Delphi - база знаний


Иерархия классов


Иерархия классов





Следующий модуль строит дерево классов

unitInfoForm;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms,
  StdCtrls, ExtCtrls, Buttons, Clipbrd, Comctrls, Db, Dbcgrids,
  Dbctrls, Dbgrids, Dblookup, Dbtables, Dialogs,
  Filectrl, Grids, Mask, Menus, Mplayer, Oleconst, Olectnrs,
  Olectrls, Outline, Tabnotbk, Tabs, IniFiles, Printers,
  Registry, DsgnIntf, Provider, BdeProv, DBClient,
  ComObj, ActiveX, DDEMan, IBCtrls, Math, Nsapi, Isapi,
  ScktComp, Axctrls, Calendar, CgiApp, checklst,
  ColorGrd, ComServ, syncobjs, httpapp, dbweb, DirOutln,
  Gauges, DsIntf, ToolIntf, EditINtf, ExptIntf, VirtIntf,
  istreams, isapiapp, dblogdlg, masks, ExtDlgs, Spin;

type
  TForm1 = class(TForm)
    ListBox1: TListBox;
    Label1: TLabel;
    Edit1: TEdit;
    Label2: TLabel;
    Panel1: TPanel;
    TreeView1: TTreeView;
    ProgressBar1: TProgressBar;
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure TreeView1Change(Sender: TObject; Node: TTreeNode);
    procedure Button2Click(Sender: TObject);
  private
    function AddClass (NewClass: TClass): TTreeNode;
    function GetNode (BaseClass: TClass): TTreeNode;
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

type
  TClassArray = array [1..498] of TClass;

