Delphi Magazine Collection 2001/Delphi Magazine Collection 20001 (2001).iso/DISKS/Issue51/SafeCall/ComServer_TLB.pas

Pascal/Delphi Source File | 1999-08-19 | 9.8 KB | 286 lines

unit ComServer_TLB;

// ************************************************************************ //
// WARNING
// -------
// The types declared in this file were generated from data read from a
// Type Library. If this type library is explicitly or indirectly (via
// another type library referring to this type library) re-imported, or the
// 'Refresh' command of the Type Library Editor activated while editing the
// Type Library, the contents of this file will be regenerated and all
// manual modifications will be lost.
// ************************************************************************ //

// PASTLWTR : $Revision:   1.88  $
// File generated on 19/08/99 17:58:31 from Type Library described below.

// *************************************************************************//
// NOTE:
// Items guarded by $IFDEF_LIVE_SERVER_AT_DESIGN_TIME are used by properties
// which return objects that may need to be explicitly created via a function
// call prior to any access via the property. These items have been disabled
// in order to prevent accidental use from within the object inspector. You
// may enable them by defining LIVE_SERVER_AT_DESIGN_TIME or by selectively
// removing them from the $IFDEF blocks. However, such items must still be
// programmatically created via a method of the appropriate CoClass before
// they can be used.
// ************************************************************************ //
// Type Lib: D:\Magazines\Work In Progress\52 - Dec 99\Safecall\Files\ComServer.tlb (1)
// IID\LCID: {8DD636AC-5643-11D3-96EC-0060978E1359}\0
// Helpfile:
// DepndLst:
//   (1) v2.0 stdole, (C:\WINDOWS\SYSTEM\STDOLE2.TLB)
//   (2) v4.0 StdVCL, (C:\WINDOWS\SYSTEM\STDVCL40.DLL)
// ************************************************************************ //
{$TYPEDADDRESS OFF} // Unit must be compiled without type-checked pointers.
interface

uses Windows, ActiveX, Classes, Graphics, OleServer, OleCtrls, StdVCL;

// *********************************************************************//
// GUIDS declared in the TypeLibrary. Following prefixes are used:
//   Type Libraries     : LIBID_xxxx
//   CoClasses          : CLASS_xxxx
//   DISPInterfaces     : DIID_xxxx
//   Non-DISP interfaces: IID_xxxx
// *********************************************************************//
const
  // TypeLibrary Major and minor versions
  ComServerMajorVersion = 1;
  ComServerMinorVersion = 0;

  LIBID_ComServer: TGUID = '{8DD636AC-5643-11D3-96EC-0060978E1359}';

  IID_IErrorTrappingTest: TGUID = '{8DD636AD-5643-11D3-96EC-0060978E1359}';
  CLASS_ErrorTrappingTest: TGUID = '{8DD636AF-5643-11D3-96EC-0060978E1359}';
type

// *********************************************************************//
// Forward declaration of types defined in TypeLibrary
// *********************************************************************//
  IErrorTrappingTest = interface;

// *********************************************************************//
// Declaration of CoClasses defined in Type Library
// (NOTE: Here we map each CoClass to its Default Interface)
// *********************************************************************//
  ErrorTrappingTest = IErrorTrappingTest;


// *********************************************************************//
// Interface: IErrorTrappingTest
// Flags:     (256) OleAutomation
// GUID:      {8DD636AD-5643-11D3-96EC-0060978E1359}
// *********************************************************************//
  IErrorTrappingTest = interface(IUnknown)
    ['{8DD636AD-5643-11D3-96EC-0060978E1359}']
    procedure Error1; safecall;
    procedure Error2; safecall;
    procedure Error3; safecall;
    procedure Error4; safecall;
    procedure Error5; safecall;
  end;

// *********************************************************************//
// The Class CoErrorTrappingTest provides a Create and CreateRemote method to
// create instances of the default interface IErrorTrappingTest exposed by
// the CoClass ErrorTrappingTest. The functions are intended to be used by
// clients wishing to automate the CoClass objects exposed by the
// server of this typelibrary.
// *********************************************************************//
  CoErrorTrappingTest = class
    class function Create: IErrorTrappingTest;
    class function CreateRemote(const MachineName: string): IErrorTrappingTest;
  end;


