C / C++ / MFC

D.D. de Kerf17-Jun-01 21:32

17-Jun-01 21:32

There are a couple of ways to take care of this problem. I'll tell you about the way I solved it in my project a couple of weeks ago...

The GetInput function gives you the content of the input buffer and it resets the input buffer to empty (that is, if you do it correctly in respect to VARIANT types... I told you this a few weeks ago). Now you can choose to work on event-basis or on time-basis. If you work on even-basis, you have to catch the 'input buffer threshold reached' event. You can program the 'GetInput' function right inside the event handler and store the received character(s) in a string member variable. If you choose to work on a time-basis you will have to start polling the size of the string already in the inputbuffer. Don't forget to program a time-out procedure in the latter case, because if you don't and the communication gets messed up, your program will hang!

Now, in either case, you have to think of some wat to package your communication. I packaged my messages inside STX and ETX commands (some low-value ASCII characters). You can then extract the messages from your member string variable by searching for ETX commands (you can use whatever you want of course, even \n if you like).

Hope this helps a little!

Structured programming vs. chaotic mind boggling

Hadi Rezaee18-Jun-01 2:42

18-Jun-01 2:42

Thanks for your help ...
Your helps is very nice.

Now, i have other question, how can i take the phone ?
Does i must use of ATH1 for do it ?

My month article: Game programming by DirectX by Lan Mader.
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Hadi Rezaie

D.D. de Kerf18-Jun-01 20:48

18-Jun-01 20:48

Answering the phone:

1) Wait until it rings
2) Pick up the horn and say your name, preferably 'goodmoring' as well

Just kidding Smile | :)

Now this is how your modem should do this:

First you have to set the DTR to true. Don't ask me why, you just have to. You can use the SetDTREnable(true) function for that.

Then send the next message to the modem:
ATE1S0=1
followed by a carraige return - line feed again.

Now it will pick up the phone (if everything's okay, you will probably see the AA light on your modem light up... Auto Answering mode).

Now you're gonna have to poll the input buffer and as soon as you get a message from the modem (ended by a carraige return - line feed) which starts with the string 'CONNECT ', then you know the handshake has succeeded and your connection is open...

Good luck!

Structured programming vs. chaotic mind boggling

Hadi Rezaee19-Jun-01 2:08

19-Jun-01 2:08

Thanks aloooooooot for all helps.
Wink | ;)

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

Hadi Rezaee21-Jun-01 2:33

21-Jun-01 2:33

Hi again ...
I want to know can i control the Microphone in MSCOMM ?
Because i can dialing by MSCOMM, and i can hang up the phone and ... but when i speak in microphone, my friend can't hear my voice !!! why ??? Confused | :confused:

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

D.D. de Kerf21-Jun-01 4:14

21-Jun-01 4:14

Oh, well,

you lost me there. All I ever did was let 2 PC's communicate. I've no idea where the voice comes in... I don't even know if it IS possible, even though I think it should be... Confused | :confused:

Good luck!

Structured programming vs. chaotic mind boggling

Hadi Rezaee27-Jun-01 4:14

27-Jun-01 4:14

Hi again,

How are you ?, i have other question ...
I see example about MSCOMM in MSDN ..., in this example he write function for sending data(I wrote, too), but he write this function, too !!!

void DoEvents()
{
MSG msg;
while(PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE))
{
if(!AfxGetThread()->PumpMessage()) return;
}
}

Just, i want to know for recieving data, i must use of this function ???

Thanks.

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

D.D. de Kerf27-Jun-01 21:15

27-Jun-01 21:15

Hello again to you too,
I'm doing fine, thanks. What about you? I'm starting to get curious about the sort of application you're building at the moment... If it's not too rude sticking my nose into your business Wink | ;)

Anyways, I've left the MSComm story a month ago and am now busy programming some ASP-website.

About your question, this function looks like some weird windows-messaging function. I think it's probably a GUI-related function from the example. Shouldn't worry about it too much. I never used it and my application is working great.

Good luck!

Structured programming vs. chaotic mind boggling

Hadi Rezaee28-Jun-01 10:21