Re: New Essay: Serial Ports

"Scott McPhillips [MVP]" <org-dot-mvps-at-scottmcp>
Tue, 25 Jul 2006 17:24:19 -0400
tio wrote:

I've written an essay on serial port programming; it is now available on my MVP Tips site.

No code download, and this was created on-the-fly as I was writing the essay, usual
disclaimers apply.

Nice essay as usual!

Just one question.
When creating a new SerialParameters i guess that the first HANDLE is the
COM port, the second CWnd is the window that will be notified, but what is
the third param?

// Anders

I join to this question. And how call paramters from "SerialParameters"
from other class to use handle to open port?
For example what am I write in 'new SerialParameters(...)' for work
good ??

In Joe's code, the third parameter to SerialParameters is an event
handle that is used to command the threads to exit during program close.

m_hShutdown = CreateEvent(NULL, FALSE, FALSE, NULL);
writer->parms = new SerialParameters(hCom, AfxGetMainWnd(), m_hShutdown);

When the program is closing, command thread shutdown with
SetEvent(m_hShutdown). This causes WaitForMultipleObjects to return
WAIT_OBJECT_0 and the threads will exit.

Scott McPhillips [VC++ MVP]

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