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<li class="navelem"><a class="el" href="dir_c70994b0d9919a11b368e677cb7f323c.html">IGraphics</a></li><li class="navelem"><a class="el" href="dir_e4d4be9d96bdd22d6611b01668e2ff02.html">Platforms</a></li> </ul>
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<div class="contents">
<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> ==============================================================================</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"></span> </div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> This file is part of the iPlug 2 library. Copyright (C) the iPlug 2 developers.</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"></span> </div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> See LICENSE.txt for more info.</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"></span> </div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> ==============================================================================</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment">*/</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#pragma once</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span> </div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#include "<a class="code" href="_i_plug_logger_8h.html">IPlugLogger.h</a>"</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span> </div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span>BEGIN_IPLUG_NAMESPACE</div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span>BEGIN_IGRAPHICS_NAMESPACE</div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span> </div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="keyword">namespace </span>DragAndDropHelpers </div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span>{ </div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"><a class="line" href="class_drag_and_drop_helpers_1_1_drop_source.html"> 20</a></span><span class="keyword">class </span><a class="code hl_class" href="class_drag_and_drop_helpers_1_1_drop_source.html">DropSource</a> : <span class="keyword">public</span> IDropSource </div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span>{</div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> <a class="code hl_class" href="class_drag_and_drop_helpers_1_1_drop_source.html">DropSource</a>() {}</div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> <a class="code hl_class" href="class_drag_and_drop_helpers_1_1_drop_source.html">~DropSource</a>() </div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> {</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> assert(mRefCount == 0);</div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> }</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> </div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> HRESULT STDMETHODCALLTYPE QueryInterface(REFIID refiid, <span class="keywordtype">void</span>** resultHandle)<span class="keyword"> override </span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> <span class="keywordflow">if</span> (refiid == IID_IDropSource)</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> {</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> *resultHandle = <span class="keyword">this</span>;</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> AddRef();</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> <span class="keywordflow">return</span> S_OK;</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> }</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> *resultHandle = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> <span class="keywordflow">return</span> E_NOINTERFACE;</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> }</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> </div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> ULONG STDMETHODCALLTYPE AddRef ()<span class="keyword"> override </span>{ <span class="keywordflow">return</span> ++mRefCount; }</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> ULONG STDMETHODCALLTYPE Release()<span class="keyword"> override </span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> <span class="keywordtype">int</span> refCount = --mRefCount;</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> assert(refCount >= 0);</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="keywordflow">if</span> (refCount <= 0) </div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> {</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="keyword">delete</span> <span class="keyword">this</span>;</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> }</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <span class="keywordflow">return</span> refCount;</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> }</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> </div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> <span class="comment">// IDropSource methods</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> HRESULT STDMETHODCALLTYPE QueryContinueDrag(BOOL escapeKeyPressed, DWORD grfKeyState)<span class="keyword"> override </span></div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> <span class="keywordflow">if</span> (escapeKeyPressed == TRUE) </div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> {</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> DBGMSG(<span class="stringliteral">"DropSource: escapeKeyPressed, abort dnd\n"</span>);</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="keywordflow">return</span> DRAGDROP_S_CANCEL;</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> }</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> </div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="keywordflow">if</span> ((grfKeyState & MK_LBUTTON) == 0) </div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> {</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <span class="keywordflow">return</span> DRAGDROP_S_DROP;</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> }</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="keywordflow">return</span> S_OK;</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> }</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> </div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> HRESULT STDMETHODCALLTYPE GiveFeedback(DWORD <span