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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2006 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.ole.win32.Variant;
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14
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15 import dwt.DWT;
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16 import dwt.DWTException;
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17 import dwt.internal.ole.win32.extras;
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18 import dwt.internal.ole.win32.COM;
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19 import dwt.internal.ole.win32.COMTYPES;
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20 import dwt.internal.ole.win32.OAIDL;
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21 import dwt.internal.win32.OS;
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22
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23 import dwt.ole.win32.OleAutomation;
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24 import dwt.ole.win32.OLE;
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25
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26 import tango.util.Convert;
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27 import tango.text.convert.Format;
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28
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29 /**
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30 *
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31 * A Variant is a generic OLE mechanism for passing data of different types via a common interface.
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32 *
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33 * <p>It is used within the OleAutomation object for getting a property, setting a property or invoking
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34 * a method on an OLE Control or OLE Document.
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35 *
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36 */
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37 public final class Variant
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38 {
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39 /**
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40 * A variant always takes up 16 bytes, no matter what you
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41 * store in it. Objects, strings, and arrays are not physically
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42 * stored in the Variant; in these cases, four bytes of the
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43 * Variant are used to hold either an object reference, or a
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44 * pointer to the string or array. The actual data are stored elsewhere.
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45 */
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46 //public static final int sizeof = 16;
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47 private short type; // OLE.VT_* type
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48
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49 private bool booleanData;
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50 private byte byteData;
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51 private short shortData;
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52 private char charData;
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53 private int intData;
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54 private long longData;
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55 private float floatData;
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56 private double doubleData;
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57 private char[] stringData;
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58 private void* byRefPtr;
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59 private IDispatch dispatchData;
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60 private IUnknown unknownData;
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61
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62 /**
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63 * Invokes platform specific functionality to copy a variant
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64 * into operating system memory.
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65 * <p>
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66 * <b>IMPORTANT:</b> This method is <em>not</em> part of the public
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67 * API for <code>Variant</code>. It is marked public only so that it
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68 * can be shared within the packages provided by DWT. It is not
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69 * available on all platforms, and should never be called from
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70 * application code.
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71 * </p>
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72 *
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73 * @param pVarDest destination pointer to a variant
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74 * @param varSrc source <code>Variant</code>
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75 *
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76 * @since 3.3
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77 */
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78 public static void win32_copy (VARIANT* pVarDest, Variant varSrc) {
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79 varSrc.getData (pVarDest);
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80 }
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81
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82 /**
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83 * Invokes platform specific functionality to wrap a variant
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84 * that was allocated in operating system memory.
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85 * <p>
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86 * <b>IMPORTANT:</b> This method is <em>not</em> part of the public
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87 * API for <code>Variant</code>. It is marked public only so that it
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88 * can be shared within the packages provided by DWT. It is not
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89 * available on all platforms, and should never be called from
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90 * application code.
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91 * </p>
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92 *
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93 * @param pVariant pointer to a variant
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94 *
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95 * @return a new <code>Variant</code>
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96 *
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97 * @since 3.3
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98 */
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99 public static Variant win32_new (VARIANT* pVariant) {
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100 Variant variant = new Variant ();
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101 variant.setData (pVariant);
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102 return variant;
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103 }
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104
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105 /**
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106 * Create an empty Variant object with type VT_EMPTY.
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107 *
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108 * @since 2.0
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109 */
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110 public this(){
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111 type = COM.VT_EMPTY;
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112 }
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113 /**
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114 * Create a Variant object which represents a Java float as a VT_R4.
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115 *
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116 * @param val the Java float value that this Variant represents
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117 *
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118 */
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119 public this(float val) {
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120 type = COM.VT_R4;
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121 floatData = val;
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122
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123 }
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124 /**
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125 * Create a Variant object which represents a Java double as a VT_R8.
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126 *
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127 * @param val the Java double value that this Variant represents
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128 *
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129 * @since 3.2
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130 */
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131 public this(double val) {
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132 type = COM.VT_R8;
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133 doubleData = val;
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134 }
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135 /**
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136 * Create a Variant object which represents a Java int as a VT_I4.
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137 *
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138 * @param val the Java int value that this Variant represents
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139 *
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140 */
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141 public this(int val) {
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142 type = COM.VT_I4;
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143 intData = val;
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144 }
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145 public this(uint val) {
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146 type = COM.VT_I4;
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147 intData = val;
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148 }
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149 /**
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150 * Create a Variant object which contains a reference to the data being transferred.
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151 *
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152 * <p>When creating a VT_BYREF Variant, you must give the full Variant type
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153 * including VT_BYREF such as
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154 *
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155 * <pre><code>short byRefType = OLE.VT_BSTR | OLE.VT_BYREF</code></pre>.
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156 *
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157 * @param ptr a pointer to the data being transferred.
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158 * @param byRefType the type of the data being transferred such as OLE.VT_BSTR | OLE.VT_BYREF
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159 *
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160 */
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161 public this(void* ptr, ushort byRefType) {
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162 type = byRefType;
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163 byRefPtr = ptr;
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164 }
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165 /**
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166 * Create a Variant object which represents an IDispatch interface as a VT_Dispatch.
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167 *
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168 * @param automation the OleAutomation object that this Variant represents
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169 *
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170 */
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171 public this(OleAutomation automation) {
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172 type = COM.VT_DISPATCH;
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173 dispatchData = automation.getAddress();
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174 }
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175 /**
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176 * Create a Variant object which represents an IDispatch interface as a VT_Dispatch.
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177 * <p>The caller is expected to have appropriately invoked unknown.AddRef() before creating
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178 * this Variant.
