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Torque/SDK/lib/mayasdk6/include/maya/MDGMessage.h

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+#ifndef _MDGMessage
+#define _MDGMessage
+//
+//-
+// ==========================================================================
+// Copyright  (C)  Alias Systems,  a division  of  Silicon Graphics  Limited.
+// All rights  reserved.  These coded  instructions,  statements and computer
+// programs  contain  unpublished information  proprietary to  Alias Systems,
+// a  division  of  Silicon  Graphics  Limited,  which  is  protected by  the
+// Canadian  and  US federal copyright law and  may not be disclosed to third
+// parties or  copied  or  duplicated,  in  whole  or in part,  without prior
+// written  consent  of Alias Systems, a division of Silicon Graphics Limited
+// ==========================================================================
+//+
+//
+// CLASS:    MDGMessage
+//
+// *****************************************************************************
+//
+// CLASS DESCRIPTION (MDGMessage)
+//
+// This class is used to register callbacks for dependency graph messages.
+// There are 4 add callback methods which will add callbacks for the
+// following messages
+//     Time change
+//     Node Added
+//     Node Removed
+//     Connection made or broken
+//
+// A filter can be specified for node added/removed messages. The default 
+// node type is "dependNode" which matches all nodes.
+// Each method returns an id which is used to remove the callback.
+//
+// To remove a callback use MMessage::removeCallback.
+// All callbacks that are registered by a plug-in must be removed by that
+// plug-in when it is unloaded. Failure to do so will result in a fatal error.
+//
+// *****************************************************************************
+
+#if defined __cplusplus
+
+// *****************************************************************************
+
+// INCLUDED HEADER FILES
+
+
+#include <maya/MMessage.h>
+#include <maya/MString.h>
+
+// *****************************************************************************
+
+// DECLARATIONS
+
+class MTime;
+class MObject;
+class MPlug;
+
+#define kDefaultNodeType "dependNode"
+
+// *****************************************************************************
+
+// CLASS DECLARATION (MDGMessage)
+
+/// Dependency graph messages 
+/**
+*/
+#if defined(_WIN32)
+#pragma warning(disable: 4522)
+#endif // _WIN32
+
+class OPENMAYA_EXPORT MDGMessage : public MMessage
+{ 
+public:
+	/// TimeChange callback
+	static MCallbackId	addTimeChangeCallback(
+								void (*func)( MTime& time,
+											  void * clientData ),
+								void * clientData = NULL,
+								MStatus * ReturnStatus = NULL );
+
+	/// ForceUpdate callback
+	static MCallbackId  addForceUpdateCallback(
+								void (*func)( MTime& time,
+								void * clientData ),
+								void * clientData = NULL,
+								MStatus * ReturnStatus = NULL );
+
+	/// NodeAdded callback
+	static MCallbackId	addNodeAddedCallback(
+								void (*func)( MObject& node,
+											  void* clientData ),
+								const MString& nodeType = kDefaultNodeType,
+								void * clientData = NULL,
+								MStatus * ReturnStatus = NULL );
+
+	/// NodeRemoved callback
+	static MCallbackId	addNodeRemovedCallback(
+								void (*func)( MObject& node,
+											  void* clientData ),
+								const MString& nodeType = kDefaultNodeType,
+								void * clientData = NULL,
+								MStatus * ReturnStatus = NULL );
+
+	/// Connection callback
+	static MCallbackId	addConnectionCallback(
+								void (*func)( MPlug& srcPlug,
+											  MPlug& destPlug,
+											  bool made,
+											  void* clientData ),
+								void * clientData = NULL,
+								MStatus * ReturnStatus = NULL );
+
+private: 
+	static const char* className();
+};
+
+#if defined(_WIN32)
+#pragma warning(default: 4522)
+#endif // _WIN32
+
+// *****************************************************************************
+
+#endif /* __cplusplus */
+#endif /* _MDGMessage */