Using serial COM ports for test.

How do I open a serial port for communication using C++. What I am trying to do is talk to a modem through COM 1 of the PC.
mvuAsked:
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kellyjjCommented:
Are we talking about dos/windows?   I believe you can use the ioctrl and open commands for getting the port.
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glittleCommented:
Use CreateFile to open the COM1 device and then ReadFile/WriteFile/etc.


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glittleCommented:
Oh yeah, one other ---

Once open, you then use SetCommXxx and GetCommXxx to control modem, handshaking, and or timeouts.  All of this is very well covered in the SDK online documentation.

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mvuAuthor Commented:
Thank you, i will look into.
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