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179 *
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180 * @since 2.0
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181 *
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182 * @param idispatch the IDispatch object that this Variant represents
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183 *
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184 */
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185 public this(IDispatch idispatch) {
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186 type = COM.VT_DISPATCH;
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187 dispatchData = idispatch;
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188 }
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189 /**
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190 * Create a Variant object which represents an IUnknown interface as a VT_UNKNOWN.
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191 *
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192 * <p>The caller is expected to have appropriately invoked unknown.AddRef() before creating
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193 * this Variant.
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194 *
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195 * @param unknown the IUnknown object that this Variant represents
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196 *
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197 */
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198 public this(IUnknown unknown) {
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199 type = COM.VT_UNKNOWN;
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200 unknownData = unknown;
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201 }
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202 /**
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203 * Create a Variant object which represents a Java long as a VT_I8.
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204 *
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205 * @param val the Java long value that this Variant represents
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206 *
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207 *@since 3.2
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208 */
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209 public this(long val) {
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210 type = COM.VT_I8;
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211 longData = val;
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212 }
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213 /**
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214 * Create a Variant object which represents a Java String as a VT_BSTR.
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215 *
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216 * @param string the Java String value that this Variant represents
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217 *
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218 */
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219 public this(char[] string) {
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220 type = COM.VT_BSTR;
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221 stringData = string;
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222 }
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223 /**
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224 * Create a Variant object which represents a Java short as a VT_I2.
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225 *
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226 * @param val the Java short value that this Variant represents
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227 *
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228 */
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229 public this(short val) {
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230 type = COM.VT_I2;
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231 shortData = val;
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232 }
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233 /**
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234 * Create a Variant object which represents a Java bool as a VT_BOOL.
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235 *
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236 * @param val the Java bool value that this Variant represents
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237 *
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238 */
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239 public this(bool val) {
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240 type = COM.VT_BOOL;
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241 booleanData = val;
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242 }
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243
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244 /**
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245 * Calling dispose will release resources associated with this Variant.
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246 * If the resource is an IDispatch or IUnknown interface, Release will be called.
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247 * If the resource is a ByRef pointer, nothing is released.
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248 *
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249 * @since 2.1
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250 */
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251 public void dispose() {
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252 if ((type & COM.VT_BYREF) is COM.VT_BYREF) {
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253 return;
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254 }
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255
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256 switch (type) {
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257 case COM.VT_DISPATCH :
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258 dispatchData.Release();
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259 break;
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260 case COM.VT_UNKNOWN :
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261 unknownData.Release();
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262 break;
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263 default:
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264 }
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265
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266 }
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267 /**
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268 * Returns the OleAutomation object represented by this Variant.
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269 *
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270 * <p>If this Variant does not contain an OleAutomation object, an attempt is made to
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271 * coerce the Variant type into an OleAutomation object. If this fails, an error is
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272 * thrown. Note that OleAutomation objects must be disposed when no longer
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273 * needed.
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274 *
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275 * @return the OleAutomation object represented by this Variant
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276 *
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277 * @exception DWTException <ul>
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278 * <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant can not be coerced into an OleAutomation object</li>
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279 * </ul>
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280 */
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281 public OleAutomation getAutomation() {
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282 if (type is COM.VT_EMPTY) {
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283 OLE.error(__FILE__, __LINE__, OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, -1);
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284 }
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285 if (type is COM.VT_DISPATCH) {
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286 return new OleAutomation(dispatchData);
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287 }
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288 // try to coerce the value to the desired type
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289 VARIANT oldPtr, newPtr;
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290 try {
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291 getData(&oldPtr);
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292 HRESULT result = COM.VariantChangeType(&newPtr, &oldPtr, 0, COM.VT_DISPATCH);
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293 if (result !is COM.S_OK)
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294 OLE.error(__FILE__, __LINE__, OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, result);
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295 Variant autoVar = new Variant();
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296 autoVar.setData(&newPtr);
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297 return autoVar.getAutomation();
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298 } finally {
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299 COM.VariantClear(&oldPtr);
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300 COM.VariantClear(&newPtr); // Note: This must absolutely be done AFTER the
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301 // OleAutomation object is created as Variant Clear
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302 // will result in a Release being performed on the
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303 // Dispatch object
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304 }
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305 }
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306 /**
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307 * Returns the IDispatch object represented by this Variant.
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308 *
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309 * <p>If this Variant does not contain an IDispatch object, an attempt is made to
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310 * coerce the Variant type into an IDIspatch object. If this fails, an error is
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311 * thrown.
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312 *
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313 * @since 2.0
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314 *
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315 * @return the IDispatch object represented by this Variant
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316 *
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317 * @exception DWTException <ul>
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318 * <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant can not be coerced into an IDispatch object</li>
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319 * </ul>
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320 */
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321 public IDispatch getDispatch() {
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322 if (type is COM.VT_EMPTY) {
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323 OLE.error(__FILE__, __LINE__, OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, -1);
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324 }
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325
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326 if (type is COM.VT_DISPATCH) {
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327 return dispatchData;
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328 }
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329 // try to coerce the value to the desired type
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330 VARIANT oldPtr, newPtr;
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331 try {
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332 getData(&oldPtr);
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333 HRESULT result = COM.VariantChangeType(&newPtr, &oldPtr, 0, COM.VT_DISPATCH);
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334 if (result !is COM.S_OK)
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335 OLE.error(__FILE__, __LINE__, OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, result);
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336 Variant autoVar = new Variant();
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337 autoVar.setData(&newPtr);
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338 return autoVar.getDispatch();
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339 } finally {
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340 COM.VariantClear(&oldPtr);
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341 COM.VariantClear(&newPtr); // Note: This must absolutely be done AFTER the
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342 // OleAutomation object is created as Variant Clear
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343 // will result in a Release being performed on the
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344 // Dispatch object
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345 }
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346 }
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347 /**
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348 * Returns the Java bool represented by this Variant.
