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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2008 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module dwt.dnd.TransferData;
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14
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15
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16 /**
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17 * The <code>TransferData</code> class is a platform specific data structure for
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18 * describing the type and the contents of data being converted by a transfer agent.
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19 *
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20 * <p>As an application writer, you do not need to know the specifics of
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21 * TransferData. TransferData instances are passed to a subclass of Transfer
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22 * and the Transfer object manages the platform specific issues.
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23 * You can ask a Transfer subclass if it can handle this data by calling
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24 * Transfer.isSupportedType(transferData).</p>
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25 *
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26 * <p>You should only need to become familiar with the fields in this class if you
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27 * are implementing a Transfer subclass and you are unable to subclass the
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28 * ByteArrayTransfer class.</p>
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29 *
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30 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
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31 */
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32 public class TransferData {
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33 /**
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34 * The type is a unique identifier of a system format or user defined format.
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35 * (Warning: This field is platform dependent)
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36 * <p>
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37 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT
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38 * public API. It is marked public only so that it can be shared
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39 * within the packages provided by DWT. It is not available on all
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40 * platforms and should never be accessed from application code.
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41 * </p>
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42 */
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43 public void* type;
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44
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45 /**
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46 * Specifies the number of units in pValue.
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47 * (Warning: This field is platform dependent)
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48 * <p>
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49 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT
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50 * public API. It is marked public only so that it can be shared
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51 * within the packages provided by DWT. It is not available on all
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52 * platforms and should never be accessed from application code.
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53 * </p>
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54 *
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55 * @see TransferData#format for the size of one unit
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56 */
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57 public int length;
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58
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59 /**
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60 * Specifies the size in bits of a single unit in pValue.
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61 * (Warning: This field is platform dependent)
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62 * <p>
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63 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT
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64 * public API. It is marked public only so that it can be shared
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65 * within the packages provided by DWT. It is not available on all
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66 * platforms and should never be accessed from application code.
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67 * </p>
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68 *
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69 * This is most commonly 8 bits.
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70 */
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71 public int format;
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72
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73 /**
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74 * Pointer to the data being transferred.
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75 * (Warning: This field is platform dependent)
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76 * <p>
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77 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT
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78 * public API. It is marked public only so that it can be shared
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79 * within the packages provided by DWT. It is not available on all
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80 * platforms and should never be accessed from application code.
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81 * </p>
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82 */
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83 public char* pValue;
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84
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85 /**
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86 * The result field contains the result of converting a
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87 * java data type into a platform specific value.
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88 * (Warning: This field is platform dependent)
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89 * <p>
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90 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT
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91 * public API. It is marked public only so that it can be shared
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92 * within the packages provided by DWT. It is not available on all
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93 * platforms and should never be accessed from application code.
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94 * </p>
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95 * <p>The value of result is 1 if the conversion was successful.
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96 * The value of result is 0 if the conversion failed.</p>
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97 */
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98 public int result;
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99
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100 }
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