class="comment">/*dwEffect*/</span>)<span class="keyword"> override </span></div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <span class="keywordflow">return</span> DRAGDROP_S_USEDEFAULTCURSORS;</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> }</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="keywordtype">int</span> mRefCount = 1;</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span>};</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> </div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span><span class="keyword">static</span> <span class="keywordtype">void</span> deepFormatCopy(FORMATETC& dest, <span class="keyword">const</span> FORMATETC& source) </div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span>{</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> dest = source;</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> <span class="keywordflow">if</span> (source.ptd != <span class="keyword">nullptr</span>) </div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> {</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> dest.ptd = (DVTARGETDEVICE*) CoTaskMemAlloc (<span class="keyword">sizeof</span> (DVTARGETDEVICE));</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="keywordflow">if</span> (dest.ptd != <span class="keyword">nullptr</span>) </div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> {</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> *(dest.ptd) = *(source.ptd);</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> }</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> }</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span>}</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> </div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span><span class="comment">// Enum class, seems necessary for some reason</span></div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"><a class="line" href="struct_drag_and_drop_helpers_1_1_enum_f_o_r_m_a_t_e_t_c.html"> 91</a></span><span class="keyword">struct </span><a class="code hl_struct" href="struct_drag_and_drop_helpers_1_1_enum_f_o_r_m_a_t_e_t_c.html">EnumFORMATETC</a> final : <span class="keyword">public</span> IEnumFORMATETC</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span>{</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <a class="code hl_struct" href="struct_drag_and_drop_helpers_1_1_enum_f_o_r_m_a_t_e_t_c.html">EnumFORMATETC</a> (<span class="keyword">const</span> FORMATETC* f) : mFormatPtr (f) {}</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> <a class="code hl_struct" href="struct_drag_and_drop_helpers_1_1_enum_f_o_r_m_a_t_e_t_c.html">~EnumFORMATETC</a>() {}</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> </div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> ULONG STDMETHODCALLTYPE AddRef(<span class="keywordtype">void</span>) { <span class="keywordflow">return</span> ++mRefCount; }</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> ULONG STDMETHODCALLTYPE Release(<span class="keywordtype">void</span>) </div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> {</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="keywordtype">int</span> refCount = --mRefCount;</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> assert(refCount >= 0);</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="keywordflow">if</span>(refCount <= 0) {</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="keyword">delete</span> <span class="keyword">this</span>;</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> }</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> <span class="keywordflow">return</span> refCount;</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> }</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> </div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> HRESULT STDMETHODCALLTYPE QueryInterface(REFIID refiid, <span class="keywordtype">void</span> **resultHandle) </div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> {</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <span class="keywordflow">if</span> (refiid == IID_IEnumFORMATETC) </div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> {</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> AddRef();</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> *resultHandle = <span class="keyword">this</span>;</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> <span class="keywordflow">return</span> S_OK;</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> }</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> *resultHandle = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> <span class="keywordflow">return</span> E_NOINTERFACE;</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> }</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> </div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> HRESULT STDMETHODCALLTYPE Clone (IEnumFORMATETC** resultHandle)<span class="keyword"> override</span></div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> <span class="keywordflow">if</span> (resultHandle == <span class="keyword">nullptr</span>) </div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> {</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> <span class="keywordflow">return</span> E_POINTER;</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> }</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> <a class="code hl_struct" href="struct_drag_and_drop_helpers_1_1_enum_f_o_r_m_a_t_e_t_c.html">EnumFORMATETC</a>* copyObj = <span class="keyword">new</span> <a class="code hl_struct" href="struct_drag_and_drop_helpers_1_1_enum_f_o_r_m_a_t_e_t_c.html">EnumFORMATETC</a>(mFormatPtr);</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> copyObj->mCounter = mCounter;</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> *resultHandle = copyObj;</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> <span class="keywordflow">return</span> S_OK;</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> }</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> </div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> HRESULT STDMETHODCALLTYPE Next (ULONG celt, FORMATETC *pFormat, ULONG* pceltFetched)<span class="keyword"> override</span></div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> <span class="keywordflow">if</span> (pceltFetched != <span