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349 *
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350 * <p>If this Variant does not contain a Java bool, an attempt is made to
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351 * coerce the Variant type into a Java bool. If this fails, an error is thrown.
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352 *
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353 * @return the Java bool represented by this Variant
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354 *
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355 * @exception DWTException <ul>
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356 * <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant can not be coerced into a bool</li>
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357 * </ul>
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358 *
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359 */
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360 public bool getBoolean() {
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361 if (type is COM.VT_EMPTY) {
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362 OLE.error(__FILE__, __LINE__, OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, -1);
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363 }
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364 if (type is COM.VT_BOOL) {
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365 return booleanData;
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366 }
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367 // try to coerce the value to the desired type
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368 VARIANT oldPtr, newPtr;
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369 try {
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370 getData(&oldPtr);
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371 HRESULT result = COM.VariantChangeType(&newPtr, &oldPtr, 0, COM.VT_BOOL);
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372 if (result !is COM.S_OK)
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373 OLE.error(__FILE__, __LINE__, OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, result);
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374 Variant boolVar = new Variant();
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375 boolVar.setData(&newPtr);
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97
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376 return boolVar.getBoolean();
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377 } finally {
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378 COM.VariantClear(&oldPtr);
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379 COM.VariantClear(&newPtr);
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97
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380 }
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381 }
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382 /**
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383 * Returns a pointer to the referenced data represented by this Variant.
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384 *
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385 * <p>If this Variant does not contain a reference to data, zero is returned.
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386 *
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387 * @return a pointer to the referenced data represented by this Variant or 0
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388 *
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389 */
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390 public void* getByRef() {
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391 if (type is COM.VT_EMPTY) {
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392 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, -1);
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393 }
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394 if ((type & COM.VT_BYREF)is COM.VT_BYREF) {
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395 return byRefPtr;
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396 }
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397
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398 return null;
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399 }
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400 /**
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401 * Returns the Java byte represented by this Variant.
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402 *
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403 * <p>If this Variant does not contain a Java byte, an attempt is made to
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404 * coerce the Variant type into a Java byte. If this fails, an error is thrown.
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405 *
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406 * @return the Java byte represented by this Variant
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407 *
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408 * @exception DWTException <ul>
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409 * <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant can not be coerced into a byte</li>
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410 * </ul>
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411 *
|
|
|
412 * @since 3.3
|
|
|
413 */
|
|
|
414 public byte getByte() {
|
|
|
415 if (type is COM.VT_EMPTY) {
|
|
|
416 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, -1);
|
|
|
417 }
|
|
|
418 if (type is COM.VT_I1) {
|
|
|
419 return byteData;
|
|
|
420 }
|
|
|
421
|
|
|
422 // try to coerce the value to the desired type
|
|
98
|
423 VARIANT oldPtr, newPtr;
|
|
97
|
424 try {
|
|
98
|
425 getData(&oldPtr);
|
|
|
