Delphi不注册COM直接使用ActiveX控件并绑定事件

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unit Unit1;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.ExtCtrls, Vcl.StdCtrls, Winapi.ActiveX
  , System.Win.ComObj, EventSink;

type
  TForm1 = class(TForm)
    pnlCom: TPanel;
    Panel2: TPanel;
    Panel3: TPanel;
    btnGo: TButton;
    edt1: TEdit;
    LblStatus: TLabel;
    procedure FormCreate(Sender: TObject);
    procedure btnGoClick(Sender: TObject);
  private
    { Private declarations }
    EventSink: TEventSink;
    ActiveXCon: Variant;
    function InitAtl: Boolean;
    procedure EventSinkInvoke(Sender: TObject; DispID: Integer;
       const IID: TGUID; LocaleID: Integer; Flags: Word;
       Params: tagDISPPARAMS; VarResult, ExcepInfo, ArgErr: Pointer);
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

const
  CLASS_MsRdpClient: TGUID = '{7CACBD7B-0D99-468F-AC33-22E495C0AFE5}';//'{791FA017-2DE3-492E-ACC5-53C67A2B94D0}';

type
  PIUnknown=^IUnknown;
  TAtlAxAttachControl = function(Control:IUnknown; hwind:hwnd;ppUnkContainer:PIUnknown): HRESULT; stdcall;
  //--此处参考mstscax.dll的接口文件，如果没有，在 Component->Import Component->Import a Type Library
  //--导入：Microsoft Terminal Services Active Client 1.0 Type Library 1.0
  IMsTscAxEvents = dispinterface
    ['{336D5562-EFA8-482E-8CB3-C5C0FC7A7DB6}']
    {
    procedure OnConnecting; dispid 1;
    procedure OnConnected; dispid 2;
    procedure OnLoginComplete; dispid 3;
    procedure OnDisconnected(discReason: Integer); dispid 4;
    procedure OnEnterFullScreenMode; dispid 5;
    procedure OnLeaveFullScreenMode; dispid 6;
    procedure OnChannelReceivedData(const chanName: WideString; const data: WideString); dispid 7;
    procedure OnRequestGoFullScreen; dispid 8;
    procedure OnRequestLeaveFullScreen; dispid 9;
    procedure OnFatalError(errorCode: Integer); dispid 10;
    procedure OnWarning(warningCode: Integer); dispid 11;
    procedure OnRemoteDesktopSizeChange( Integer; height: Integer); dispid 12;
    procedure OnIdleTimeoutNotification; dispid 13;
    procedure OnRequestContainerMinimize; dispid 14;
    function OnConfirmClose: WordBool; dispid 15;
    function OnReceivedTSPublicKey(const publicKey: WideString): WordBool; dispid 16;
    function OnAutoReconnecting(disconnectReason: Integer; attemptCount: Integer): AutoReconnectContinueState; dispid 17;
    procedure OnAuthenticationWarningDisplayed; dispid 18;
    procedure OnAuthenticationWarningDismissed; dispid 19;
    }
  end;

implementation

{$R *.dfm}

{ TForm1 }

function CreateComObjectFromDll(CLSID: TGUID; DllHandle: THandle): IUnknown;
var
  Factory: IClassFactory;
  DllGetClassObject: function(const CLSID, IID: TGUID; var Obj): HResult; stdcall;
  hr: HRESULT;
begin
  DllGetClassObject := GetProcAddress(DllHandle, 'DllGetClassObject');
  if Assigned(DllGetClassObject) then
  begin
    hr := DllGetClassObject(CLSID, IClassFactory, Factory);
    if hr = S_OK then
    try
      hr := Factory.CreateInstance(nil, IUnknown, Result);
      if hr <> S_OK then begin
        ShowMessage('Error');
      end;
    except
      ShowMessage(IntToStr(GetLastError));
    end;
  end;
end;

procedure TForm1.btnGoClick(Sender: TObject);
begin
  ActiveXCon.Navigate(edt1.Text);
end;

