ActiveX内存泄漏

一.ocx入口和dll入口一样

var
  oServices: TThemeServices;
begin
  Assert(IsLibrary);
  oServices := Themes.ThemeServices;
  System.RegisterExpectedMemoryLeak(oServices);
end.

二.创建控件

1.　　添加类TAFCActiveFormControl 

2.　　修改创建 

initialization
  TActiveFormFactory.Create(
    ComServer,
    TAFCActiveFormControl,
    TAFCTest,
    Class_AFCTest,
    1,
    '',
    OLEMISC_SIMPLEFRAME or OLEMISC_ACTSLIKELABEL,
    tmApartment);

3.具体单元:

unit AFCTestImpl;

{$WARN SYMBOL_PLATFORM OFF}

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  ActiveX, AxCtrls, AXTest_TLB, StdVcl, StdCtrls, TB2Item, TBX, TB2Dock,
  TB2Toolbar;

type
  TAFCTest = class(TActiveForm, IAFCTest)
    Button1: TButton;
    Edit1: TEdit;
    Label1: TLabel;
    tb: TTBDock;
    TBToolbar1: TTBToolbar;
    TBXItem1: TTBXItem;
    TBXItem2: TTBXItem;
    TBXItem3: TTBXItem;
    TBXItem4: TTBXItem;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
    FEvents: IAFCTestEvents;
    procedure ActivateEvent(Sender: TObject);
    procedure ClickEvent(Sender: TObject);
    procedure CreateEvent(Sender: TObject);
    procedure DblClickEvent(Sender: TObject);
    procedure DeactivateEvent(Sender: TObject);
    procedure DestroyEvent(Sender: TObject);
    procedure KeyPressEvent(Sender: TObject; var Key: Char);
    procedure MouseEnterEvent(Sender: TObject);
    procedure MouseLeaveEvent(Sender: TObject);
    procedure PaintEvent(Sender: TObject);
  protected
    { Protected declarations }
    procedure DefinePropertyPages(DefinePropertyPage: TDefinePropertyPage); override;
    procedure EventSinkChanged(const EventSink: IUnknown); override;
    function Get_Active: WordBool; safecall;
    function Get_AlignDisabled: WordBool; safecall;
    function Get_AlignWithMargins: WordBool; safecall;
    function Get_AutoScroll: WordBool; safecall;
    function Get_AutoSize: WordBool; safecall;
    function Get_AxBorderStyle: TxActiveFormBorderStyle; safecall;
    function Get_Caption: WideString; safecall;
    function Get_Color: OLE_COLOR; safecall;
    function Get_DockSite: WordBool; safecall;
    function Get_DoubleBuffered: WordBool; safecall;
    function Get_DropTarget: WordBool; safecall;
    function Get_Enabled: WordBool; safecall;
    function Get_ExplicitHeight: Integer; safecall;
    function Get_ExplicitLeft: Integer; safecall;
    function Get_ExplicitTop: Integer; safecall;
    function Get_ExplicitWidth: Integer; safecall;
    function Get_Font: IFontDisp; safecall;
    function Get_HelpFile: WideString; safecall;
    function Get_KeyPreview: WordBool; safecall;
    function Get_MouseInClient: WordBool; safecall;
    function Get_PixelsPerInch: Integer; safecall;
    function Get_PopupMode: TxPopupMode; safecall;
    function Get_PrintScale: TxPrintScale; safecall;
    function Get_Scaled: WordBool; safecall;
    function Get_ScreenSnap: WordBool; safecall;
    function Get_SnapBuffer: Integer; safecall;
    function Get_UseDockManager: WordBool; safecall;
    function Get_Visible: WordBool; safecall;
    function Get_VisibleDockClientCount: Integer; safecall;
    procedure _Set_Font(var Value: IFontDisp); safecall;
    procedure Set_AlignWithMargins(Value: WordBool); safecall;
    procedure Set_AutoScroll(Value: WordBool); safecall;
    procedure Set_AutoSize(Value: WordBool); safecall;
    procedure Set_AxBorderStyle(Value: TxActiveFormBorderStyle); safecall;
    procedure Set_Caption(const Value: WideString); safecall;
    procedure Set_Color(Value: OLE_COLOR); safecall;
    procedure Set_DockSite(Value: WordBool); safecall;
    procedure Set_DoubleBuffered(Value: WordBool); safecall;
    procedure Set_DropTarget(Value: WordBool); safecall;
    procedure Set_Enabled(Value: WordBool); safecall;
    procedure Set_Font(const Value: IFontDisp); safecall;
    procedure Set_HelpFile(const Value: WideString); safecall;
    procedure Set_KeyPreview(Value: WordBool); safecall;
    procedure Set_PixelsPerInch(Value: Integer); safecall;
    procedure Set_PopupMode(Value: TxPopupMode); safecall;
    procedure Set_PrintScale(Value: TxPrintScale); safecall;
    procedure Set_Scaled(Value: WordBool); safecall;
    procedure Set_ScreenSnap(Value: WordBool); safecall;
    procedure Set_SnapBuffer(Value: Integer); safecall;
    procedure Set_UseDockManager(Value: WordBool); safecall;
    procedure Set_Visible(Value: WordBool); safecall;
  public
    { Public declarations }
    procedure Initialize; override;
  end;