426 int result = COM.VariantChangeType(&newPtr, &oldPtr, 0, COM.VT_I1);
|
|
97
|
427 if (result !is COM.S_OK)
|
|
|
428 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, result);
|
|
|
429 Variant byteVar = new Variant();
|
|
98
|
430 byteVar.setData(&newPtr);
|
|
97
|
431 return byteVar.getByte();
|
|
|
432 } finally {
|
|
98
|
433 COM.VariantClear(&oldPtr);
|
|
|
434 COM.VariantClear(&newPtr);
|
|
97
|
435 }
|
|
|
436 }
|
|
|
437 /**
|
|
|
438 * Returns the Java char represented by this Variant.
|
|
|
439 *
|
|
|
440 * <p>If this Variant does not contain a Java char, an attempt is made to
|
|
|
441 * coerce the Variant type into a Java char. If this fails, an error is thrown.
|
|
|
442 *
|
|
|
443 * @return the Java char represented by this Variant
|
|
|
444 *
|
|
|
445 * @exception DWTException <ul>
|
|
|
446 * <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant can not be coerced into a char</li>
|
|
|
447 * </ul>
|
|
|
448 *
|
|
|
449 * @since 3.3
|
|
|
450 */
|
|
|
451 public char getChar() {
|
|
|
452 if (type is COM.VT_EMPTY) {
|
|
|
453 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, -1);
|
|
|
454 }
|
|
|
455 if (type is COM.VT_UI2) {
|
|
|
456 return charData;
|
|
|
457 }
|
|
|
458
|
|
|
459 // try to coerce the value to the desired type
|
|
98
|
460 VARIANT oldPtr, newPtr;
|
|
97
|
461 try {
|
|
98
|
462 getData(&oldPtr);
|
|
|
463 int result = COM.VariantChangeType(&newPtr, &oldPtr, 0, COM.VT_UI2);
|
|
97
|
464 if (result !is COM.S_OK)
|
|
|
465 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, result);
|
|
|
466 Variant charVar = new Variant();
|
|
98
|
467 charVar.setData(&newPtr);
|
|
97
|
468 return charVar.getChar();
|
|
|
469 } finally {
|
|
98
|
470 COM.VariantClear(&oldPtr);
|
|
|
471 COM.VariantClear(&newPtr);
|
|
97
|
472 }
|
|
|
473 }
|
|
|
474 void getData(VARIANT* pData){
|
|
|
475 if (pData is null) OLE.error(OLE.ERROR_OUT_OF_MEMORY);
|
|
|
476
|
|
|
477 COM.VariantInit(pData);
|
|
|
478
|
|
|
479 // set type
|
|
|
480 pData.vt = type;
|
|
|
481 if ((type & COM.VT_BYREF) is COM.VT_BYREF) {
|
|
|
482 COM.MoveMemory(pData, &type, 2);
|
|
|
483 COM.MoveMemory(pData + 8, &byRefPtr, 4);
|
|
|
484 return;
|
|
|
485 }
|
|
|
486
|
|
|
487 switch (type) {
|
|
|
488 case COM.VT_EMPTY :
|
|
|
489 case COM.VT_NULL :
|
|
|
490 COM.MoveMemory(pData, &type, 2);
|
|
|
491 break;
|
|
|
492 case COM.VT_BOOL :
|
|
|
493 COM.MoveMemory(pData, &type, 2);
|
|
|
494 auto v = booleanData ? COM.VARIANT_TRUE : COM.VARIANT_FALSE;
|
|
|
495 COM.MoveMemory(pData + 8, &v, 2);
|
|
|
496 break;
|
|
|
497 case COM.VT_I1 :
|
|
|
498 COM.MoveMemory(pData, &type, 2);
|
|
|
499 COM.MoveMemory(pData + 8, &byteData, 1);
|
|
|
500 break;
|
|
|
501 case COM.VT_I2 :
|
|
|
502 COM.MoveMemory(pData, &type, 2);
|
|
|
503 COM.MoveMemory(pData + 8, &shortData, 2);
|
|
|
504 break;
|
|
|
505 case COM.VT_UI2 :
|
|
|
506 COM.MoveMemory(pData, &type, 2);
|
|
|
507 COM.MoveMemory(pData + 8, &charData, 2);
|
|
|
508 break;
|
|
|
509 case COM.VT_I4 :
|
|
|
510 COM.MoveMemory(pData, &type, 2);
|
|
|
511 COM.MoveMemory(pData + 8, &intData, 4);
|
|
|
512 break;
|
|
|
513 case COM.VT_I8 :
|
|
|
514 COM.MoveMemory(pData, &type, 2);
|
|
|
515 COM.MoveMemory(pData + 8, &longData, 8);
|
|
|
516 break;
|
|
|
517 case COM.VT_R4 :
|
|
|
518 COM.MoveMemory(pData, &type, 2);
|
|
|
519 COM.MoveMemory(pData + 8, &floatData, 4);
|
|
|
520 break;
|
|
|
521 case COM.VT_R8 :
|
|
|
522 COM.MoveMemory(pData, &type, 2);
|
|
|
523 COM.MoveMemory(pData + 8, &doubleData, 8);
|
|
|
524 break;
|
|
|
525 case COM.VT_DISPATCH :
|
|
|
526 dispatchData.AddRef();
|
|
|
527 COM.MoveMemory(pData, &type, 2);
|
|
|
528 auto v = cast(void*)dispatchData;
|
|
|
529 COM.MoveMemory(pData + 8, &v, 4);
|
|
|
530 break;
|
|
|
531 case COM.VT_UNKNOWN :
|
|
|
532 unknownData.AddRef();
|
|
|
533 COM.MoveMemory(pData, &type, 2);
|
|
|
534 auto v = cast(void*)dispatchData;
|
|
|
535 COM.MoveMemory(pData + 8, &v, 4);
|
|
|
536 break;
|
|
|
537 case COM.VT_BSTR :
|
|
|
538 COM.MoveMemory(pData, &type, 2);
|
|
|
539 wchar[] data = StrToWCHARs(stringData);
|
|
|
540 auto ptr = COM.SysAllocString(data.ptr);
|
|
|
541 COM.MoveMemory(pData + 8, &ptr, 4);
|
|
|
542 break;
|
|
|
543
|
|
|
544 default :
|
|
|
545 OLE.error(DWT.ERROR_NOT_IMPLEMENTED);
|
|
|
546 }
|
|
|
547 }
|
|
|
548 /**
|
|
|
549 * Returns the Java double represented by this Variant.
|
|
|
550 *
|
|
|
551 * <p>If this Variant does not contain a Java double, an attempt is made to
|
|
|
552 * coerce the Variant type into a Java double. If this fails, an error is thrown.
|
|
|
553 *
|
|
|
554 * @return the Java double represented by this Variant
|
|
|
555 *
|
|
|
556 * @exception DWTException <ul>
|
|
|
557 * <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant can not be coerced into a double</li>
|
|
|
558 * </ul>
|
|
|
559 *
|
|
|
560 * @since 3.2
|
|
|
561 */
|
|
|
562 public double getDouble() {
|
|
|
563 if (type is COM.VT_EMPTY) {
|
|
|
564 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, -1);
|
|
|
565 }
|
|
|
566 if (type is COM.VT_R8) {
|
|
|
567 return doubleData;
|
|
|
568 }
|
|
|
569
|
|
|
570 // try to coerce the value to the desired type
|
|
98
|
571 VARIANT oldPtr, newPtr;
|
|
97
|
572 try {
|
|
98
|
573 getData(&oldPtr);
|
|
|
574 int result = COM.VariantChangeType(&newPtr, &oldPtr, 0, COM.VT_R8);
|
|
97
|
575 if (result !is COM.S_OK)
|
|
|
576 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, result);
|
|
|
577 Variant doubleVar = new Variant();
|
|
98
|
578 doubleVar.setData(&newPtr);
|
|
97
|
579 return doubleVar.getDouble();
|
|
|
580 } finally {
|
|
98
|
581 COM.VariantClear(&oldPtr);
|
|
|
582 COM.VariantClear(&newPtr);
|
|
97
|
583 }
|
|
|
584 }
|
|
|
585
|
|
|
586 /**
|
|
|
587 * Returns the Java float represented by this Variant.
|
|
|
588 *
|
|
|
589 * <p>If this Variant does not contain a Java float, an attempt is made to
|
|
|
590 * coerce the Variant type into a Java float. If this fails, an error is thrown.
