C# Discussion Boards - CodeProject

Ed.Poore15-Aug-06 1:25

Ed.Poore

15-Aug-06 1:25

With Interop wizardry Poke tongue | ;-P

Formula 1 - Short for "F1 Racing" - named after the standard "help" key in Windows, it's a sport where participants desperately search through software help files trying to find actual documentation. It's tedious and somewhat cruel, most matches ending in a draw as no participant is able to find anything helpful. - Shog⁹

Ed

Imtiaz Murtaza15-Aug-06 1:27

Imtiaz Murtaza

15-Aug-06 1:27

But how ? What APIs to call ?

Imtiaz

Ed.Poore15-Aug-06 1:38

Ed.Poore

15-Aug-06 1:38

Try typing in your question (in the subject line) as it is into Google. Take a look at the fourth or fifth result which is the first CodeProject hit. That should explain it all (but it is in C++).

Nader Elshehabi15-Aug-06 2:07

15-Aug-06 2:07

Hello

The best practice I can think of is to inherit a class from Windows.Form, and handle its drawing yourself

Otherwise putting a control outside the client area at runtime -though I think it's not impossible- would be extremely difficult

Regards Rose | [Rose]

app.config vs. myprog.exe.config

Member 861778022-May-12 9:50

Member 8617780

22-May-12 9:50

hi you can use this code Smile | Smile | :)

private void btnmin_Click(object sender, EventArgs e)
{

this.WindowState = FormWindowState.Minimized;

}

Frygreen15-Aug-06 0:44

Frygreen

15-Aug-06 0:44

Dear gurus,

I need your help.

For configuration I Sometimes see two typical files with a name as

"app.config" and "myprog.exe.config".

They seem to have similiar impact/meaning.

Can you give me some advice?

Thanks a log

Re: app.config vs. myprog.exe.config

Kevin McFarlane15-Aug-06 0:55

Kevin McFarlane

15-Aug-06 0:55

After building, app.config gets copied to your bin folder and is renamed as myprog.exe.config. So, as a developer app.config is the one you need to modify as required.

Kevin

Re: app.config vs. myprog.exe.config

Frygreen15-Aug-06 1:47

Frygreen

15-Aug-06 1:47

Thanks ! ! ! ! ! !

Recieve data

mehrdadc4814-Aug-06 22:47

14-Aug-06 22:47

Hi.
using the follow code I can answer to a call, but in the while loop, I want to receive data from the calling phone, that a person is speaking.

serialPort1.BaudRate = 56000;
serialPort1.PortName = "COM3";
serialPort1.ReadTimeout = 1000000;
serialPort1.Open();
serialPort1.Write("ATA\n\r"); //Answer a call
string str;
while (true)
{
str = serialPort1.ReadExisting();
}

Best wishes

stancrm14-Aug-06 23:10

stancrm

14-Aug-06 23:10

If you want to receive "data", then use :

while(true)
{
    try
    {
        string receivedMessage = serialPort1.ReadLine();
        Console.WriteLine(receivedMessage);
    }
    catch(TimeoutException)
    {
    }
}

Put this method in a new thread.

If you want to receive the "sound" from the person, I don't know how to do that.
I think, the "sound" is analog, that's why the modem is an analog modem.
You need something to digitalized it, something like Analog-Digital-Converter.

mehrdadc4814-Aug-06 23:23

14-Aug-06 23:23

No,
now it's important for me that when the person speaking, I receive data.
no exactly sound.
in the str I receive data.
how ?

Best wishes

stancrm15-Aug-06 0:54

stancrm

15-Aug-06 0:54

A normal analog modem doesn't do that.
If the modem receive a "sound", you receive nothing
from serial port. You can only hear from the modem
speaker that your partner say something.

mehrdadc4815-Aug-06 1:21

15-Aug-06 1:21

And if he presses any key of phone device, then again I can't receive any data ?

Best wishes

Nader Elshehabi15-Aug-06 1:35

15-Aug-06 1:35

Hello

When a caller presses a button in a voice call something called DTMF tone is generated. To learn how to handle DTMF tones revise your TAPI documentation in MSDN

Regards Rose | [Rose]

Nader Elshehabi15-Aug-06 1:31

Re: Recieve data [modified]

15-Aug-06 1:31

Hello

mehrdadc48 wrote:
I want to receive data from the calling phone, that a person is speaking.

Modems actually work in several modes. Two of them are
1- Voice calls
2- Data calls

You can not transfer data in a voice call. On the other hand you can transfer voice -as a data stream- in a data call. This is called Voice Over IP.

If you are making a voice call -for example an ordinary phone is calling your phone line, and you want to record this using your computer-. In this case you should capture the audio stream from the modme speaker's audio line.

If you are developing something like a messanger that works on phone line instead of the internet. Transfer your voice as an audio stream. This way you can transfer data with it-eg. files, pictures, text, etc...-

Your loop should work if it's a data call -supposing that your modem's AT command is working-. Yet take care that this loop will go forever until you call a break;

It it's not working for some reason or another, post more details on your problem, so that we could get more oriented with it.

Regards Rose | [Rose]

mehrdadc4815-Aug-06 5:23

15-Aug-06 5:23

"you should capture the audio stream from the modme speaker's audio line"
please tell me how to do this ?
And how this?
"Transfer your voice as an audio stream"

I prefer that do this in managed code in c#

-- modified at 11:34 Tuesday 15th August, 2006

Best wishes

Nader Elshehabi15-Aug-06 11:32

Re: Recieve data [modified]

15-Aug-06 11:32

Hello

Capturing audio from a line is done in several ways. The best practice would be using DirectX. Code samples would be long, and are inappropriate to post. Just search MSDN for "audio capture".

Transfering voice as an audio stream would also depend on the way you're capturing it. If you did capture it using DirectX technology, it would be simple using the DirectX API. Once you get the stream of byte, just send it to the port of the modem -assuming that you know which port of course-

There is a DirectX namespace in .Net framework. Anything you read in C++ you can do with C#.

In a quick search, here is some links:

1- http://www.codeproject.com/cs/media/directshownet.asp[^]
2- http://www.codeproject.com/cs/media/videosav.asp[^]
3- http://www.codeproject.com/cs/media/MdxSoundEx.asp[^]
4- http://www.codeproject.com/cs/media/audiosav.asp[^]

If you still need more details, just search CP for "Audio DirectX capture". Make sure to only check C# checkbox.

Regards Rose | [Rose]

mehrdadc4815-Aug-06 22:11

15-Aug-06 22:11

My freind,
I want to capture analog sound from modem ..

"You can not transfer data in a voice call"
I want to recieve voice in voice call(not data call), in my application not on modem speaker

-- modified at 5:37 Wednesday 16th August, 2006

Best wishes

Nader Elshehabi16-Aug-06 1:31