const
  ClassArray: TClassArray = (
EAbort,
EAccessViolation,
EAssertionFailed,
EBitsError,
EClassNotFound,
EComponentError,
EControlC,
EConvertError,
EDatabaseError,
EDateTimeError,
EDBClient,
EDBEditError,
EDBEngineError,
EDivByZero,
EExternalException,
EFCreateError,
EFilerError,
EFOpenError,
EIBError,
EInOutError,
EIntError,
EIntfCastError,
EIntOverflow,
EInvalidArgument,
EInvalidCast,
EInvalidContainer,
EInvalidGraphic,
EInvalidGraphicOperation,
EInvalidGridOperation,
EInvalidImage,
EInvalidInsert,
EInvalidOp,
EInvalidOperation,
EInvalidPointer,
EListError,
EMathError,
EMCIDeviceError,
EMenuError,
EMethodNotFound,
ENoResultSet,
EOleCtrlError,
EOleError,
EOleException,
EOleException,
EOleSysError,
EOutlineError,
EOutOfMemory,
EOutOfResources,
EOverflow,
EPackageError,
EParserError,
EPrinter,
EPrivilege,
EPropertyError,
EPropReadOnly,
EPropWriteOnly,
ERangeError,
EReadError,
EReconcileError,
ERegistryException,
EResNotFound,
ESocketError,
EStackOverflow,
EStreamError,
EStringListError,
EThread,
ETreeViewError,
EUnderflow,
EUpdateError,
EVariantError,
EWin32Error,
EWriteError,
Exception,
EZeroDivide,
OutlineError,
TActiveForm,
TActiveFormControl,
TActiveFormFactory,
TActiveXControl,
TActiveXControlFactory,
TActiveXPropertyPage,
TActiveXPropertyPageFactory,
TAdapterNotifier,
TAggregatedObject,
TAnimate,
TApplication,
TAutoIncField,
TAutoIntfObject,
TAutoObject,
TAutoObjectFactory,
TBatchMove,
TBCDField,
TBDECallback,
TBDEDataSet,
TBevel,
TBinaryField,
TBitBtn,
TBitmap,
TBitmapImage,
TBits,
TBlobField,
TBlobStream,
TBookmarkList,
TBooleanField,
TBoolProperty,
TBrush,
TButton,
TButtonControl,
TBytesField,
TCalendar,
TCanvas,
TCaptionProperty,
TCGIApplication,
TCGIRequest,
TCGIResponse,
TChangeLink,
TCharProperty,
TCheckBox,
TCheckConstraint,
TCheckConstraints,
TCheckListBox,
TClassProperty,
TClientDataSet,
TClientSocket,
TClientWinSocket,
TClipboard,
TCollection,
TCollectionItem,
TColorDialog,
TColorGrid,
TColorProperty,
TColumn,
TColumnTitle,
TComboBox,
TComboButton,
TComClassManager,
TCommonDialog,
TCommonDialog,
TComObject,
TComObjectFactory,
TComponent,
TComponentEditor,
TComponentList,
TComponentNameProperty,
TComponentProperty,
TComServer,
TComServerObject,
TComServerObject,
TConnectionPoint,
TConnectionPoints,
TContainedObject,
TControl,
TControlCanvas,
TControlScrollBar,
TConversion,
TCoolBand,
TCoolBands,
TCoolBar,
TCriticalSection,
TCurrencyField,
TCursorProperty,
TCustomAdapter,
TCustomAdapter,
TCustomCheckBox,
TCustomComboBox,
TCustomControl,
TCustomDBGrid,
TCustomEdit,
TCustomForm,
TCustomGrid,
TCustomGroupBox,
TCustomHotKey,
TCustomImageList,
TCustomLabel,
TCustomListBox,
TCustomListView,
TCustomMaskEdit,
TCustomMemo,
TCustomMemoryStream,
TCustomModule,
TCustomOutline,
TCustomPageProducer,
TCustomPanel,
TCustomProvider,
TCustomRadioGroup,
TCustomRemoteServer,
TCustomRemoteServer,
TCustomRichEdit,
TCustomServerSocket,
TCustomSocket,
TCustomStaticText,
TCustomTabControl,
TCustomTreeView,
TCustomUpDown,
TCustomWebDispatcher,
TCustomWinSocket,
TDatabase,
TDataLink,
TDataModule,
TDataSet,
TDataSetDesigner,
TDataSetTableProducer,
TDataSetUpdateObject,
TDataSetUpdateObject,
TDataSource,
TDataSourceLink,
TDateField,
TDateProperty,
TDateTimeColors,
TDateTimeField,
TDateTimePicker,
TDBCheckBox,
TDBComboBox,
TDBCtrlGrid,
TDBCtrlGridLink,
TDBCtrlPanel,
TDBDataSet,
TDBEdit,
TDBError,
TDBGrid,
TDBGridColumns,
TDBImage,
TDBListBox,
TDBLookupCombo,
TDBLookupComboBox,
TDBLookupControl,
TDBLookupList,
TDBLookupListBox,
TDBMemo,
TDBNavigator,
TDBRadioGroup,
TDBRichEdit,
TDBText,
TDdeClientConv,
TDdeClientItem,
TDdeMgr,
TDdeServerConv,
TDdeServerItem,
TDefaultEditor,
TDesigner,
TDirectoryListBox,
TDirectoryOutline,
TDragControlObject,
TDragObject,
TDrawGrid,
TDriveComboBox,
TDSTableProducer,
TDSTableProducerEditor,
TEdit,
TEnumPropDesc,
TEnumProperty,
TEvent,
TEventDispatch,
TField,
TFieldDataLink,
TFieldDef,
TFieldDefs,
TFileListBox,
TFiler,
TFileStream,
TFilterComboBox,
TFindDialog,
TFloatField,
TFloatProperty,
TFont,
TFontAdapter,
TFontCharsetProperty,
TFontDialog,
TFontNameProperty,
TFontProperty,
TForm,
TFormDesigner,
TGauge,
TGraphic,
TGraphicControl,
TGraphicField,
TGraphicsObject,
TGridDataLink,
TGroupBox,
THandleObject,
THandleStream,
THeader,
THeaderControl,
THeaderSection,
THeaderSections,
THintWindow,
THotKey,
THTMLTableAttributes,
THTMLTableCellAttributes,
THTMLTableColumn,
THTMLTableColumns,
THTMLTableElementAttributes,
THTMLTableHeaderAttributes,
THTMLTableRowAttributes,
THTMLTagAttributes,
THTTPDataLink,
TIBComponent,
TIBEventAlerter,
TIComponentInterface,
TIcon,
TIconImage,
TIconOptions,
TIEditorInterface,
TIEditReader,
TIEditView,
TIEditWriter,
TIExpert,
TIFileStream,
TIFormInterface,
TImage,
TImageList,
TIMainMenuIntf,
TIMemoryStream,
TImeNameProperty,
TIMenuItemIntf,
TIModuleCreator,
TIModuleInterface,
TIModuleNotifier,
TIndexDef,
TIndexDefs,
TIndexFiles,
TIniFile,
TInplaceEdit,
TIntegerField,
TIntegerProperty,
TInterface,
TInterfacedObject,
TIProjectCreator,
TIResourceEntry,
TIResourceFile,
TISAPIApplication,
TISAPIRequest,
TISAPIResponse,
TIStream,
TIStreamAdapter,
TIToolServices,
TIVCLStreamAdapter,
TLabel,
TList,
TListBox,
TListColumn,
TListColumns,
TListColumns,
TListItem,
TListItems,
TListSourceLink,
TListView,
TLoginDialog,
TLookupList,
TMainMenu,
TMask,
TMaskEdit,
TMediaPlayer,
TMemo,
TMemoField,
TMemoryStream,
TMenu,
TMenuItem,
TMetafile,
TMetafileCanvas,
TMetafileImage,
TMethodProperty,
TModalResultProperty,
TMPFilenameProperty,
TNavButton,
TNavButton,
TNavDataLink,
TNotebook,
TNumericField,
TObject,
TOleContainer,
TOleControl,
TOleForm,
TOleGraphic,
TOleStream,
TOpenDialog,
TOpenPictureDialog,
TOrdinalProperty,
TOutline,
TOutlineNode,
TPage,
TPageControl,
TPageProducer,
TPaintBox,
TPaintControl,
TPanel,
TParaAttributes,
TParam,
TParamList,
TParams,
TParser,
TPen,
TPersistent,
TPicture,
TPictureAdapter,
TPopupDataList,
TPopupGrid,
TPopupMenu,
TPrintDialog,
TPrinter,
TPrinterSetupDialog,
TProgressBar,
TPropertyEditor,
TPropertyPage,
TProvider,
TProviderObject,
TQuery,
TQueryTableProducer,
TRadioButton,
TRadioGroup,
TReader,
TRegIniFile,
TRegistry,
TRemoteServer,
TReplaceDialog,
TResourceStream,
TRichEdit,
TSaveDialog,
TSavePictureDialog,
TScreen,
TScrollBox,
TScroller,
TScrollingWinControl,
TServerAcceptThread,
TServerClientThread,
TServerClientWinSocket,
TServerSocket,
TServerWinSocket,
dbtables.TSession,
TSessionList,
TSetElementProperty,
TSetProperty,
TShape,
TSharedImage,
TShortCutProperty,
TSimpleEvent,
TSmallintField,
TSpeedButton,
TSpinButton,
TSpinEdit,
TSplitter,
TStaticText,
TStatusBar,
TStatusBar,
TStatusPanel,
TStatusPanels,
TStoredProc,
TStream,
TStringField,
TStringGrid,
TStringGrid,
TStringGridStrings,
TStringList,
TStringProperty,
TStrings,
TStringsAdapter,
TStringStream,
TSynchroObject,
TTabbedNotebook,
TTabControl,
TTable,
TTabList,
TTabOrderProperty,
TTabPage,
TTabSet,
TTabSheet,
TTextAttributes,
TThread,
TThreadList,
TTimeField,
TTimeProperty,
TTimer,
TTimerSpeedButton,
TToolBar,
TToolButton,
TTrackBar,
TTreeNode,
TTreeNodes,
TTreeView,
TTypedComObject,
TTypedComObjectFactory,
TUpdateSQL,
TUpDown,
TVarBytesField,
TVirtualStream,
TWebActionItem,
TWebActionItems,
TWebApplication,
TWebDispatcher,
TWebModule,
TWebRequest,
TWebResponse,
TWinCGIRequest,
TWinCGIResponse,
TWinControl,
TWinSocketStream,
TWordField,
TWriter
);