class="keyword">nullptr</span>) </div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> {</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> *pceltFetched = 0;</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> } </div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> <span class="keywordflow">else</span> <span class="keywordflow">if</span> (celt != 1)</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> {</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> <span class="keywordflow">return</span> S_FALSE;</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> }</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> </div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> <span class="keywordflow">if</span> (mCounter == 0 && celt > 0 && pFormat != <span class="keyword">nullptr</span>) </div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> {</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> deepFormatCopy(pFormat[0], *mFormatPtr);</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> mCounter++;</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> <span class="keywordflow">if</span> (pceltFetched != <span class="keyword">nullptr</span>) </div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> {</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> *pceltFetched = 1;</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> }</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> <span class="keywordflow">return</span> S_OK;</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> }</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> <span class="keywordflow">return</span> S_FALSE;</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> }</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> </div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> HRESULT STDMETHODCALLTYPE Skip (ULONG celt)<span class="keyword"> override</span></div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> <span class="keywordflow">if</span> (mCounter + (<span class="keywordtype">int</span>) celt >= 1) </div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> {</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> <span class="keywordflow">return</span> S_FALSE;</div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> }</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> mCounter += (int) celt;</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> <span class="keywordflow">return</span> S_OK;</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> }</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> </div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> HRESULT STDMETHODCALLTYPE Reset()<span class="keyword"> override</span></div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> mCounter = 0;</div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> <span class="keywordflow">return</span> S_OK;</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> }</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> </div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> <span class="keywordtype">int</span> mRefCount = 1;</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> <span class="keyword">const</span> FORMATETC* <span class="keyword">const</span> mFormatPtr;</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> <span class="keywordtype">int</span> mCounter = 0;</div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span>};</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> </div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span><span class="comment">// Object that carries the DnD payload. TODO: also support text/string?</span></div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"><a class="line" href="class_drag_and_drop_helpers_1_1_data_object.html"> 178</a></span><span class="keyword">class </span><a class="code hl_class" href="class_drag_and_drop_helpers_1_1_data_object.html">DataObject</a> : <span class="keyword">public</span> IDataObject </div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span>{</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> <a class="code hl_class" href="class_drag_and_drop_helpers_1_1_data_object.html">DataObject</a>(<span class="keyword">const</span> FORMATETC* f, <span class="keyword">const</span> <span class="keywordtype">char</span> *filePath) : mFormatPtr (f) </div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> {</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> mFilePath = filePath;</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> }</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> </div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> <span class="keyword">virtual</span> <a class="code hl_class" href="class_drag_and_drop_helpers_1_1_data_object.html">~DataObject</a>() </div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> {</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> assert(mRefCount == 0);</div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> }</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> </div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> HRESULT STDMETHODCALLTYPE QueryInterface(REFIID refiid, <span class="keywordtype">void</span> **resultHandle) </div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> {</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> <span class="keywordflow">if</span> (refiid == IID_IDataObject || refiid == IID_IUnknown) </div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> { <span class="comment">// note: it seems that IUnknown must be supported here, don't know why</span></div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> AddRef();</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> *resultHandle=<span class="keyword">this</span>;</div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> <span class="keywordflow">return</span> S_OK;</div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> }</div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> *resultHandle = NULL;</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> <span class="keywordflow">return</span> E_NOINTERFACE;</div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> }</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> </div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span> ULONG STDMETHODCALLTYPE AddRef() { <span