procedure TForm1.EventSinkInvoke(Sender: TObject; DispID: Integer; const IID: TGUID; LocaleID: Integer; Flags: Word;
  Params: tagDISPPARAMS; VarResult, ExcepInfo, ArgErr: Pointer);
begin  <p>  {
&nbsp;&nbsp;&nbsp; 这里需要注明Params这个参数, 包含了事件的参数
&nbsp;&nbsp;&nbsp; 如：
&nbsp;&nbsp;&nbsp; Params.rgvarg[0] 代表第一个参数
&nbsp;&nbsp;&nbsp; Params.rgvarg[1] 代表第二个参数
&nbsp;&nbsp;&nbsp; ......
&nbsp;&nbsp;&nbsp; Params.rgvarg[65535] 代表第65535个参数
&nbsp;&nbsp;&nbsp; 最多65535个参数
&nbsp;&nbsp;&nbsp; 具体可以参考 tagDISPPARAMS 的定义</p><p>&nbsp;&nbsp;&nbsp; 这里只列出了怎么扑获相关事件，具体功能具体实现
&nbsp; }</p>  case dispid of
    $00000001: LblStatus.Caption := '正在连接';
    $00000002: LblStatus.Caption := '连接成功';
    $00000003: LblStatus.Caption := '登陆成功';
    $00000004: LblStatus.Caption := '断开连接';
    $00000005: LblStatus.Caption := '进入全屏模式';
    $00000006: LblStatus.Caption := '离开全屏模式';
    $00000007: LblStatus.Caption := '通道接收数据';
    $00000008: LblStatus.Caption := 'OnRequestGoFullScreen';
    $00000009: LblStatus.Caption := 'OnRequestLeaveFullScreen';
    $00000010: LblStatus.Caption := 'OnFatalError';
    $00000011: LblStatus.Caption := 'OnWarning';
    $00000012: LblStatus.Caption := 'OnRemoteDesktopSizeChange';
    $00000013: LblStatus.Caption := 'OnIdleTimeoutNotification';
    $00000014: LblStatus.Caption := 'OnRequestContainerMinimize';
    $00000015: LblStatus.Caption := 'OnConfirmClose';
    $00000016: LblStatus.Caption := 'OnReceivedTSPublicKey';
    $00000017: LblStatus.Caption := 'OnAutoReconnecting';
    $00000018: LblStatus.Caption := 'OnAuthenticationWarningDisplayed';
    $00000019: LblStatus.Caption := 'OnAuthenticationWarningDismissed';
  end
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  InitAtl;
end;

function TForm1.InitAtl: Boolean;
var
  hModule, hDll: THandle;
  AtlAxAttachControl: TAtlAxAttachControl;
begin
  hModule := LoadLibrary('atl.dll');
  if hModule < 32 then begin
    Exit(False);
  end;
  AtlAxAttachControl := TAtlAxAttachControl(GetProcAddress(hModule, 'AtlAxAttachControl'));
  EventSink := TEventSink.Create(Self);
  EventSink.OnInvoke := EventSinkInvoke;
  if not Assigned(AtlAxAttachControl) then
    Exit(False);
  try
    {--后期绑定}
//    ActiveXCon := CreateComObject(CLASS_MsRdpClient); //CreateOleObject('Shell.Explorer');  //CreateComObject(CLASS_MsRdpClient);
    {--前期绑定}
    hDll := LoadLibrary('mstscax.dll');
    ActiveXCon := CreateComObjectFromDll(CLASS_MsRdpClient, hDll) as IDispatch;
//    if Assigned(ActiveXCon) then begin
//
//    end;
    if VarIsNull(ActiveXCon) then begin
      Result := False;
      Exit;
    end;
    EventSink.Connect(ActiveXCon, IMsTscAxEvents);
    AtlAxAttachControl(ActiveXCon,pnlCom.Handle, nil);
//    ActiveXCon.GoHome;
    ActiveXCon.Server := '192.168.8.65';
    ActiveXCon.UserName := 'Va_admin';
    ActiveXCon.AdvancedSettings2.ClearTextPassword := 'Va5!1232';
    ActiveXCon.Connect;
    Result := True;
  except
    Result := False;
  end;
end;

end.

事件单元:

unit EventSink;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Classes,
  Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs,
  Winapi.ActiveX;

type
  TInvokeEvent = procedure(Sender: TObject; DispID: Integer; const IID: TGUID;
    LocaleID: Integer; Flags: Word; Params: TDispParams;
    VarResult, ExcepInfo, ArgErr: Pointer) of object;

  TAbstractEventSink = class(TObject, IUnknown, IDispatch)
  private
    FDispatch: IDispatch;
    FDispIntfIID: TGUID;
    FConnection: LongInt;
    FOwner: TComponent;
  protected
    { IUnknown }
    function QueryInterface(const IID: TGUID; out Obj): HRESULT; stdcall;
    function _AddRef: Integer; stdcall;
    function _Release: Integer; stdcall;
    { IDispatch }
    function GetTypeInfoCount(out Count: Integer): HRESULT; stdcall;
    function GetTypeInfo(Index, LocaleID: Integer; out TypeInfo)
      : HRESULT; stdcall;
    function GetIDsOfNames(const IID: TGUID; Names: Pointer;
      NameCount, LocaleID: Integer; DispIDs: Pointer): HRESULT; stdcall;
    function Invoke(DispID: Integer; const IID: TGUID; LocaleID: Integer;
      Flags: Word; var Params; VarResult, ExcepInfo, ArgErr: Pointer)
      : HRESULT; stdcall;
  public
    constructor Create(AOwner: TComponent);
    destructor Destroy; override;
    procedure Connect(AnAppDispatch: IDispatch; const AnAppDispIntfIID: TGUID);
    procedure Disconnect;
  end;