|
|
|
591 *
|
|
|
592 * @return the Java float represented by this Variant
|
|
|
593 *
|
|
|
594 * @exception DWTException <ul>
|
|
|
595 * <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant can not be coerced into a float</li>
|
|
|
596 * </ul>
|
|
|
597 */
|
|
|
598 public float getFloat() {
|
|
|
599 if (type is COM.VT_EMPTY) {
|
|
|
600 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, -1);
|
|
|
601 }
|
|
|
602 if (type is COM.VT_R4) {
|
|
|
603 return floatData;
|
|
|
604 }
|
|
|
605
|
|
|
606 // try to coerce the value to the desired type
|
|
98
|
607 VARIANT oldPtr, newPtr;
|
|
97
|
608 try {
|
|
98
|
609 getData(&oldPtr);
|
|
|
610 int result = COM.VariantChangeType(&newPtr, &oldPtr, 0, COM.VT_R4);
|
|
97
|
611 if (result !is COM.S_OK)
|
|
|
612 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, result);
|
|
|
613 Variant floatVar = new Variant();
|
|
98
|
614 floatVar.setData(&newPtr);
|
|
97
|
615 return floatVar.getFloat();
|
|
|
616 } finally {
|
|
98
|
617 COM.VariantClear(&oldPtr);
|
|
|
618 COM.VariantClear(&newPtr);
|
|
97
|
619 }
|
|
|
620
|
|
|
621 }
|
|
|
622 /**
|
|
|
623 * Returns the Java int represented by this Variant.
|
|
|
624 *
|
|
|
625 * <p>If this Variant does not contain a Java int, an attempt is made to
|
|
|
626 * coerce the Variant type into a Java int. If this fails, an error is thrown.
|
|
|
627 *
|
|
|
628 * @return the Java int represented by this Variant
|
|
|
629 *
|
|
|
630 * @exception DWTException <ul>
|
|
|
631 * <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant can not be coerced into a int</li>
|
|
|
632 * </ul>
|
|
|
633 */
|
|
|
634 public int getInt() {
|
|
|
635 if (type is COM.VT_EMPTY) {
|
|
|
636 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, -1);
|
|
|
637 }
|
|
|
638 if (type is COM.VT_I4) {
|
|
|
639 return intData;
|
|
|
640 }
|
|
|
641
|
|
|
642 // try to coerce the value to the desired type
|
|
98
|
643 VARIANT oldPtr, newPtr;
|
|
97
|
644 try {
|
|
98
|
645 getData(&oldPtr);
|
|
|
646 int result = COM.VariantChangeType(&newPtr, &oldPtr, 0, COM.VT_I4);
|
|
97
|
647 if (result !is COM.S_OK)
|
|
|
648 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, result);
|
|
|
649 Variant intVar = new Variant();
|
|
98
|
650 intVar.setData(&newPtr);
|
|
97
|
651 return intVar.getInt();
|
|
|
652 } finally {
|
|
98
|
653 COM.VariantClear(&oldPtr);
|
|
|
654 COM.VariantClear(&newPtr);
|
|
97
|
655 }
|
|
|
656 }
|
|
|
657 /**
|
|
|
658 * Returns the Java long represented by this Variant.
|
|
|
659 *
|
|
|
660 * <p>If this Variant does not contain a Java long, an attempt is made to
|
|
|
661 * coerce the Variant type into a Java long. If this fails, an error is thrown.
|
|
|
662 *
|
|
|
663 * @return the Java long represented by this Variant
|
|
|
664 *
|
|
|
665 * @exception DWTException <ul>
|
|
|
666 * <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant can not be coerced into a long</li>
|
|
|
667 * </ul>
|
|
|
668 *
|
|
|
669 * @since 3.2
|
|
|
670 */
|
|
|
671 public long getLong() {
|
|
|
672 if (type is COM.VT_EMPTY) {
|
|
|
673 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, -1);
|
|
|
674 }
|
|
|
675 if (type is COM.VT_I8) {
|
|
|
676 return longData;
|
|
|
677 }
|
|
|
678
|
|
|
679 // try to coerce the value to the desired type
|
|
98
|
680 VARIANT oldPtr, newPtr;
|
|
97
|
681 try {
|
|
98
|
682 getData(&oldPtr);
|
|
|
683 int result = COM.VariantChangeType(&newPtr, &oldPtr, 0, COM.VT_I8);
|
|
97
|
684 if (result !is COM.S_OK)
|
|
|
685 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, result);
|
|
|
686 Variant longVar = new Variant();
|
|
98
|
687 longVar.setData(&newPtr);
|
|
97
|
688 return longVar.getLong();
|
|
|
689 } finally {
|
|
98
|
690 COM.VariantClear(&oldPtr);
|
|
|
691 COM.VariantClear(&newPtr);
|
|
97
|
692 }
|
|
|
693 }
|
|
|
694 /**
|
|
|
695 * Returns the Java short represented by this Variant.
|
|
|
696 *
|
|
|
697 * <p>If this Variant does not contain a Java short, an attempt is made to
|
|
|
698 * coerce the Variant type into a Java short. If this fails, an error is thrown.
|
|
|
699 *
|
|
|
700 * @return the Java short represented by this Variant
|
|
|
701 *
|
|
|
702 * @exception DWTException <ul>
|
|
|
703 * <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant can not be coerced into a short</li>
|
|
|
704 * </ul>
|
|
|
705 */
|
|
|
706 public short getShort() {
|
|
|
707 if (type is COM.VT_EMPTY) {
|
|
|
708 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, -1);
|
|
|
709 }
|
|
|
710 if (type is COM.VT_I2) {
|
|
|
711 return shortData;
|
|
|
712 }
|
|
|
713
|
|
|
714 // try to coerce the value to the desired type
|
|
98
|
715 VARIANT oldPtr, newPtr;
|
|
97
|
716 try {
|
|
98
|
717 getData(&oldPtr);
|
|
|
718 int result = COM.VariantChangeType(&newPtr, &oldPtr, 0, COM.VT_I2);
|
|
97
|
719 if (result !is COM.S_OK)
|
|
|
720 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, result);
|
|
|
721 Variant shortVar = new Variant();
|
|
98
|
722 shortVar.setData(&newPtr);
|
|
97
|
723 return shortVar.getShort();
|
|
|
724 } finally {
|
|
98
|
725 COM.VariantClear(&oldPtr);
|
|
|
726 COM.VariantClear(&newPtr);
|
|
97
|
727 }
|
|
|
728
|
|
|
729 }
|
|
|
730 /**
|
|
|
731 * Returns the Java String represented by this Variant.