class="keywordflow">return</span> ++mRefCount; }</div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span> ULONG STDMETHODCALLTYPE Release() </div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span> {</div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> <span class="keywordtype">int</span> refCount = --mRefCount;</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span> assert(mRefCount>=0);</div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span> <span class="keywordflow">if</span> (mRefCount<=0) </div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> {</div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> <span class="keyword">delete</span> <span class="keyword">this</span>;</div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> }</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span> <span class="keywordflow">return</span> refCount;</div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> }</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span> </div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span> <span class="keywordtype">bool</span> acceptFormat(FORMATETC *f) </div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span> {</div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span> <span class="keywordflow">return</span> (f->dwAspect & DVASPECT_CONTENT) && (f->tymed & TYMED_HGLOBAL) && (f->cfFormat == CF_HDROP);</div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span> }</div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span> </div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span> HRESULT STDMETHODCALLTYPE GetData(FORMATETC *pFormat, STGMEDIUM *pMedium) </div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span> {</div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> <span class="keywordflow">if</span> (pFormat == <span class="keyword">nullptr</span>) </div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span> {</div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> <span class="keywordflow">return</span> E_INVALIDARG;</div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span> }</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span> </div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span> <span class="keywordflow">if</span> (acceptFormat(pFormat) == <span class="keyword">false</span>) </div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span> {</div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span> <span class="keywordflow">return</span> DV_E_FORMATETC;</div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span> }</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span> </div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span> UTF8AsUTF16 pathWide(mFilePath.c_str());</div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> <span class="comment">// GHND ensures that the memory is zeroed</span></div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span> HDROP hGlobal = (HDROP)GlobalAlloc(GHND, <span class="keyword">sizeof</span>(DROPFILES) + (<span class="keyword">sizeof</span>(wchar_t) * (pathWide.GetLength() + 2)));</div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span> </div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span> <span class="keywordflow">if</span> (!hGlobal) </div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span> {</div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno"> 238</span> DBGMSG(<span class="stringliteral">"DataObject::GetData ERROR: GlobalAlloc returned null, aborting.\n"</span>);</div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno"> 240</span> }</div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span> </div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno"> 242</span> DROPFILES* pDropFiles = (DROPFILES*) GlobalLock(hGlobal);</div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span> <span class="keywordflow">if</span> (!pDropFiles) </div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span> {</div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno"> 245</span> DBGMSG(<span class="stringliteral">"DataObject::GetData ERROR: GlobalLock returned null, aborting.\n"</span>);</div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno"> 246</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno"> 247</span> }</div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"> 248</span> <span class="comment">// Populate the dropfile structure and copy the file path</span></div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span> pDropFiles->pFiles = <span class="keyword">sizeof</span>(DROPFILES);</div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"> 250</span> pDropFiles->fWide = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span> std::copy_n(pathWide.Get(), pathWide.GetLength(), <span class="keyword">reinterpret_cast<</span><span class="keywordtype">wchar_t</span>*<span class="keyword">></span>(&pDropFiles[1]));</div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span> </div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span> <span class="comment">// not sure if this is necessary to set the medium but why not</span></div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span> pMedium->tymed = TYMED_HGLOBAL;</div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno"> 255</span> pMedium->hGlobal = hGlobal;</div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span> pMedium->pUnkForRelease = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno"> 257</span> </div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno"> 258</span> GlobalUnlock(hGlobal);</div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span> </div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span> <span class="keywordflow">return</span> S_OK;</div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span> }</div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span> </div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span> HRESULT STDMETHODCALLTYPE QueryGetData( FORMATETC *pFormat ) </div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span> {</div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span> <span class="keywordflow">if</span> (pFormat == <span class="keyword">nullptr</span>) </div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span> {</div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span> <span