Delphi Magazine Collection 2001/Delphi Magazine Collection 20001 (2001).iso/DISKS/Issue54/CCorn/Subscriber_TLB.pas

Pascal/Delphi Source File | 2000-01-10 | 9.1 KB | 263 lines

unit Subscriber_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 1/10/2000 7:29:20 PM 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 $IFDEF blocks. However, such items must still be
// programmatically created via a method of the appropriate CoClass before
// they can be used.
// ************************************************************************ //
// Type Lib: C:\My Documents\DelphiMag\Feb00\Events\Subscriber.tlb (1)
// IID\LCID: {99E9A8B0-EF81-40E5-BDC2-08AD7F79D452}\0
// Helpfile:
// DepndLst:
//   (1) v2.0 stdole, (C:\WINNT\System32\stdole2.tlb)
//   (2) v4.0 StdVCL, (C:\WINNT\System32\STDVCL40.DLL)
//   (3) v1.0 Publisher, (C:\My Documents\DelphiMag\Feb00\Events\Publisher.dll)
// ************************************************************************ //
{$TYPEDADDRESS OFF} // Unit must be compiled without type-checked pointers.
interface

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

// *********************************************************************//
// 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
  SubscriberMajorVersion = 1;
  SubscriberMinorVersion = 0;

  LIBID_Subscriber: TGUID = '{99E9A8B0-EF81-40E5-BDC2-08AD7F79D452}';

  IID_ISubObj: TGUID = '{058E8DFF-0AD5-410A-B891-2C51818D2032}';
  CLASS_SubObj: TGUID = '{F57BF8DC-A3B4-4363-9049-4F058F3AE753}';
type

// *********************************************************************//
// Forward declaration of types defined in TypeLibrary
// *********************************************************************//
  ISubObj = interface;
  ISubObjDisp = dispinterface;

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


// *********************************************************************//
// Interface: ISubObj
// Flags:     (4416) Dual OleAutomation Dispatchable
// GUID:      {058E8DFF-0AD5-410A-B891-2C51818D2032}
// *********************************************************************//
  ISubObj = interface(IDispatch)
    ['{058E8DFF-0AD5-410A-B891-2C51818D2032}']
  end;

// *********************************************************************//
// DispIntf:  ISubObjDisp
// Flags:     (4416) Dual OleAutomation Dispatchable
// GUID:      {058E8DFF-0AD5-410A-B891-2C51818D2032}
// *********************************************************************//
  ISubObjDisp = dispinterface
    ['{058E8DFF-0AD5-410A-B891-2C51818D2032}']
  end;

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


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

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


procedure Register;

implementation

uses ComObj;

class function CoSubObj.Create: ISubObj;
begin
  Result := CreateComObject(CLASS_SubObj) as ISubObj;
end;

class function CoSubObj.CreateRemote(const MachineName: string): ISubObj;
begin
  Result := CreateRemoteComObject(MachineName, CLASS_SubObj) as ISubObj;
end;

procedure TSubObj.InitServerData;
const
  CServerData: TServerData = (
    ClassID:   '{F57BF8DC-A3B4-4363-9049-4F058F3AE753}';
    IntfIID:   '{058E8DFF-0AD5-410A-B891-2C51818D2032}';
    EventIID:  '';
    LicenseKey: nil;
    Version: 500);
begin
  ServerData := @CServerData;
end;

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

procedure TSubObj.ConnectTo(svrIntf: ISubObj);
begin
  Disconnect;
  FIntf := svrIntf;
end;

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

function TSubObj.GetDefaultInterface: ISubObj;
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 TSubObj.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
{$IFDEF LIVE_SERVER_AT_DESIGN_TIME}
  FProps := TSubObjProperties.Create(Self);
{$ENDIF}
end;

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

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

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

function TSubObjProperties.GetDefaultInterface: ISubObj;
begin
  Result := FServer.DefaultInterface;
end;

{$ENDIF}

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

end.