|
|
|
732 *
|
|
|
733 * <p>If this Variant does not contain a Java String, an attempt is made to
|
|
|
734 * coerce the Variant type into a Java String. If this fails, an error is thrown.
|
|
|
735 *
|
|
|
736 * @return the Java String represented by this Variant
|
|
|
737 *
|
|
|
738 * @exception DWTException <ul>
|
|
|
739 * <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant can not be coerced into a String</li>
|
|
|
740 * </ul>
|
|
|
741 */
|
|
|
742 public char[] getString() {
|
|
|
743 if (type is COM.VT_EMPTY) {
|
|
|
744 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, -1);
|
|
|
745 }
|
|
|
746 if (type is COM.VT_BSTR) {
|
|
|
747 return stringData;
|
|
|
748 }
|
|
|
749
|
|
|
750 // try to coerce the value to the desired type
|
|
98
|
751 VARIANT oldPtr, newPtr;
|
|
97
|
752 try {
|
|
98
|
753 getData(&oldPtr);
|
|
|
754 int result = COM.VariantChangeType(&newPtr, &oldPtr, 0, COM.VT_BSTR);
|
|
97
|
755 if (result !is COM.S_OK)
|
|
|
756 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, result);
|
|
|
757
|
|
|
758 Variant stringVar = new Variant();
|
|
98
|
759 stringVar.setData(&newPtr);
|
|
97
|
760 return stringVar.getString();
|
|
|
761
|
|
|
762 } finally {
|
|
98
|
763 COM.VariantClear(&oldPtr);
|
|
|
764 COM.VariantClear(&newPtr);
|
|
97
|
765 }
|
|
|
766 }
|
|
|
767 /**
|
|
|
768 * Returns the type of the variant type. This will be an OLE.VT_* value or
|
|
|
769 * a bitwise combination of OLE.VT_* values as in the case of
|
|
|
770 * OLE.VT_BSTR | OLE.VT_BYREF.
|
|
|
771 *
|
|
|
772 * @return the type of the variant data
|
|
|
773 *
|
|
|
774 * @since 2.0
|
|
|
775 */
|
|
|
776 public short getType() {
|
|
|
777 return type;
|
|
|
778 }
|
|
|
779 /**
|
|
|
780 * Returns the IUnknown object represented by this Variant.
|
|
|
781 *
|
|
|
782 * <p>If this Variant does not contain an IUnknown object, an attempt is made to
|
|
|
783 * coerce the Variant type into an IUnknown object. If this fails, an error is
|
|
|
784 * thrown.
|
|
|
785 *
|
|
|
786 * @return the IUnknown object represented by this Variant
|
|
|
787 *
|
|
|
788 * @exception DWTException <ul>
|
|
|
789 * <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant can not be coerced into
|
|
|
790 * an IUnknown object</li>
|
|
|
791 * </ul>
|
|
|
792 */
|
|
|
793 public IUnknown getUnknown() {
|
|
|
794 if (type is COM.VT_EMPTY) {
|
|
|
795 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, -1);
|
|
|
796 }
|
|
|
797 if (type is COM.VT_UNKNOWN) {
|
|
|
798 return unknownData;
|
|
|
799 }
|
|
|
800
|
|
|
801 // try to coerce the value to the desired type
|
|
98
|
802 VARIANT oldPtr, newPtr;
|
|
97
|
803 try {
|
|
98
|
804 getData(&oldPtr);
|
|
|
805 int result = COM.VariantChangeType(&newPtr, &oldPtr, 0, COM.VT_UNKNOWN);
|
|
97
|
806 if (result !is COM.S_OK)
|
|
|
807 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE, result);
|
|
|
808 Variant unknownVar = new Variant();
|
|
98
|
809 unknownVar.setData(&newPtr);
|
|
97
|
810 return unknownVar.getUnknown();
|
|
|
811 } finally {
|
|
98
|
812 COM.VariantClear(&oldPtr);
|
|
|
813 COM.VariantClear(&newPtr); // Note: This must absolutely be done AFTER the
|
|
97
|
814 // IUnknown object is created as Variant Clear
|
|
|
815 // will result in a Release being performed on the
|
|
|
816 // Dispatch object
|
|
|
817 }
|
|
|
818 }
|
|
|
819 /**
|
|
|
820 * Update the by reference value of this variant with a new bool value.
|
|
|
821 *
|
|
|
822 * @param val the new bool value
|
|
|
823 *
|
|
|
824 * @exception DWTException <ul>
|
|
|
825 * <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant is not
|
|
|
826 * a (VT_BYREF | VT_BOOL) object</li>
|
|
|
827 * </ul>
|
|
|
828 *
|
|
|
829 * @since 2.1
|
|
|
830 */
|
|
|
831 public void setByRef(bool val) {
|
|
|
832 if ((type & COM.VT_BYREF) is 0 || (type & COM.VT_BOOL) is 0) {
|
|
|
833 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE);
|
|
|
834 }
|
|
|
835 auto v = val ? COM.VARIANT_TRUE : COM.VARIANT_FALSE;
|
|
|
836 COM.MoveMemory(byRefPtr, &v, 2);
|
|
|
837 }
|
|
|
838 /**
|
|
|
839 * Update the by reference value of this variant with a new float value.
