to integer value mapping.
TIsUniqueGlobalComponentName TIsUniqueGlobalComponentName is a type of function used by IsUniqueGlobalComponentName.
TLeftRight TLeftRight is a subset of TAlignment that allows left or right justification.
TListAssignOp TListAssignOp indicates how two lists should be merged.
TListNotification TListNotification defines list processing action types.
TListSortCompare TListSortCompare is a type of callback function called used internally by the TList class.
TNotifyEvent TNotifyEvent is used for events that do not require parameters.
TOperation TOperation represents the types of operations whose occurrence is broadcast by the Notification method.
TPointerList TPointerList is an array of pointers.
TReadComponentsProc TReadComponentsProc is a type of callback procedure called used internally by the TReader class ReadComponents method.
TReaderError TReaderError is a type of callback procedure called used internally by the TReader class ReadComponents method.
TReaderProc TReaderProc is a type of callback procedure called used by TFiler and descendant DefineProperty methods.
TReferenceNameEvent TReferenceNameEvent is a procedure called by the TReader class OnReferenceName event.
TSeekOrigin TSeekOrigin indicates where to start a seek operation.
TShortCut TShortCut defines a data type that can hold the representation of a key combination or shortcut, that is, of a main key and optionally one or more modifier keys, such as
SHIFT or ALT. TStreamOriginalFormat TStreamOriginalFormat indicates the format in which a form file is saved.
TStreamOwnership TStreamOwnership indicates whether a stream object should be freed by the object that uses it.
TStreamProc TStreamProc is a type of callback procedure called used by TFiler and descendant DefineBinaryProperty methods.
TStringItem TStringItem defines a TStringList entry.
TStringListSortCompare TStringListSortCompare is a type of callback function called used internally by the TStringList class.
TStringsDefined TStringsDefined defines an enumeration of string delimiter names.
TStringsOption Represents a set of TStrings boolean properties.
TStringsOptions Set of boolean properties.
TThreadPriority TThreadPriority indicates the scheduling priority of a thread object on Windows.
TValueType TValueType defines the kinds of values written to and read from filer objects.
TVerticalAlignment TVerticalAlignment specifies how text is vertically aligned within a control.
TWndMethod TWndMethod is the type for Windows message procedures.
TWriterProc TWriterProc is a type of callback procedure called used by TFiler and descendant DefineProperty methods.
Variables
AddDataModule Defines a procedure to be called when a TDataModule class is created.
ApplicationHandleException Defines a procedure that is called to handle an Exception.
ApplicationShowException Defines a procedure to be called when an Exception is raised.
CurrentGroup Keeps track of which objects are associated with which packages.
GlobalNameSpace GlobalNameSpace is used internally by the VCL framework.
IsUniqueGlobalComponentNameProc IsUniqueGlobalComponentNameProc is called by IsUniqueGlobalComponentName.
RemoveDataModule Defines a procedure to be called when a TDataModule class is destroyed.
WakeMainThread Represents a method (event handler) that is forced into the main thread's queue.
Constants
fmCreate fmCreate: Integer = $FF00;
MaxListSize MaxListSize: Integer = 7ドルFFFFFF;
pidAndroid pidAndroid: Integer = 10ドル;
pidAndroid64 pidAndroid64: Integer = 8000ドル;
pidiOSDevice pidiOSDevice: Integer = 40ドル;
pidiOSDevice32 pidiOSDevice32: Integer = 40ドル;
pidiOSDevice64 pidiOSDevice64: Integer = 400ドル;
pidiOSSimulator pidiOSSimulator: Integer = 8;
pidLinux32 pidLinux32: Integer = 20ドル;
pidLinux32Arm pidLinux32Arm: Integer = 2000ドル;
pidLinux64 pidLinux64: Integer = 80ドル;
pidLinux64Arm pidLinux64Arm: Integer = 4000ドル;
pidOSX32 pidOSX32: Integer = 4;
pidOSX64 pidOSX64: Integer = 1000ドル;
pidOSXNX64 pidOSXNX64: Integer = 1000ドル;
pidWin32 pidWin32: Integer = 1;
pidWin64 pidWin64: Integer = 2;
pidWinARM pidWinARM: Integer = 800ドル;
pidWinIoT32 pidWinIoT32: Integer = 200ドル;
pidWinNX32 pidWinNX32: Integer = 100ドル;
scAlt scAlt: Integer = 8000ドル;
scCommand scCommand: Integer = 1000ドル;
scCtrl scCtrl: Integer = 4000ドル;
scNone scNone: Integer = 0;
scShift scShift: Integer = 2000ドル;
soFromBeginning soFromBeginning: Integer = 0;
soFromCurrent soFromCurrent: Integer = 1;
soFromEnd soFromEnd: Integer = 2;
toEOF toEOF: Char = 0;
toFloat toFloat: Char = 4;
toInteger toInteger: Char = 3;
toString toString: Char = 2;
toSymbol toSymbol: Char = 1;
toWString toWString: Char = 5;