source/COM/_StExpr.pas

(* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is TurboPower SysTools
 *
 * The Initial Developer of the Original Code is
 * TurboPower Software
 *
 * Portions created by the Initial Developer are Copyright (C) 1996-2002
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * ***** END LICENSE BLOCK ***** *)

{*********************************************************}
{*                   _STEXPR.PAS 3.00                    *}
{*********************************************************}

{$I STDEFINE.INC}
{$I STCOMDEF.INC}
unit _StExpr;

interface

uses
  ComObj, ActiveX, SysTools_TLB, StdVcl;

type
  TStExpr = class(TAutoObject, IStExpr)
   private
    FIsLicensed : Boolean;
   public
    procedure Initialize; override;
   protected { Protected declarations }
    { IStExpr methods }
    function AnalyzeExpr(const Expr: WideString): Double; safecall;
    function License(const Key: WideString): WordBool; safecall;
    { Protected declarations }
  end;

implementation

{$DEFINE UseMathUnit}
uses ComServ, StExpr {$IFDEF LICENSE}, StComLic {$ENDIF};

procedure TStExpr.Initialize;
begin
  inherited Initialize;
  {$IFDEF LICENSE}
  FIsLicensed := False;
  {$ELSE}
  FIsLicensed := True;
  {$ENDIF}
end;

{ ********** TStExpr Methods ************************************************************* }
function TStExpr.AnalyzeExpr(const Expr: WideString): Double;
begin
  {$IFDEF LICENSE}
   if (not FIsLicensed) or (not COMHasBeenLicensed) then
     OleError(CLASS_E_NOTLICENSED);
  {$ENDIF}
  Result := StExpr.AnalyzeExpr(Expr);
end;

function TStExpr.License(const Key: WideString): WordBool;
begin
  {$IFDEF LICENSE}
  Result := COMIsValidKey(Key);
  {$ELSE}
  Result := True;
  {$ENDIF}
  FIsLicensed := Result;
end;

initialization
  TAutoObjectFactory.Create(ComServer, TStExpr, Class_StExpr, ciMultiInstance, tmBoth);
end.

1	(* *** BEGIN LICENSE BLOCK ***
2	* Version: MPL 1.1
3	*
4	* The contents of this file are subject to the Mozilla Public License Version
5	* 1.1 (the "License"); you may not use this file except in compliance with
6	* the License. You may obtain a copy of the License at
7	* http://www.mozilla.org/MPL/
8	*
9	* Software distributed under the License is distributed on an "AS IS" basis,
10	* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
11	* for the specific language governing rights and limitations under the
12	* License.
13	*
14	* The Original Code is TurboPower SysTools
15	*
16	* The Initial Developer of the Original Code is
17	* TurboPower Software
18	*
19	* Portions created by the Initial Developer are Copyright (C) 1996-2002
20	* the Initial Developer. All Rights Reserved.
21	*
22	* Contributor(s):
23	*
24	* *** END LICENSE BLOCK *** *)
25
26	{*********************************************************}
27	{* _STEXPR.PAS 3.00 *}
28	{*********************************************************}
29
30	{$I STDEFINE.INC}
31	{$I STCOMDEF.INC}
32	unit _StExpr;
33
34	interface
35
36	uses
37	ComObj, ActiveX, SysTools_TLB, StdVcl;
38
39	type
40	TStExpr = class(TAutoObject, IStExpr)
41	private
42	FIsLicensed : Boolean;
43	public
44	procedure Initialize; override;
45	protected { Protected declarations }
46	{ IStExpr methods }
47	function AnalyzeExpr(const Expr: WideString): Double; safecall;
48	function License(const Key: WideString): WordBool; safecall;
49	{ Protected declarations }
50	end;
51
52	implementation
53
54	{$DEFINE UseMathUnit}
55	uses ComServ, StExpr {$IFDEF LICENSE}, StComLic {$ENDIF};
56
57	procedure TStExpr.Initialize;
58	begin
59	inherited Initialize;
60	{$IFDEF LICENSE}
61	FIsLicensed := False;
62	{$ELSE}
63	FIsLicensed := True;
64	{$ENDIF}
65	end;
66
67	{ ******** TStExpr Methods *********************************************************** }
68	function TStExpr.AnalyzeExpr(const Expr: WideString): Double;
69	begin
70	{$IFDEF LICENSE}
71	if (not FIsLicensed) or (not COMHasBeenLicensed) then
72	OleError(CLASS_E_NOTLICENSED);
73	{$ENDIF}
74	Result := StExpr.AnalyzeExpr(Expr);
75	end;
76
77	function TStExpr.License(const Key: WideString): WordBool;
78	begin
79	{$IFDEF LICENSE}
80	Result := COMIsValidKey(Key);
81	{$ELSE}
82	Result := True;
83	{$ENDIF}
84	FIsLicensed := Result;
85	end;
86
87	initialization
88	TAutoObjectFactory.Create(ComServer, TStExpr, Class_StExpr, ciMultiInstance, tmBoth);
89	end.
90