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How to get status of serial lines (CTS, DSR) with Windows 3.1 Communications API

Posted on 1998-03-16
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Last Modified: 2013-12-03
Hi all genius. I have programmed a program in Windows 95 that uses serial ports. Under that platform, I used GetModemCommStatus to get the status of Clear To Send and Data Set Ready lines of RS-232. That function doesn't exist in 16 bits Windows. How can I do the same in Windows 3.1? I've used GetCommError but this doesn't work :(

Thanks in advance,
Jaime
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Question by:DaThiN
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Expert Comment

by:JamieR
ID: 1412084
Jaime,

Use EscapeComm under Win16.
Use EscapeCommFunction under Win32.

Jamie!
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Author Comment

by:DaThiN
ID: 1412085
That functions let me set or clear, for example, DTR and RTS signals. That isn't what I wanted to do. I want to know in what state (high or low, 1 or 0) is the signals CTS and DSR. Under win32 I used GetCommModemStatus. But it isn't supported by Win16.

Thanks
Jaime
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Accepted Solution

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JamieR earned 30 total points
ID: 1412086
Mmmm, should have read the question. I can only suggest that you use the GetCommEventMask facility to get notification when the flags change.

Jamie
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