You have to prepare an enough space of buffer, so that GetUserName() could store data into the buffer. Rewrite like this: ...... int temp; TCHAR ipbuffer[30]; DWORD sizeBuff=30; temp=GetUserName(ipbuffer,&sizeBuff); ...... And in your original code, the ipbuffer was pointed into a constant string. B...

Does anyone hear about Distributed Share Memory ? Or anyone interests in it ? It seems a technology applied in a distribution computing environment, and very popular in a few years ago, but not now. Unfortunately, I choose this topic as my class project. So I'm just wondering anyone can give me more...