I want created a file DLL by ATL ?

[Thangnc]

I created project Client/Server by ATL export file Adsoft.DLL. But Build to appear any error. MySocket.obj : error LNK2001: unresolved external symbol __imp__socket@12 Debug/AdSoftClientDLL.dll : fatal error LNK1120: 1 unresolved externals //Adsoft.idl [id(1), helpstring("method Get")] HRESULT SetPort(); //Adsoft.cpp STDMETHODIMP CMySocket::SetPort() { // TODO: Add your implementation code here SOCKET m_str; m_str=socket(AF_INET,SOCK_STREAM,0);// error when to call function a here if(!m_str)Messabox(NULL,"ERROR !!!","?????",MB_OK) return S_OK; } if can you send back to give me a example Thanks All !

[Steve S]

Have you called the initialisation function for the sockets library? Steve S Developer for hire!

[Thangnc]

I write all idem.I unused direction for use function this You can help me? I am in urgent need of project Thanks Steve S!

[Steve S]

Now I've read the question properly... You aren't linking with the WinSock library. You need to add either wsock32.lib or ws2_32.lib to the options for the linker, depending on whether you're using Winsock 1.x or 2.x You do this from the project property pages, specifically the Input property page in the Linker folder. Steve S Developer for hire!

[Thangnc]

To succeed beyond one's expectations . Thank you very much !