Introduction - If you have any usage issues, please Google them yourself
Visual C++ use thread synchronization in a critical region of code examples, you can try to hook before testing the use of a critical section to find "function button, and then click to start a thread in order to write to the edit box the characters A, start a thread for writing characters to the edit box B, see the thread running change, in this case the critical area for research thread synchronization problem, you can play a very good understanding of the role.