  TEventSink = class(TComponent)
  private
    { Private declarations }
    FSink: TAbstractEventSink;
    FOnInvoke: TInvokeEvent;
  protected
    { Protected declarations }
    procedure DoInvoke(DispID: Integer; const IID: TGUID; LocaleID: Integer;
      Flags: Word; var Params; VarResult, ExcepInfo, ArgErr: Pointer); virtual;
  public
    { Public declarations }
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
    procedure Connect(AnAppDispatch: IDispatch; const AnAppDispIntfIID: TGUID);
  published
    { Published declarations }
    property OnInvoke: TInvokeEvent read FOnInvoke write FOnInvoke;
  end;

implementation

uses
  ComObj;

procedure InterfaceConnect(const Source: IUnknown; const IID: TIID;
  const Sink: IUnknown; var Connection: LongInt);
var
  CPC: IConnectionPointContainer;
  CP: IConnectionPoint;
  i: HRESULT;
begin
  Connection := 0;
  if Succeeded(Source.QueryInterface(IConnectionPointContainer, CPC)) then
    if Succeeded(CPC.FindConnectionPoint(IID, CP)) then
      i := CP.Advise(Sink, Connection);
end;

procedure InterfaceDisconnect(const Source: IUnknown; const IID: TIID;
  var Connection: LongInt);
var
  CPC: IConnectionPointContainer;
  CP: IConnectionPoint;
begin
  if Connection <> 0 then
    if Succeeded(Source.QueryInterface(IConnectionPointContainer, CPC)) then
      if Succeeded(CPC.FindConnectionPoint(IID, CP)) then
        if Succeeded(CP.Unadvise(Connection)) then
          Connection := 0;
end;

{ TAbstractEventSink }
function TAbstractEventSink._AddRef: Integer; stdcall;
begin
  Result := 2;
end;

function TAbstractEventSink._Release: Integer; stdcall;
begin
  Result := 1;
end;

constructor TAbstractEventSink.Create(AOwner: TComponent);
begin
  inherited Create;
  FOwner := AOwner;
end;

destructor TAbstractEventSink.Destroy;
var
  p: Pointer;
begin
  Disconnect;

  inherited Destroy;
end;

function TAbstractEventSink.GetIDsOfNames(const IID: TGUID; Names: Pointer;
  NameCount, LocaleID: Integer; DispIDs: Pointer): HRESULT; stdcall;
begin
  Result := E_NOTIMPL;
end;

function TAbstractEventSink.GetTypeInfo(Index, LocaleID: Integer; out TypeInfo)
  : HRESULT; stdcall;
begin
  Result := E_NOTIMPL;
end;

function TAbstractEventSink.GetTypeInfoCount(out Count: Integer)
  : HRESULT; stdcall;
begin
  Count := 0;
  Result := S_OK;
end;

function TAbstractEventSink.Invoke(DispID: Integer; const IID: TGUID;
  LocaleID: Integer; Flags: Word; var Params;
  VarResult, ExcepInfo, ArgErr: Pointer): HRESULT; stdcall;
begin
  (FOwner as TEventSink).DoInvoke(DispID, IID, LocaleID, Flags, Params,
    VarResult, ExcepInfo, ArgErr);
  Result := S_OK;
end;

function TAbstractEventSink.QueryInterface(const IID: TGUID; out Obj)
  : HRESULT; stdcall;
begin
  // We need to return the event interface when it's asked for
  Result := E_NOINTERFACE;
  if GetInterface(IID, Obj) then
    Result := S_OK;
  if IsEqualGUID(IID, FDispIntfIID) and GetInterface(IDispatch, Obj) then
    Result := S_OK;
end;

procedure TAbstractEventSink.Connect(AnAppDispatch: IDispatch;
  const AnAppDispIntfIID: TGUID);
begin
  FDispIntfIID := AnAppDispIntfIID;
  FDispatch := AnAppDispatch;
  // Hook the sink up to the automation server
  InterfaceConnect(FDispatch, FDispIntfIID, Self, FConnection);
end;

procedure TAbstractEventSink.Disconnect;
begin
  if Assigned(FDispatch) then
  begin
    // Unhook the sink from the automation server
    InterfaceDisconnect(FDispatch, FDispIntfIID, FConnection);
    FDispatch := nil;
    FConnection := 0;
  end;
end;

{ TEventSink }

procedure TEventSink.Connect(AnAppDispatch: IDispatch;
  const AnAppDispIntfIID: TGUID);
begin
  FSink.Connect(AnAppDispatch, AnAppDispIntfIID);
end;

constructor TEventSink.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);

  FSink := TAbstractEventSink.Create(Self);
end;

destructor TEventSink.Destroy;
begin
  FSink.Free;

  inherited Destroy;
end;

procedure TEventSink.DoInvoke(DispID: Integer; const IID: TGUID;
  LocaleID: Integer; Flags: Word; var Params;
  VarResult, ExcepInfo, ArgErr: Pointer);
begin
  if Assigned(FOnInvoke) then
    FOnInvoke(Self, DispID, IID, LocaleID, Flags, TDispParams(Params),
      VarResult, ExcepInfo, ArgErr);
end;

end.

效果图: