ReadFile()?

Hi!

I'm programming an aplication to connect with a machine by Serial Port. I would like to show the answer that this machine give me (I read it with ReadFile() ).

For example, If I read:

HANDLE Comm;

CString COM = "COM1";

BOOL Read;

DWORD iBytesRead;
char sBuffer[128];
char msg[255];

Read = ReadFile(Comm, &sBuffer, 1, &iBytesRead, NULL);

sprintf(msg , "Response:%s", sBuffer);
m_ctlRecvd.AddString(msg);
UpdateData(FALSE);

Thanks!!!!

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ReadFile()?

jason_czb
Call it until you've received 2 bytes total from ReadFile().
SpringTime
You forgot to ask a question in your post. Some notes: obtain the handle Comm by calling CreateFile(). You'll need to call ReadFile() more than once until you "have enough" data received. The very first time you'll call it, you may well get no data at all.
Mickey Gousset
thanks for all!
Christoph_S

Thanks!

And the last question: how can I show in my monitor the message I read with ReadFile()
Darmadi Komo
In a console mode program, just call printf():
sBuffer[iBytesRead] = 0;
printf("Response:%s\n", sBuffer);

In a Windows program, put it in a editbox with SendMessage(WM_SETTEXT)
mil10

Sorry! I forgot to explain all. I don't know how can I show in my monitor the message that the machine answer me.

I know that I have to make createFile and configure cbd. But I didn't want to bored you with a big code ;)

So, if the machine response "OK", how many times Should I call ReadFile How Can I know it

Thanks!
ReadFile()?

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ReadFile()?

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ReadFile()?

ReadFile()?

jason_czb

SpringTime

Mickey Gousset

Christoph_S

Darmadi Komo

mil10