|
|
|
840 *
|
|
|
841 * @param val the new float value
|
|
|
842 *
|
|
|
843 * @exception DWTException <ul>
|
|
|
844 * <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant is not
|
|
|
845 * a (VT_BYREF | VT_R4) object</li>
|
|
|
846 * </ul>
|
|
|
847 *
|
|
|
848 * @since 2.1
|
|
|
849 */
|
|
|
850 public void setByRef(float val) {
|
|
|
851 if ((type & COM.VT_BYREF) is 0 || (type & COM.VT_R4) is 0) {
|
|
|
852 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE);
|
|
|
853 }
|
|
|
854 COM.MoveMemory(byRefPtr, &val, 4);
|
|
|
855 }
|
|
|
856 /**
|
|
|
857 * Update the by reference value of this variant with a new integer value.
|
|
|
858 *
|
|
|
859 * @param val the new integer value
|
|
|
860 *
|
|
|
861 * @exception DWTException <ul>
|
|
|
862 * <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant is not a (VT_BYREF | VT_I4) object</li>
|
|
|
863 * </ul>
|
|
|
864 *
|
|
|
865 * @since 2.1
|
|
|
866 */
|
|
|
867 public void setByRef(int val) {
|
|
|
868 if ((type & COM.VT_BYREF) is 0 || (type & COM.VT_I4) is 0) {
|
|
|
869 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE);
|
|
|
870 }
|
|
|
871 COM.MoveMemory(byRefPtr, &val, 4);
|
|
|
872 }
|
|
|
873 /**
|
|
|
874 * Update the by reference value of this variant with a new short value.
|
|
|
875 *
|
|
|
876 * @param val the new short value
|
|
|
877 *
|
|
|
878 * @exception DWTException <ul>
|
|
|
879 * <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant is not a (VT_BYREF | VT_I2) object
|
|
|
880 * </ul>
|
|
|
881 *
|
|
|
882 * @since 2.1
|
|
|
883 */
|
|
|
884 public void setByRef(short val) {
|
|
|
885 if ((type & COM.VT_BYREF) is 0 || (type & COM.VT_I2) is 0) {
|
|
|
886 OLE.error(OLE.ERROR_CANNOT_CHANGE_VARIANT_TYPE);
|
|
|
887 }
|
|
|
888 COM.MoveMemory(byRefPtr, &val, 2);
|
|
|
889 }
|
|
|
890
|
|
|
891 void setData(VARIANT* pData){
|
|
|
892 if (pData is null) OLE.error(OLE.ERROR_INVALID_ARGUMENT);
|
|
|
893
|
|
|
894 short[1] dataType ;
|
|
|
895 COM.MoveMemory(dataType.ptr, pData, 2);
|
|
|
896 type = dataType[0];
|
|
|
897
|
|
|
898 if ((type & COM.VT_BYREF) is COM.VT_BYREF) {
|
|
|
899 void*[1] newByRefPtr;
|
|
|
900 OS.MoveMemory(newByRefPtr.ptr, pData + 8, 4);
|
|
|
901 byRefPtr = newByRefPtr[0];
|
|
|
902 return;
|
|
|
903 }
|
|
|
904
|
|
|
905 switch (type) {
|
|
|
906 case COM.VT_EMPTY :
|
|
|
907 case COM.VT_NULL :
|
|
|
908 break;
|
|
|
909 case COM.VT_BOOL :
|
|
|
910 short[1] newBooleanData;
|
|
|
911 COM.MoveMemory(newBooleanData.ptr, pData + 8, 2);
|
|
|
912 booleanData = (newBooleanData[0] !is COM.VARIANT_FALSE);
|
|
|
913 break;
|
|
|
914 case COM.VT_I1 :
|
|
|
915 byte[1] newByteData;
|
|
|
916 COM.MoveMemory(newByteData.ptr, pData + 8, 1);
|
|
|
917 byteData = newByteData[0];
|
|
|
918 break;
|
|
|
919 case COM.VT_I2 :
|
|
|
920 short[1] newShortData;
|
|
|
921 COM.MoveMemory(newShortData.ptr, pData + 8, 2);
|
|
|
922 shortData = newShortData[0];
|
|
|
923 break;
|
|
|
924 case COM.VT_UI2 :
|
|
|
925 char[1] newCharData;
|
|
|
926 COM.MoveMemory(newCharData.ptr, pData + 8, 2);
|
|
|
927 charData = newCharData[0];
|
|
|
928 break;
|
|
|
929 case COM.VT_I4 :
|
|
|
930 int[1] newIntData;
|
|
|
931 OS.MoveMemory(newIntData.ptr, pData + 8, 4);
|
|
|
932 intData = newIntData[0];
|
|
|
933 break;
|
|
|
934 case COM.VT_I8 :
|
|
|
935 long[1] newLongData;
|
|
|
936 OS.MoveMemory(newLongData.ptr, pData + 8, 8);
|
|
|
937 longData = newLongData[0];
|
|
|
938 break;
|
|
|
939 case COM.VT_R4 :
|
|
|
940 float[1] newFloatData;
|
|
|
941 COM.MoveMemory(newFloatData.ptr, pData + 8, 4);
|
|
|
942 floatData = newFloatData[0];
|
|
|
943 break;
|
|
|
944 case COM.VT_R8 :
|
|
|
945 double[1] newDoubleData;
|
|
|
946 COM.MoveMemory(newDoubleData.ptr, pData + 8, 8);
|
|
|
947 doubleData = newDoubleData[0];
|
|
|
948 break;
|
|
|
949 case COM.VT_DISPATCH : {
|
|
|
950 IDispatch[1] ppvObject;
|
|
|
951 OS.MoveMemory(ppvObject.ptr, pData + 8, 4);
|
|
|
952 if (ppvObject[0] is null) {
|
|
|
953 type = COM.VT_EMPTY;
|
|
|
954 break;
|
|
|
955 }
|
|
|
956 dispatchData = ppvObject[0];
|
|
|
957 dispatchData.AddRef();
|
|
|
958 break;
|
|
|
959 }
|
|
|
960 case COM.VT_UNKNOWN : {
|
|
|
961 IUnknown[1] ppvObject;
|
|
|
962 OS.MoveMemory(ppvObject.ptr, pData + 8, 4);
|
|
|
963 if (ppvObject[0] is null) {
|
|
|
964 type = COM.VT_EMPTY;
|
|
|
965 break;
|
|
|
966 }
|
|
|
967 unknownData = ppvObject[0];
|
|
|
968 unknownData.AddRef();
|
|
|
969 break;
|
|
|
970 }
|
|
|
971 case COM.VT_BSTR :
|
|
|
972 // get the address of the memory in which the string resides
|
|
|
973 wchar*[1] hMem;
|
|
|
974 OS.MoveMemory(hMem.ptr, pData + 8, 4);
|
|
|
975 if (hMem[0] is null) {
|
|
|
976 type = COM.VT_EMPTY;
|
|
|
977 break;
|
|
|
978 }
|
|
|
979 // Get the size of the string from the OS - the size is expressed in number
|
|
|
980 // of bytes - each unicode character is 2 bytes.