function TForm1.AddClass (NewClass: TClass): TTreeNode;
var
  ParentNode: TTreeNode;
begin
  // if the class is not there...
  Result := GetNode (NewClass);
  if Result = nil then
  begin
    // look for the parent (eventually adding it)
    ParentNode := AddClass (NewClass.ClassParent);
    // add the new class
    Result := TreeView1.Items.AddChildObject (
      ParentNode,
      NewClass.ClassName,
      Pointer (NewClass));
  end;
end;

function TForm1.GetNode (BaseClass: TClass): TTreeNode;
var
  Node1: TTreeNode;
begin
  Result := nil// not found
  // find the node in the tree
  Node1 := TreeView1.Items.GetFirstNode;
  while Node1 <> nil do
  begin
    if Node1.Text = BaseClass.ClassName then
    begin
      Result := Node1;
      Exit;
    end;
    Node1 := Node1.GetNext;
    Forms.Application.ProcessMessages;
  end;
(* slower loop...
  for I := 0 to TreeView1.Items.Count - 1 do
  begin
    if TreeView1.Items [I].Text = BaseClass.ClassName then
    begin
      Result := TreeView1.Items [I];
      Exit;
    end;
    Application.ProcessMessages;
  end;*)
end;

procedure TForm1.Button1Click(Sender: TObject);
var
  I: Integer;
begin
  // don't restart this loop
  Button1.Enabled := False;
  // add the root class
  TreeView1.Items.AddObject (nil, 'TObject',
    Pointer (TObject));
  // add each class to the tree
  ProgressBar1.Min := Low (ClassArray);
  ProgressBar1.Max := High (ClassArray);
  for I := Low (ClassArray) to High (ClassArray) do
  begin
    AddClass (ClassArray [I]);
    ProgressBar1.Position := I;
  end;
  Beep;
  ShowMessage ('Tree Completed');
  Button2.Enabled := True;
  Button1.Enabled := False;
end;

procedure TForm1.TreeView1Change (
  Sender: TObject; Node: TTreeNode);
var
  MyClass: TClass;
begin
  MyClass := TClass (Node.Data);
  Edit1.Text := Format ('Name: %s - Size: %d bytes',
    [MyClass.ClassName, MyClass.InstanceSize]);
  with Listbox1.Items do
  begin
    Clear;
    while MyClass.ClassParent <> nil do
    begin
      MyClass := MyClass.ClassParent;
      Add (MyClass.ClassName);
    end// while
  end// with
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  Screen.Cursor := crHourglass;
  TreeView1.SortType := stText;
  Screen.Cursor := crDefault;
  Button2.Enabled := False;
end;

end.

Взято с






Начало  Назад  Вперед



Книжный магазин