I would like to know if someone use the IB AX with the C++/CLI language, I don't know what to declare in C++/CLI, in order to get the same think as C#.(in C# it generates the event method automaticcaly with multi tab button) C++/CLI code: void cIB::Init_AxTWS(AxTWSLib::AxTws^ temp) { axTws1 = temp; axTws1->errMsg += gcnew ::_DTwsEvents_errMsgEventHandler(); } C# code: public bool Init_AxTWS(AxTWSLib.AxTws temp) { // Set the ActiveX axTws1 = temp; axTws1.errMsg += new _DTwsEvents_errMsgEventHandler(axTws1_errMsg); } void axTws1_errMsg(object sender, _DTwsEvents_errMsgEvent e) { }