出处：https://help.autodesk.com/view/OARX/2018/ENU/?guid=OREFNET-Autodesk_AutoCAD_ApplicationServices_Document_SendStringToExecute_string__MarshalAsUnmanagedType_U1__bool__MarshalAsUnmanagedType_U1__bool__MarshalAsUnmanagedType_U1__bool方法的API：publicvoidS