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TreeViewEx.pas
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Pascal/Delphi Source File
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1999-01-06
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2KB
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78 lines
{*****************************************************************************
*
* TreeViewEx.pas - TTreeViewEx Component
*
* Copyright (c) 1998-99 Michael Haller
*
* Idea taken from Toolbox.
*
* Author: Michael Haller
* E-mail: michael@discountdrive.com
* Homepage: http://www.discountdrive.com/sunrise/
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation;
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
*----------------------------------------------------------------------------
*
* Revision history:
*
* DATE REV DESCRIPTION
* ----------- --- ----------------------------------------------------------
*
*****************************************************************************}
unit TreeViewEx;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
ComCtrls, ExtCtrls;
type
TTreeViewEx = class(TTreeView)
private
{ Private declarations }
procedure WMNotify(var Message: TWMNotify); message WM_NOTIFY;
protected
{ Protected declarations }
public
{ Public declarations }
published
{ Published declarations }
end;
procedure Register;
implementation
const
TTN_FIRST = 0-520;
TTN_NEEDTEXTW = TTN_FIRST - 10;
procedure TTreeViewEx.WMNotify(var Message: TWMNotify);
begin
if Message.NMHdr^.Code = TTN_NEEDTEXTW then
Message.Result := 1
else
inherited;
end;
procedure Register;
begin
RegisterComponents('Michael Haller', [TTreeViewEx]);
end;
end.