  TAFCActiveFormControl = class(TActiveFormControl)
  private
    procedure ReleaseOleLinkStub;
  public
    destructor Destroy; override;
  end;

implementation

uses
  ComObj, ComServ, GRPEngineUtils, GRPInterface;

{$R *.DFM}

type
{$HINTS OFF}
{$WARNINGS OFF}
  TGCPHackActiveXControl = class(TAutoObject)
  private
    FControlFactory: TActiveXControlFactory;
    FConnectionPoints: TConnectionPoints;
    FPropertySinks: TConnectionPoint;
    FObjectSafetyFlags: DWORD;
    FOleClientSite: IOleClientSite;
    FOleControlSite: IOleControlSite;
    FSimpleFrameSite: ISimpleFrameSite;
    FAmbientDispatch: IAmbientDispatch;
    FOleInPlaceSite: IOleInPlaceSite;
    FOleInPlaceFrame: IOleInPlaceFrame;
    FOleInPlaceUIWindow: IOleInPlaceUIWindow;
    FOleAdviseHolder: IOleAdviseHolder;
    FDataAdviseHolder: IDataAdviseHolder;
    FAdviseSink: IAdviseSink;
    FAdviseFlags: Integer;
    FControl: TWinControl;
    FControlWndProc: TWndMethod;
    FWinControl: TWinControl;
    FIsDirty: Boolean;
    FInPlaceActive: Boolean;
    FUIActive: Boolean;
    FEventsFrozen: Boolean;
    FOleLinkStub: IInterface;
  end;
{$WARNINGS ON}
{$HINTS ON}

{ TAFCTest }

procedure TAFCTest.DefinePropertyPages(DefinePropertyPage: TDefinePropertyPage);
begin
  { Define property pages here.  Property pages are defined by calling
    DefinePropertyPage with the class id of the page.  For example,
      DefinePropertyPage(Class_AFCTestPage); }
end;

procedure TAFCTest.EventSinkChanged(const EventSink: IUnknown);
begin
  FEvents := EventSink as IAFCTestEvents;
  inherited EventSinkChanged(EventSink);
end;

procedure TAFCTest.Initialize;
begin
  inherited Initialize;
  OnActivate := ActivateEvent;
  OnClick := ClickEvent;
  OnCreate := CreateEvent;
  OnDblClick := DblClickEvent;
  OnDeactivate := DeactivateEvent;
  OnDestroy := DestroyEvent;
  OnKeyPress := KeyPressEvent;
  OnMouseEnter := MouseEnterEvent;
  OnMouseLeave := MouseLeaveEvent;
  OnPaint := PaintEvent;
end;

function TAFCTest.Get_Active: WordBool;
begin
  Result := Active;
end;

function TAFCTest.Get_AlignDisabled: WordBool;
begin
  Result := AlignDisabled;
end;

function TAFCTest.Get_AlignWithMargins: WordBool;
begin
  Result := AlignWithMargins;
end;

function TAFCTest.Get_AutoScroll: WordBool;
begin
  Result := AutoScroll;
end;

function TAFCTest.Get_AutoSize: WordBool;
begin
  Result := AutoSize;
end;

function TAFCTest.Get_AxBorderStyle: TxActiveFormBorderStyle;
begin
  Result := Ord(AxBorderStyle);
end;

function TAFCTest.Get_Caption: WideString;
begin
  Result := WideString(Caption);
end;

function TAFCTest.Get_Color: OLE_COLOR;
begin
  Result := OLE_COLOR(Color);
end;

