tpsystools_4.04/source/StDbBarC.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 ***** *)

{*********************************************************}
{* SysTools: StDbBarC.pas 4.04                           *}
{*********************************************************}
{* SysTools: data aware bar code components              *}
{*********************************************************}

{$I StDefine.inc}

unit StDbBarC;

interface

uses
  Windows, Classes, ClipBrd, Controls, Graphics, Messages, SysUtils,
  Db, DbCtrls, DbTables,
  StConst, StBarc;

type
  TStDbBarCode = class(TStBarCode)
  protected {private}
    {.Z+}
    FDataLink : TFieldDataLink;

    procedure DataChange(Sender : TObject);
    function GetDataField : string;
    function GetDataSource : TDataSource;
    procedure SetDataField(const Value : string);
    procedure SetDataSource(Value : TDataSource);

  public
    constructor Create(AOwner : TComponent);
      override;
    destructor Destroy;
      override;
    {.Z+}
  published
    property Code
      stored False;

    property DataField : string
      read GetDataField
      write SetDataField;

    property DataSource : TDataSource
      read GetDataSource
      write SetDataSource;
  end;


implementation


{*** TStDbBarCode ***}

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

  FDataLink := TFieldDataLink.Create;
  FDataLink.OnDataChange := DataChange;
end;

procedure TStDbBarCode.DataChange(Sender : TObject);
begin
  if FDataLink.Field = nil then
    Code := '12345678922'
  else
    Code := FDataLink.Field.DisplayText;
end;

destructor TStDbBarCode.Destroy;
begin
  FDataLink.OnDataChange := nil;
  FDataLink.Free;
  FDataLink := nil;

  inherited Destroy;
end;

function TStDbBarCode.GetDataField : string;
begin
  Result := FDataLink.FieldName;
end;

function TStDbBarCode.GetDataSource : TDataSource;
begin
  Result := FDataLink.DataSource
end;

procedure TStDbBarCode.SetDataField(const Value : string);
begin
  FDataLink.FieldName := Value;
end;

procedure TStDbBarCode.SetDataSource(Value : TDataSource);
begin
  FDataLink.DataSource := Value;
end;


end.
1	torben	2671	(* *** 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			{* SysTools: StDbBarC.pas 4.04 *}
28			{*********************************************************}
29			{* SysTools: data aware bar code components *}
30			{*********************************************************}
31
32			{$I StDefine.inc}
33
34			unit StDbBarC;
35
36			interface
37
38			uses
39			Windows, Classes, ClipBrd, Controls, Graphics, Messages, SysUtils,
40			Db, DbCtrls, DbTables,
41			StConst, StBarc;
42
43			type
44			TStDbBarCode = class(TStBarCode)
45			protected {private}
46			{.Z+}
47			FDataLink : TFieldDataLink;
48
49			procedure DataChange(Sender : TObject);
50			function GetDataField : string;
51			function GetDataSource : TDataSource;
52			procedure SetDataField(const Value : string);
53			procedure SetDataSource(Value : TDataSource);
54
55			public
56			constructor Create(AOwner : TComponent);
57			override;
58			destructor Destroy;
59			override;
60			{.Z+}
61			published
62			property Code
63			stored False;
64
65			property DataField : string
66			read GetDataField
67			write SetDataField;
68
69			property DataSource : TDataSource
70			read GetDataSource
71			write SetDataSource;
72			end;
73
74
75			implementation
76
77
78			{* TStDbBarCode *}
79
80			constructor TStDbBarCode.Create(AOwner : TComponent);
81			begin
82			inherited Create(AOwner);
83
84			FDataLink := TFieldDataLink.Create;
85			FDataLink.OnDataChange := DataChange;
86			end;
87
88			procedure TStDbBarCode.DataChange(Sender : TObject);
89			begin
90			if FDataLink.Field = nil then
91			Code := '12345678922'
92			else
93			Code := FDataLink.Field.DisplayText;
94			end;
95
96			destructor TStDbBarCode.Destroy;
97			begin
98			FDataLink.OnDataChange := nil;
99			FDataLink.Free;
100			FDataLink := nil;
101
102			inherited Destroy;
103			end;
104
105			function TStDbBarCode.GetDataField : string;
106			begin
107			Result := FDataLink.FieldName;
108			end;
109
110			function TStDbBarCode.GetDataSource : TDataSource;
111			begin
112			Result := FDataLink.DataSource
113			end;
114
115			procedure TStDbBarCode.SetDataField(const Value : string);
116			begin
117			FDataLink.FieldName := Value;
118			end;
119
120			procedure TStDbBarCode.SetDataSource(Value : TDataSource);
121			begin
122			FDataLink.DataSource := Value;
123			end;
124
125
126			end.