Added original SDK code for Alien Swarm.

common/IVGuiModule.h

@@ -0,0 +1,64 @@
+//========= Copyright <20> 1996-2005, Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef IVGUIMODULE_H
+#define IVGUIMODULE_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "interface.h"
+#include <vgui/VGUI.h>
+
+//-----------------------------------------------------------------------------
+// Purpose: Standard interface to loading vgui modules
+//-----------------------------------------------------------------------------
+abstract_class IVGuiModule : public IBaseInterface
+{
+public:
+	// called first to setup the module with the vgui
+	// returns true on success, false on failure
+	virtual bool Initialize(CreateInterfaceFn *vguiFactories, int factoryCount) = 0;
+
+	// called after all the modules have been initialized
+	// modules should use this time to link to all the other module interfaces
+	virtual bool PostInitialize(CreateInterfaceFn *modules, int factoryCount) = 0;
+
+	// called when the module is selected from the menu or otherwise activated
+	virtual bool Activate() = 0;
+
+	// returns true if the module is successfully initialized and available
+	virtual bool IsValid() = 0;
+
+	// requests that the UI is temporarily disabled and all data files saved
+	virtual void Deactivate() = 0;
+
+	// restart from a Deactivate()
+	virtual void Reactivate() = 0;
+
+	// called when the module is about to be shutdown
+	virtual void Shutdown() = 0;
+
+	// returns a handle to the main module panel
+	virtual vgui::VPANEL GetPanel() = 0;
+
+	// sets the parent of the main module panel
+	virtual void SetParent(vgui::VPANEL parent) = 0;
+
+	// messages sent through through the panel returned by GetPanel():
+	//
+	//  "ConnectedToGame"	"ip" "port" "gamedir"
+	//	"DisconnectedFromGame"
+	//  "ActiveGameName"	"name"
+	//	"LoadingStarted"	"type"	"name"
+	//  "LoadingFinished"	"type"	"name"
+};
+
+#define VGUIMODULE_INTERFACE_VERSION "VGuiModule002"
+
+
+#endif // IVGUIMODULE_H