86 lines
2.6 KiB
ObjectPascal
86 lines
2.6 KiB
ObjectPascal
unit UniqueInstanceRaw;
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{
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UniqueInstance is a component to allow only a instance by program
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Copyright (C) 2006 Luiz Americo Pereira Camara
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pascalive@bol.com.br
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This library is free software; you can redistribute it and/or modify it
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under the terms of the GNU Library General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at your
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option) any later version with the following modification:
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent modules,and
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to copy and distribute the resulting executable under terms of your choice,
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provided that you also meet, for each linked independent module, the terms
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and conditions of the license of that module. An independent module is a
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module which is not derived from or based on this library. If you modify
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this library, you may extend this exception to your version of the library,
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but you are not obligated to do so. If you do not wish to do so, delete this
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exception statement from your version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
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for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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}
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{$mode objfpc}{$H+}
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interface
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uses
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Classes, SysUtils;
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function InstanceRunning(const Identifier: String; SendParameters: Boolean = False; DoInitServer: Boolean = True): Boolean;
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function InstanceRunning: Boolean;
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implementation
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uses
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SimpleIpc, UniqueInstanceBase;
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function InstanceRunning(const Identifier: String; SendParameters: Boolean; DoInitServer: Boolean): Boolean;
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var
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Client: TSimpleIPCClient;
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begin
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Client := TSimpleIPCClient.Create(nil);
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with Client do
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try
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ServerId := GetServerId(Identifier);
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Result := Client.ServerRunning;
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if not Result then
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begin
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if DoInitServer then
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InitializeUniqueServer(ServerID);
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end
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else
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// an instance already exists
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if SendParameters then
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begin
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Active := True;
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SendStringMessage(ParamCount, GetFormattedParams);
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end;
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finally
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Free;
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end;
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end;
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function InstanceRunning: Boolean;
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begin
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Result := InstanceRunning('');
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end;
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end.
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