function TAFCTest.Get_DockSite: WordBool;
begin
  Result := DockSite;
end;

function TAFCTest.Get_DoubleBuffered: WordBool;
begin
  Result := DoubleBuffered;
end;

function TAFCTest.Get_DropTarget: WordBool;
begin
  Result := DropTarget;
end;

function TAFCTest.Get_Enabled: WordBool;
begin
  Result := Enabled;
end;

function TAFCTest.Get_ExplicitHeight: Integer;
begin
  Result := ExplicitHeight;
end;

function TAFCTest.Get_ExplicitLeft: Integer;
begin
  Result := ExplicitLeft;
end;

function TAFCTest.Get_ExplicitTop: Integer;
begin
  Result := ExplicitTop;
end;

function TAFCTest.Get_ExplicitWidth: Integer;
begin
  Result := ExplicitWidth;
end;

function TAFCTest.Get_Font: IFontDisp;
begin
  GetOleFont(Font, Result);
end;

function TAFCTest.Get_HelpFile: WideString;
begin
  Result := WideString(HelpFile);
end;

function TAFCTest.Get_KeyPreview: WordBool;
begin
  Result := KeyPreview;
end;

function TAFCTest.Get_MouseInClient: WordBool;
begin
  Result := MouseInClient;
end;

function TAFCTest.Get_PixelsPerInch: Integer;
begin
  Result := PixelsPerInch;
end;

function TAFCTest.Get_PopupMode: TxPopupMode;
begin
  Result := Ord(PopupMode);
end;

function TAFCTest.Get_PrintScale: TxPrintScale;
begin
  Result := Ord(PrintScale);
end;

function TAFCTest.Get_Scaled: WordBool;
begin
  Result := Scaled;
end;

function TAFCTest.Get_ScreenSnap: WordBool;
begin
  Result := ScreenSnap;
end;

function TAFCTest.Get_SnapBuffer: Integer;
begin
  Result := SnapBuffer;
end;

function TAFCTest.Get_UseDockManager: WordBool;
begin
  Result := UseDockManager;
end;

function TAFCTest.Get_Visible: WordBool;
begin
  Result := Visible;
end;

function TAFCTest.Get_VisibleDockClientCount: Integer;
begin
  Result := VisibleDockClientCount;
end;

procedure TAFCTest._Set_Font(var Value: IFontDisp);
begin
  SetOleFont(Font, Value);
end;

procedure TAFCTest.ActivateEvent(Sender: TObject);
begin
  if FEvents <> nil then FEvents.OnActivate;
end;

procedure TAFCTest.Button1Click(Sender: TObject);
var
  iDataSrore: IGRPDataStore;
  iEngine: IGRPEngine;
begin
//  oGRPEngine := GRPEngine;
//  oGRPEngine := nil;
//  FreeEngine;


  iDataSrore := GRPEngine.CreateDataStore;
  iDataSrore := nil;
  FreeEngine;
  ShowMessage(Edit1.Text);
end;

procedure TAFCTest.ClickEvent(Sender: TObject);
begin
  if FEvents <> nil then FEvents.OnClick;
end;

procedure TAFCTest.CreateEvent(Sender: TObject);
begin
  if FEvents <> nil then FEvents.OnCreate;
end;

procedure TAFCTest.DblClickEvent(Sender: TObject);
begin
  if FEvents <> nil then FEvents.OnDblClick;
end;

procedure TAFCTest.DeactivateEvent(Sender: TObject);
begin
  if FEvents <> nil then FEvents.OnDeactivate;
end;

procedure TAFCTest.DestroyEvent(Sender: TObject);
begin
  if FEvents <> nil then FEvents.OnDestroy;
end;

procedure TAFCTest.KeyPressEvent(Sender: TObject; var Key: Char);
var
  TempKey: Smallint;
begin
  TempKey := Smallint(Key);
  if FEvents <> nil then FEvents.OnKeyPress(TempKey);
  Key := Char(TempKey);
end;

procedure TAFCTest.MouseEnterEvent(Sender: TObject);
begin
  if FEvents <> nil then FEvents.OnMouseEnter;
end;

procedure TAFCTest.MouseLeaveEvent(Sender: TObject);
begin
  if FEvents <> nil then FEvents.OnMouseLeave;
end;

