does any one know know the link to following program

i am searching for a sample program in which there would be code to open the com port send data to com port then show the send data on the screen of my computer and that can be able to run in visual studio 2010 and not using MFC,i want the com port communication on my PC,i mean i don't have any other PC to send data.If someone have some link please do pass me....
Use CreateFile() to open specified COM port, WriteFile() to write, etc It is just basic stuff which every windows programmer already knows.
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