Adding new PluginVirtualDesktops plugin from Patrick at Dexpot

Change to Build.py and Rainmeter.sln to support new plugin
New Example.rmskin for Rainstaller

Plugins/PluginVirtualDesktops/VDMeasure.h

@@ -0,0 +1,65 @@
+/*
+  Copyright (C) 2010 Patrick Dubbert
+
+  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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+*/
+
+#pragma once
+
+#include <windows.h>
+
+class VDMeasure
+{
+public:
+	VDMeasure(HMODULE instance, UINT id) { hInstance = instance; ID = id; };
+	virtual ~VDMeasure(void) {};
+
+/*
+  This function is called when the measure is initialized.
+  The function must return the maximum value that can be measured. 
+  The return value can also be 0, which means that Rainmeter will
+  track the maximum value automatically. The parameters for this
+  function are:
+
+  iniFile   The name of the ini-file (usually Rainmeter.ini)
+  section   The name of the section in the ini-file for this measure
+*/
+	virtual UINT Initialize(LPCTSTR iniFile, LPCTSTR section) = 0;
+
+/*
+  If the measure needs to free resources before quitting.
+  The plugin can export Finalize function, which is called
+  when Rainmeter quits (or refreshes).
+*/
+	virtual void Finalize() = 0;
+
+/*
+  This function is called when new value should be measured.
+  The function returns the new value.
+*/
+	virtual UINT Update() = 0;
+
+/*
+  This function is called when the value should be
+  returned as a string.
+*/
+	virtual LPCTSTR GetString(UINT flags) = 0;
+
+	virtual void ExecuteBang(LPCTSTR args) = 0;
+
+protected:
+	static HMODULE hInstance;
+	UINT ID;
+};