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lib/mayasdk7/include/maya/MTimerMessage.h

@@ -0,0 +1,98 @@
+#ifndef _MTimerMessage
+#define _MTimerMessage
+//
+//-
+// ==========================================================================
+// Copyright (C) 1995 - 2005 Alias Systems Corp. and/or its licensors.  All
+// rights reserved.
+//
+// The coded instructions, statements, computer programs, and/or related
+// material (collectively the "Data") in these files contain unpublished
+// information proprietary to Alias Systems Corp. ("Alias") and/or its
+// licensors, which is protected by Canadian and US federal copyright law and
+// by international treaties.
+//
+// The Data may not be disclosed or distributed to third parties or be copied
+// or duplicated, in whole or in part, without the prior written consent of
+// Alias.
+//
+// THE DATA IS PROVIDED "AS IS". ALIAS HEREBY DISCLAIMS ALL WARRANTIES RELATING
+// TO THE DATA, INCLUDING, WITHOUT LIMITATION, ANY AND ALL EXPRESS OR IMPLIED
+// WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND/OR FITNESS FOR A
+// PARTICULAR PURPOSE. IN NO EVENT SHALL ALIAS BE LIABLE FOR ANY DAMAGES
+// WHATSOEVER, WHETHER DIRECT, INDIRECT, SPECIAL, OR PUNITIVE, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, OR IN EQUITY,
+// ARISING OUT OF ACCESS TO, USE OF, OR RELIANCE UPON THE DATA.
+// ==========================================================================
+//+
+//
+// CLASS:    MTimerMessage
+//
+// ****************************************************************************
+//
+// CLASS DESCRIPTION (MTimerMessage)
+//
+// This class is used to register callbacks that are based on a fixed
+// time interval.  Unlike other callbacks, a timer callback is
+// executed with the highest priority within Maya and take precidence
+// over *all* other Maya events.  Use with care as it is possible to
+// construct a callback that will prevent any other part of Maya from
+// running.
+//
+// If the execution time of a callback exceeds its period/2 the timer
+// will be reset.  This will give Maya 1 period in which to do other
+// things.
+//
+// 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>
+
+// ****************************************************************************
+//
+// DECLARATIONS
+//
+// ****************************************************************************
+//
+// CLASS DECLARATION (MTimerMessage)
+
+#ifdef _WIN32
+#pragma warning(disable: 4522)
+#endif // _WIN32
+
+/// Class used to register callbacks that are based on a fixed time interval.
+class OPENMAYA_EXPORT MTimerMessage : public MMessage
+{ 
+public:
+	typedef void (*sleepCallbackPtr)();
+	///
+	static MCallbackId	addTimerCallback(
+								float period,
+								void (*func)( float elapsedTime, float lastTime, void* clientData ),
+								void * clientData = NULL,
+								MStatus * ReturnStatus = NULL );
+	///
+	static MStatus setSleepCallback( sleepCallbackPtr sleepFunc );
+	///
+	static sleepCallbackPtr sleepCallback( );
+
+private: 
+	static const char* className();
+};
+
+#ifdef _WIN32
+#pragma warning(default: 4522)
+#endif // _WIN32
+
+// ****************************************************************************
+
+#endif /* __cplusplus */
+#endif /* _MTimerMessage */