Added handling of RetroShare protocol under Windows.

Added new command line parameter "-r retroshare://..." for adding links to the registered running RetroShare.
Recompile of the GUI needed.

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@4156 b45a01b8-16f6-495d-af2f-9b41ad6348cc

retroshare-gui/src/util/EventReceiver.h

@@ -0,0 +1,61 @@
+/****************************************************************
+ *  RetroShare is distributed under the following license:
+ *
+ *  Copyright (C) 2006,2007 crypton
+ *
+ *  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; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  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., 51 Franklin Street, Fifth Floor, 
+ *  Boston, MA  02110-1301, USA.
+ ****************************************************************/
+ 
+#ifndef _EVENTRECEIVER_H
+#define _EVENTRECEIVER_H
+
+#include <QWidget>
+#include <QSharedMemory>
+
+class QUrl;
+
+class EventReceiver : public
+#ifdef WINDOWS_SYS
+	QWidget
+#else
+	QObject
+#endif
+{
+	Q_OBJECT
+
+public:
+	EventReceiver();
+	~EventReceiver();
+
+	bool start();
+	bool sendRetroShareLink(const QString& link);
+
+signals:
+	void linkReceived(const QUrl& url);
+
+private:
+	void showNoRunningInstanceFound();
+	void received(const QString& url);
+
+#ifdef WINDOWS_SYS
+	/* Extend QWidget with a class that will capture the WM_COPYDATA messages */
+	bool winEvent (MSG* message, long* result);
+#endif // WINDOWS_SYS
+
+	QSharedMemory sharedMMemory;
+};
+
+#endif