// *********************************************************************//
// OLE Server Proxy class declaration
// Server Object    : TErrorTrappingTest
// Help String      : ErrorTrappingTest Object
// Default Interface: IErrorTrappingTest
// Def. Intf. DISP? : No
// Event   Interface:
// TypeFlags        : (2) CanCreate
// *********************************************************************//
{$IFDEF LIVE_SERVER_AT_DESIGN_TIME}
  TErrorTrappingTestProperties= class;
{$ENDIF}
  TErrorTrappingTest = class(TOleServer)
  private
    FIntf:        IErrorTrappingTest;
{$IFDEF LIVE_SERVER_AT_DESIGN_TIME}
    FProps:       TErrorTrappingTestProperties;
    function      GetServerProperties: TErrorTrappingTestProperties;
{$ENDIF}
    function      GetDefaultInterface: IErrorTrappingTest;
  protected
    procedure InitServerData; override;
  public
    constructor Create(AOwner: TComponent); override;
    destructor  Destroy; override;
    procedure Connect; override;
    procedure ConnectTo(svrIntf: IErrorTrappingTest);
    procedure Disconnect; override;
    procedure Error1;
    procedure Error2;
    procedure Error3;
    procedure Error4;
    procedure Error5;
    property  DefaultInterface: IErrorTrappingTest read GetDefaultInterface;
  published
{$IFDEF LIVE_SERVER_AT_DESIGN_TIME}
    property Server: TErrorTrappingTestProperties read GetServerProperties;
{$ENDIF}
  end;

{$IFDEF LIVE_SERVER_AT_DESIGN_TIME}
// *********************************************************************//
// OLE Server Properties Proxy Class
// Server Object    : TErrorTrappingTest
// (This object is used by the IDE's Property Inspector to allow editing
//  of the properties of this server)
// *********************************************************************//
 TErrorTrappingTestProperties = class(TPersistent)
  private
    FServer:    TErrorTrappingTest;
    function    GetDefaultInterface: IErrorTrappingTest;
    constructor Create(AServer: TErrorTrappingTest);
  protected
  public
    property DefaultInterface: IErrorTrappingTest read GetDefaultInterface;
  published
  end;
{$ENDIF}


procedure Register;

implementation

uses ComObj;

class function CoErrorTrappingTest.Create: IErrorTrappingTest;
begin
  Result := CreateComObject(CLASS_ErrorTrappingTest) as IErrorTrappingTest;
end;

class function CoErrorTrappingTest.CreateRemote(const MachineName: string): IErrorTrappingTest;
begin
  Result := CreateRemoteComObject(MachineName, CLASS_ErrorTrappingTest) as IErrorTrappingTest;
end;

procedure TErrorTrappingTest.InitServerData;
const
  CServerData: TServerData = (
    ClassID:   '{8DD636AF-5643-11D3-96EC-0060978E1359}';
    IntfIID:   '{8DD636AD-5643-11D3-96EC-0060978E1359}';
    EventIID:  '';
    LicenseKey: nil;
    Version: 500);
begin
  ServerData := @CServerData;
end;

procedure TErrorTrappingTest.Connect;
var
  punk: IUnknown;
begin
  if FIntf = nil then
  begin
    punk := GetServer;
    Fintf:= punk as IErrorTrappingTest;
  end;
end;

procedure TErrorTrappingTest.ConnectTo(svrIntf: IErrorTrappingTest);
begin
  Disconnect;
  FIntf := svrIntf;
end;

procedure TErrorTrappingTest.DisConnect;
begin
  if Fintf <> nil then
  begin
    FIntf := nil;
  end;
end;

function TErrorTrappingTest.GetDefaultInterface: IErrorTrappingTest;
begin
  if FIntf = nil then
    Connect;
  Assert(FIntf <> nil, 'DefaultInterface is NULL. Component is not connected to Server. You must call ''Connect'' or ''ConnectTo'' before this operation');
  Result := FIntf;
end;

constructor TErrorTrappingTest.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
{$IFDEF LIVE_SERVER_AT_DESIGN_TIME}
  FProps := TErrorTrappingTestProperties.Create(Self);
{$ENDIF}
end;

destructor TErrorTrappingTest.Destroy;
begin
{$IFDEF LIVE_SERVER_AT_DESIGN_TIME}
  FProps.Free;
{$ENDIF}
  inherited Destroy;
end;

{$IFDEF LIVE_SERVER_AT_DESIGN_TIME}
function TErrorTrappingTest.GetServerProperties: TErrorTrappingTestProperties;
begin
  Result := FProps;
end;
{$ENDIF}

procedure TErrorTrappingTest.Error1;
begin
  DefaultInterface.Error1;
end;

procedure TErrorTrappingTest.Error2;
begin
  DefaultInterface.Error2;
end;

procedure TErrorTrappingTest.Error3;
begin
  DefaultInterface.Error3;
end;

procedure TErrorTrappingTest.Error4;
begin
  DefaultInterface.Error4;
end;

procedure TErrorTrappingTest.Error5;
begin
  DefaultInterface.Error5;
end;

{$IFDEF LIVE_SERVER_AT_DESIGN_TIME}
constructor TErrorTrappingTestProperties.Create(AServer: TErrorTrappingTest);
begin
  inherited Create;
  FServer := AServer;
end;

function TErrorTrappingTestProperties.GetDefaultInterface: IErrorTrappingTest;
begin
  Result := FServer.DefaultInterface;
end;

{$ENDIF}

procedure Register;
begin
  RegisterComponents('Servers',[TErrorTrappingTest]);
end;

end.