Hi

Thread is the smallest set of instructions that can be executed..

Cmutex and Csemaphore are the ways used for synchronization purpose.

the difference between the above two is..Cmutex is a single lock where as csemaphore is a multilock..

Hai

Thread: is a path Execution of a program....So that the thread having its own stack and all other resources..

In VC++ we have 4 synchronization Objects.

1)CCriticalSection: This is not aKernal object. using this object you can synchronize one or more threads with in the same process.

2)CMutex

3)CEvent

4)CSemaphore these three are kernal objects

using mutex you can sync two r more threads in the same process or diff process...

i hope u get little bit idea abt these objects

thanks & regards

Sivaprasad