procedure TAFCTest.PaintEvent(Sender: TObject);
begin
  if FEvents <> nil then FEvents.OnPaint;
end;

procedure TAFCTest.Set_AlignWithMargins(Value: WordBool);
begin
  AlignWithMargins := Value;
end;

procedure TAFCTest.Set_AutoScroll(Value: WordBool);
begin
  AutoScroll := Value;
end;

procedure TAFCTest.Set_AutoSize(Value: WordBool);
begin
  AutoSize := Value;
end;

procedure TAFCTest.Set_AxBorderStyle(Value: TxActiveFormBorderStyle);
begin
  AxBorderStyle := TActiveFormBorderStyle(Value);
end;

procedure TAFCTest.Set_Caption(const Value: WideString);
begin
  Caption := TCaption(Value);
end;

procedure TAFCTest.Set_Color(Value: OLE_COLOR);
begin
  Color := TColor(Value);
end;

procedure TAFCTest.Set_DockSite(Value: WordBool);
begin
  DockSite := Value;
end;

procedure TAFCTest.Set_DoubleBuffered(Value: WordBool);
begin
  DoubleBuffered := Value;
end;

procedure TAFCTest.Set_DropTarget(Value: WordBool);
begin
  DropTarget := Value;
end;

procedure TAFCTest.Set_Enabled(Value: WordBool);
begin
  Enabled := Value;
end;

procedure TAFCTest.Set_Font(const Value: IFontDisp);
begin
  SetOleFont(Font, Value);
end;

procedure TAFCTest.Set_HelpFile(const Value: WideString);
begin
  HelpFile := string(Value);
end;

procedure TAFCTest.Set_KeyPreview(Value: WordBool);
begin
  KeyPreview := Value;
end;

procedure TAFCTest.Set_PixelsPerInch(Value: Integer);
begin
  PixelsPerInch := Value;
end;

procedure TAFCTest.Set_PopupMode(Value: TxPopupMode);
begin
  PopupMode := TPopupMode(Value);
end;

procedure TAFCTest.Set_PrintScale(Value: TxPrintScale);
begin
  PrintScale := TPrintScale(Value);
end;

procedure TAFCTest.Set_Scaled(Value: WordBool);
begin
  Scaled := Value;
end;

procedure TAFCTest.Set_ScreenSnap(Value: WordBool);
begin
  ScreenSnap := Value;
end;

procedure TAFCTest.Set_SnapBuffer(Value: Integer);
begin
  SnapBuffer := Value;
end;

procedure TAFCTest.Set_UseDockManager(Value: WordBool);
begin
  UseDockManager := Value;
end;

procedure TAFCTest.Set_Visible(Value: WordBool);
begin
  Visible := Value;
end;

{ TAFCActiveFormControl }

destructor TAFCActiveFormControl.Destroy;
begin
  ReleaseOleLinkStub;

  inherited;
end;

////////////////////////////////////////////////////////////////////////////////
//设计: Linc 2010.02.02
//功能: 主要是为了修正 TOleLinkStub 内存泄漏
//参数：
//注意: 按照局部变量在内存中的分布，获取 OleLinkStub 的指针
////////////////////////////////////////////////////////////////////////////////
procedure TAFCActiveFormControl.ReleaseOleLinkStub;
var
  cLinkStub: IInterface;
begin
{$DEFINE SHOWWARN}

{$IFDEF VER150}
  {$UNDEF SHOWWARN}
{$ENDIF}
{$IFDEF VER170}
  {$UNDEF SHOWWARN}
{$ENDIF}
{$IFDEF VER180}
  {$UNDEF SHOWWARN}
{$ENDIF}

{$IFDEF SHOWWARN}
  {$MESSAGE WARN '非 Delphi 7/2005/2006/2007 中 OleLinkStub 的内存分布常量有可能有不同！'}
  cLinkStub := nil;
{$ELSE}
  cLinkStub := TGCPHackActiveXControl(Self).FOleLinkStub;
{$ENDIF}
  if Assigned(cLinkStub) then
  try
    cLinkStub._Release;
  finally
    cLinkStub := nil;
  end;
{$UNDEF SHOWWARN}
end;

initialization
  TActiveFormFactory.Create(
    ComServer,
    TAFCActiveFormControl,
    TAFCTest,
    Class_AFCTest,
    1,
    '',
    OLEMISC_SIMPLEFRAME or OLEMISC_ACTSLIKELABEL,
    tmApartment);
end.