I found method for show SymbologyControl.
 ISymbologyControlPtr pSym;
 pSym.CreateInstance(CLSID_SymbologyControl);
 IID pSymIID =pSym.GetIID();
 QAxWidget* symControlWidget = new QAxWidget();
 symControlWidget->setControl("{2ACEE55E-C5F5-483C-8B10-D2B25B81F46F}"); //GUID
 symControlWidget->queryInterface(QUuid(pSymIID), (void**)&pSym);
  
 pSym->put_ShowContextMenu(VARIANT_TRUE);
 
 QString styleFileName="C:\\Projects\\VSQTGUI\\Data\\ESRI_Optimized.ServerStyle";
 BSTR bstr_sfn=CComBSTR((const char*)styleFileName.toAscii());
 
 pSym->LoadStyleFile(bstr_sfn);
 
 
 layout->addWidget(symControlWidget);
 this->setLayout(layout);
But this control empy.While styles file not shown?How to show styles files items?PS:developed by Engine10 + VS2010 + QT4