class="keywordflow">return</span> E_INVALIDARG;</div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span> }</div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span> </div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span> <span class="keywordflow">if</span> (acceptFormat(pFormat) == <span class="keyword">false</span>) </div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span> {</div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span> <span class="keywordflow">return</span> DV_E_FORMATETC;</div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span> }</div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span> </div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span> <span class="keywordflow">return</span> S_OK;</div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span> }</div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno"> 277</span> </div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span> HRESULT STDMETHODCALLTYPE GetCanonicalFormatEtc(FORMATETC*, FORMATETC* pFormatOut)<span class="keyword"> override</span></div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span> pFormatOut->ptd = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno"> 281</span> <span class="keywordflow">return</span> E_NOTIMPL;</div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno"> 282</span> }</div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno"> 283</span> </div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno"> 284</span> HRESULT STDMETHODCALLTYPE EnumFormatEtc(DWORD direction, IEnumFORMATETC** resultHandle)<span class="keyword"> override </span></div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno"> 285</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno"> 286</span> <span class="keywordflow">if</span> (!resultHandle) </div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno"> 287</span> {</div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno"> 288</span> <span class="keywordflow">return</span> E_POINTER;</div>
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno"> 289</span> }</div>
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno"> 290</span> <span class="keywordflow">if</span> (direction == DATADIR_GET) </div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno"> 291</span> {</div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno"> 292</span> *resultHandle = <span class="keyword">new</span> <a class="code hl_struct" href="struct_drag_and_drop_helpers_1_1_enum_f_o_r_m_a_t_e_t_c.html">EnumFORMATETC</a>(mFormatPtr);</div>
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno"> 293</span> <span class="keywordflow">return</span> S_OK;</div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno"> 294</span> }</div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno"> 295</span> *resultHandle = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno"> 296</span> <span class="keywordflow">return</span> E_NOTIMPL;</div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno"> 297</span> }</div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno"> 298</span> </div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno"> 299</span> <span class="comment">// unimplemented (unnecessary?) functions</span></div>
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno"> 300</span> HRESULT STDMETHODCALLTYPE GetDataHere(FORMATETC*, STGMEDIUM*) { <span class="keywordflow">return</span> E_NOTIMPL; }</div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno"> 301</span> HRESULT STDMETHODCALLTYPE SetData(FORMATETC*, STGMEDIUM*, BOOL) { <span class="keywordflow">return</span> E_NOTIMPL; }</div>
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno"> 302</span> HRESULT STDMETHODCALLTYPE DAdvise(FORMATETC*, DWORD, IAdviseSink*, DWORD*) { <span class="keywordflow">return</span> E_NOTIMPL; }</div>
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno"> 303</span> HRESULT STDMETHODCALLTYPE DUnadvise(DWORD) { <span class="keywordflow">return</span> E_NOTIMPL; }</div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno"> 304</span> HRESULT STDMETHODCALLTYPE EnumDAdvise(IEnumSTATDATA**) { <span class="keywordflow">return</span> E_NOTIMPL; }</div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno"> 305</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno"> 306</span> <span class="keywordtype">int</span> mRefCount = 1;</div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno"> 307</span> std::string mFilePath;</div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno"> 308</span> <span class="keyword">const</span> FORMATETC* <span class="keyword">const</span> mFormatPtr;</div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno"> 309</span>};</div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno"> 310</span>} <span class="comment">// end of DragAndDropHelpers namespace</span></div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno"> 311</span> </div>
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno"> 312</span>END_IGRAPHICS_NAMESPACE</div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno"> 313</span>END_IPLUG_NAMESPACE</div>
<div class="ttc" id="a_i_plug_logger_8h_html"><div class="ttname"><a href="_i_plug_logger_8h.html">IPlugLogger.h</a></div><div class="ttdoc">IPlug logging a.k.a tracing functionality.</div></div>
<div class="ttc" id="aclass_drag_and_drop_helpers_1_1_data_object_html"><div class="ttname"><a href="class_drag_and_drop_helpers_1_1_data_object.html">DragAndDropHelpers::DataObject</a></div><div class="ttdef"><b>Definition:</b> <a href="_i_graphics_win__dnd_8h_source.html#l00178">IGraphicsWin_dnd.h:179</a></div></div>
<div class="ttc" id="aclass_drag_and_drop_helpers_1_1_drop_source_html"><div class="ttname"><a href="class_drag_and_drop_helpers_1_1_drop_source.html">DragAndDropHelpers::DropSource</a></div><div class="ttdef"><b>Definition:</b> <a href="_i_graphics_win__dnd_8h_source.html#l00020">IGraphicsWin_dnd.h:21</a></div></div>
<div class="ttc" id="astruct_drag_and_drop_helpers_1_1_enum_f_o_r_m_a_t_e_t_c_html"><div class="ttname"><a href="struct_drag_and_drop_helpers_1_1_enum_f_o_r_m_a_t_e_t_c.html">DragAndDropHelpers::EnumFORMATETC</a></div><div class="ttdef"><b>Definition:</b> <a href="_i_graphics_win__dnd_8h_source.html#l00091">IGraphicsWin_dnd.h:92</a></div></div>
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