/*******************************************************************************
* Copyright (c) 2000, 2012 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.dnd;
import org.eclipse.swt.internal.ole.win32.*;
/**
* The TransferData
class is a platform specific data structure for
* describing the type and the contents of data being converted by a transfer agent.
*
*
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).
* *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.
* * @see Sample code and further information */ public class TransferData { /** * The type is a unique identifier of a system format or user defined format. * (Warning: This field is platform dependent) ** IMPORTANT: This field is not part of the SWT * public API. It is marked public only so that it can be shared * within the packages provided by SWT. It is not available on all * platforms and should never be accessed from application code. *
* * @noreference This field is not intended to be referenced by clients. */ 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) ** IMPORTANT: This field is not part of the SWT * public API. It is marked public only so that it can be shared * within the packages provided by SWT. It is not available on all * platforms and should never be accessed from application code. *
* * @noreference This field is not intended to be referenced by clients. */ public FORMATETC formatetc; /** * The stgmedium structure is a generalized global memory handle used for * data transfer operations. * (Warning: This field is platform dependent) ** IMPORTANT: This field is not part of the SWT * public API. It is marked public only so that it can be shared * within the packages provided by SWT. It is not available on all * platforms and should never be accessed from application code. *
* * @noreference This field is not intended to be referenced by clients. */ 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) ** IMPORTANT: This field is not part of the SWT * public API. It is marked public only so that it can be shared * within the packages provided by SWT. It is not available on all * platforms and should never be accessed from application code. *
*The value of result is 1 if the conversion was successful. * The value of result is 0 if the conversion failed.
* * @noreference This field is not intended to be referenced by clients. */ 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) ** IMPORTANT: This field is not part of the SWT * public API. It is marked public only so that it can be shared * within the packages provided by SWT. It is not available on all * platforms and should never be accessed from application code. *
* * @noreference This field is not intended to be referenced by clients. */ public long 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); } }