18.6.13日报，提示CoInitialize未调用的解决方法

1，完善electron的拖拽。里面细节较多，和wke模式不同的是需要处理多线程逻辑。

另外::DoDragDrop一直提示CoInitialize未调用。实际上我调用了。

用ida看了下DoDragDrop的实现

主要是IsOleInitialized这个出错了。

BOOL __stdcall IsOleInitialized() {   tagSOleTlsData *v0; // eax@1   v0 = (tagSOleTlsData *)NtCurrentTeb()->ReservedForOle;   return v0 && v0->cOleInits;

}

原来是cOleInits没初始化。但CoInitialize和CoInitializeEx里并没初始化这个变量。

最后找到是OleInitializeEx初始化的。

HRESULT __stdcall OleInitializeEx(void *pMalloc, unsigned int ulFlags) {   void *v2; // esi@2   unsigned int v4; // [sp+4h] [bp-4h]@2   HRESULT hr; // [sp+14h] [bp+Ch]@1   hr = CoInitializeEx(pMalloc, ulFlags);   if ( hr >= 0 )   {     v2 = NtCurrentTeb()->ReservedForOle;     ++*((_DWORD *)v2 + 7);     v4 = *((_DWORD *)v2 + 7);     if ( v4 <= 1 )     {       COleStaticMutexSem::Request(&g_mxsSingleThreadOle, "Unknown File", 0, "Unknown Lock");       ++g_cOleProcessInits;       if ( g_cOleProcessInits != 1 || (hr = CheckInitDde(0), hr < 0) )       {         COleStaticMutexSem::Release(&g_mxsSingleThreadOle);       }       else       {         if ( !g_aDropTarget )         {           g_cfObjectLink = RegisterClipboardFormatW(L"ObjectLink");           g_cfOwnerLink = g_cfObjectLink + 1;           g_cfNative = g_cfObjectLink + 2;           g_cfBinary = g_cfObjectLink + 3;           g_cfFileName = g_cfObjectLink + 4;           g_cfFileNameW = g_cfObjectLink + 5;           g_cfNetworkName = g_cfObjectLink + 6;           g_cfDataObject = g_cfObjectLink + 7;           g_cfEmbeddedObject = g_cfObjectLink + 8;           g_cfEmbedSource = g_cfObjectLink + 9;           g_cfCustomLinkSource = g_cfObjectLink + 10;           g_cfLinkSource = g_cfObjectLink + 11;           g_cfObjectDescriptor = g_cfObjectLink + 12;           g_cfLinkSrcDescriptor = g_cfObjectLink + 13;           g_cfOleDraw = g_cfObjectLink + 14;           g_cfPBrush = g_cfObjectLink + 15;           g_cfMSDraw = g_cfObjectLink + 16;           g_cfOlePrivateData = g_cfObjectLink + 17;           g_cfScreenPicture = g_cfObjectLink + 18;           g_cfOleClipboardPersistOnFlush = g_cfObjectLink + 19;           g_cfMoreOlePrivateData = g_cfObjectLink + 20;           g_aDropTarget = GlobalAddAtomW(L"OleDropTargetInterface");           g_aDropTargetMarshalHwnd = GlobalAddAtomW(L"OleDropTargetMarshalHwnd");         }         uOmPostWmCommand = RegisterWindowMessageW(L"OM_POST_WM_COMMAND");         uOleMessage = RegisterWindowMessageW(L"OLE_MESSAHE");         COleStaticMutexSem::Release(&g_mxsSingleThreadOle);       }     }     if ( hr < 0 )     {       CheckUninitDde(0);       --*((_DWORD *)v2 + 7);       CoUninitialize();     }     else     {       if ( !pMalloc )         hr = v4 != 1;       CoVrfNotifyOleInit();     }   }   return hr; }