/******************************************************************************* * Copyright (c) 2000, 2004 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Common Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/cpl-v10.html *  * Contributors: *     IBM Corporation - initial API and implementation *******************************************************************************/package org.eclipse.swt.dnd;import org.eclipse.swt.internal.ole.win32.*;/** * The <code>TransferData</code> class is a platform specific data structure for * describing the type and the contents of data being converted by a transfer agent. * * <p>As an application writer, you do not need to know the specifics of  * TransferData.  TransferData instances are passed to a subclass of Transfer  * and the Transfer object manages the platform specific issues.   * You can ask a Transfer subclass if it can handle this data by calling  * Transfer.isSupportedType(transferData).</p> * * <p>You should only need to become familiar with the fields in this class if you  * are implementing a Transfer subclass and you are unable to subclass the  * ByteArrayTransfer class.</p> */public class TransferData {	/**	 * The type is a unique identifier of a system format or user defined format.	 * (Warning: This field is platform dependent)	 */	public int type;		/**	 * The formatetc structure is a generalized data transfer format, enhanced to 	 * encompass a target device, the aspect, or view of the data, and 	 * a storage medium.	 * (Warning: This field is platform dependent)	 */	public FORMATETC formatetc;		/**	 * The stgmedium structure is a generalized global memory handle used for 	 * data transfer operations.	 * (Warning: This field is platform dependent)	 */	public STGMEDIUM stgmedium;	/**	 * The result field contains the result of converting a	 * java data type into a platform specific value.	 * (Warning: This field is platform dependent)	 *  	 * <p>The value of result is 1 if the conversion was successful.	 * The value of result is 0 if the conversion failed.</p>	 */	public int result = COM.E_FAIL;	/**	 * The pIDataObject is the address of an IDataObject OLE Interface which 	 * provides access to the data associated with the transfer.	 * (Warning: This field is platform dependent)	 */	public int pIDataObject;		static boolean sameType(TransferData data1, TransferData data2) {		if (data1 == data2) return true;		if (data1 == null || data2 == null) return false;		return (data1.type == data2.type &&				data1.formatetc.cfFormat == data2.formatetc.cfFormat &&		    	data1.formatetc.dwAspect == data2.formatetc.dwAspect && 		    	data1.formatetc.tymed == data2.formatetc.tymed);	}	}