Multiple COM Port Program in C++

[naraayanan]

Hi friends,

I am new for C++. Please answer my questions

1. How to write a Multiple COM Port at same time? Is it Possible?How? Please give a Code

In My Program,I declared a Object like this

struct _DCB dcb;
	HANDLE hCom;

[LIST=2]
[*] What is mean by INVALID_HANDLE_VALUE?[/LIST]
[LIST=3]
[*]what is mean by SetupComm(hCom,16000,16000)?[/LIST]
[LIST=4][*]what is mean by GetCommState(hCom,&dcb)?[/LIST]
[LIST=5][*]what is mean by GetCommTimeouts(hCom,&commtime)?[/LIST]
[LIST=6][*]what is mean by SetCommTimeouts(hCom,&commtime)?[/LIST]
Please answer my Question.Thanks in Advance