|
|
|
981 int size = COM.SysStringByteLen(hMem[0]);
|
|
|
982 if (size > 0){
|
|
|
983 // get the unicode character array from the global memory and create a String
|
|
|
984 wchar[] buffer = new wchar[(size + 1) /2]; // add one to avoid rounding errors
|
|
|
985 COM.MoveMemory(buffer.ptr, hMem[0], size);
|
|
|
986 stringData = WCHARsToStr( buffer );
|
|
|
987 } else {
|
|
|
988 stringData = ""; //$NON-NLS-1$
|
|
|
989 }
|
|
|
990 break;
|
|
|
991
|
|
|
992 default :
|
|
|
993 // try coercing it into one of the known forms
|
|
|
994 auto newPData = cast(VARIANT*) OS.GlobalAlloc(OS.GMEM_FIXED | OS.GMEM_ZEROINIT, VARIANT.sizeof);
|
|
|
995 if (COM.VariantChangeType(newPData, pData, 0, COM.VT_R4) is COM.S_OK) {
|
|
|
996 setData(newPData);
|
|
|
997 } else if (COM.VariantChangeType(newPData, pData, 0, COM.VT_I4) is COM.S_OK) {
|
|
|
998 setData(newPData);
|
|
|
999 } else if (COM.VariantChangeType(newPData, pData, 0, COM.VT_BSTR) is COM.S_OK) {
|
|
|
1000 setData(newPData);
|
|
|
1001 }
|
|
|
1002 COM.VariantClear(newPData);
|
|
|
1003 OS.GlobalFree(newPData);
|
|
|
1004 break;
|
|
|
1005 }
|
|
|
1006 }
|
|
|
1007
|
|
|
1008 /**
|
|
|
1009 * Returns a string containing a concise, human-readable
|
|
|
1010 * description of the receiver.
|
|
|
1011 *
|
|
|
1012 * @return a string representation of the Variant
|
|
|
1013 */
|
|
|
1014 public char[] toString () {
|
|
|
1015 switch (type) {
|
|
|
1016 case COM.VT_BOOL :
|
|
|
1017 return "VT_BOOL{"~to!(char[])(booleanData)~"}";
|
|
|
1018 case COM.VT_I1 :
|
|
|
1019 return "VT_I1{"~to!(char[])(byteData)~"}";
|
|
|
1020 case COM.VT_I2 :
|
|
|
1021 return "VT_I2{"~to!(char[])(shortData)~"}";
|
|
|
1022 case COM.VT_UI2 :
|
|
|
1023 return "VT_UI2{"~charData~"}";
|
|
|
1024 case COM.VT_I4 :
|
|
|
1025 return "VT_I4{"~to!(char[])(intData)~"}";
|
|
|
1026 case COM.VT_I8 :
|
|
|
1027 return "VT_I8{"~to!(char[])(longData)~"}";
|
|
|
1028 case COM.VT_R4 :
|
|
|
1029 return "VT_R4{"~to!(char[])(floatData)~"}";
|
|
|
1030 case COM.VT_R8 :
|
|
|
1031 return "VT_R8{"~to!(char[])(doubleData)~"}";
|
|
|
1032 case COM.VT_BSTR :
|
|
|
1033 return "VT_BSTR{"~stringData~"}";
|
|
|
1034 case COM.VT_DISPATCH :
|
|
|
1035 return Format("VT_DISPATCH{{0x{:X}}", cast(void*) (dispatchData is null ? null : dispatchData));
|
|
|
1036 case COM.VT_UNKNOWN :
|
|
|
1037 return Format("VT_UNKNOWN{{0x{:X}}", cast(void*) (unknownData is null ? null : unknownData));
|
|
|
1038 case COM.VT_EMPTY :
|
|
|
1039 return "VT_EMPTY";
|
|
|
1040 case COM.VT_NULL :
|
|
|
1041 return "VT_NULL";
|
|
|
1042 }
|
|
|
1043 if ((type & COM.VT_BYREF) !is 0) {
|
|
|
1044 return Format("VT_BYREF|{}{{{}}",(type & ~COM.VT_BYREF), byRefPtr );
|
|
|
1045 }
|
|
|
1046 return "Unsupported Type "~to!(char[])(type);
|
|
|
1047 }
|
|
|
1048 }
|
