C / C++ / MFC

Re: A question about recording

17-Oct-06 11:43

A really simple way would be to use the samples-per-second of the audio you are recording.

Stop writing after (samples-per-second * 120 * bytes-per-sample) bytes have been written.
It's not "real time" but it's accurate for the audio stream.

Mark

alphaxz17-Oct-06 19:17

alphaxz

17-Oct-06 19:17

Can you give me some code to see?

I want to have many friends

Re: A question about recording

Mark Salsbery18-Oct-06 6:35

Re: "Back" feature in VC++

18-Oct-06 6:35

kevinalphaxz wrote:
Can you give me some code to see?

Honestly? No.

"Back" feature in VC++

Oliver12317-Oct-06 9:57

Oliver123

17-Oct-06 9:57

Is there a "Back" feature in C++?

I often come across a structure reference or variable in a program. I put the cursor on it, hit F12, and jump to the definition of the structure. Then I want to go right back to where I came from. Any neat way to do this other than just navigate back?

Thanks

Christian Graus17-Oct-06 12:35

Christian Graus

17-Oct-06 12:35

CTRL - works in VS2005.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Re: "Back" feature in VC++

Michael Dunn18-Oct-06 16:00

Michael Dunn

18-Oct-06 16:00

In VC 6, it's Ctrl + NumPad -

--Mike--
Visual C++ MVP Cool | :cool:

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Accessing a website using MFC/C++

veikko17-Oct-06 8:28

veikko

17-Oct-06 8:28

First of all, I admit freely that I have little knowledge in internet technology.

I want to read in parts of a website using C++/MFC. Using CHttpFile.functions I'm already able to read the webpage into a file. BUT: The problem is, I have to type in my nickname and passwort to reach the data in my account on this website. Can somebody tell me what to do? Or give me a hint what book/article/tutorial to read?

thanks, Veikko.

Additional info:
I analysed the html-code the website returns and I think I found the piece of code that submits the data:

...

I guess that this calls a script on the server to have the subroutine "checkLogin()" executed. checkLogin() is a html-routine that is also available in the website's sourcecode; it reads the values from the edit boxes.
My problem is now: 1. how do I set the value of the edit box to my password and 2. how do I trigger that server-script from my C++ program?

P.S.: Since my question touches C++ as well as internet-programming I posted this question in the "Internet"-board too.

David Crow17-Oct-06 8:35

17-Oct-06 8:35

I know of a way to do this, but it is not C++. It is VB script.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

veikko17-Oct-06 10:01

veikko

17-Oct-06 10:01

Even if its VB script, let me know. Maybe I find a way to convert it..

Veikko.

David Crow17-Oct-06 10:50

17-Oct-06 10:50

Here's one I used to use with the HowStuffWorks forum:

Dim objIE
Set objIE = WScript.CreateObject("InternetExplorer.Application")
 
objIE.Navigate "http://forum.howstuffworks.com/login.php?Cat="
objIE.Visible = true
 
While objIE.Busy = true
Wend
 
objIE.Document.All("Loginname").Value = "DavidCrow"
objIE.Document.All("Loginpass").Value = "pwd"
objIE.Document.All.Item("option", 0).Click

The last line is what "clicked" the button.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

veikko17-Oct-06 19:03

veikko

17-Oct-06 19:03

Thanks, David, dor the quick answer. I'm going to try this.

veikko.

Memory Overrun! in MFC

mostafa_pasha17-Oct-06 8:25

mostafa_pasha

17-Oct-06 8:25

Hi,

I have function that i allocate very large data
in Heap, after i create with new & use it
when i want to delete these , there is memory
overrun error & i do not know how can i solve that!

David Crow17-Oct-06 8:37

17-Oct-06 8:37

mostafa_pasha wrote:
...there is memory
overrun error...

What do the new and delete statements look like?

Is the pointer returned from new being changed (e.g., incremented?

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Zac Howland17-Oct-06 8:52

Zac Howland

17-Oct-06 8:52

It is hard to help you if you don't at least show the relevant portions of your code.

If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week

Zac

David Crow17-Oct-06 9:02

17-Oct-06 9:02

Didn't you get the memo, Zac? Today is guess-what's-wrong-with-my-code-without-seeing-it day. Wink | ;)

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Zac Howland17-Oct-06 9:19

Zac Howland

17-Oct-06 9:19

Apparently it fell under the stack of memos reminding me to fill out my damn TPS reports.

If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week

Zac

charlieg29-Oct-06 13:06

charlieg

29-Oct-06 13:06

lol - I LOVE that movie!

.... reaching for my red stapler

Charlie Gilley
Will program for food...
Whoever said children were cheaper by the dozen... lied.

My son's PDA is an M249 SAW.
My other son commutes in an M1A2 Abrams

Mark Salsbery17-Oct-06 9:05

17-Oct-06 9:05

mostafa_pasha wrote:
there is memory
overrun error & i do not know how can i solve that!

Don't overrun the end of your allocated memory.

Mark

ThatsAlok18-Oct-06 4:59

ThatsAlok

18-Oct-06 4:59

Mark Salsbery wrote:
Don't overrun the end of your allocated memory.

HI Mark,
could you explain it further do you mean something like this

int* pnSize=new int[10];
pnSize[10]=10;// which is not available
delete [] pnSize;

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You

Mark Salsbery18-Oct-06 6:37

18-Oct-06 6:37

That is extremely well done, yes Smile | :)

cheers,
Mark

Mark Salsbery18-Oct-06 6:40

18-Oct-06 6:40

Actually I was wrong about your code being "well done"...

The original poster said "i allocate very large data".

Therefore, your code sample should be:

int* pnSize=new int[100];
pnSize[100]=10;// which is not available
delete [] pnSize;

D'Oh! | :doh:

Have a great day,
Mark

mostafa_pasha18-Oct-06 9:15

mostafa_pasha

18-Oct-06 9:15

excuse me for delay to response,
//OVERRUN is for Pitch array ....

<br />
	char *BeginFile = NULL; <br />
	BeginFile = new char[44]; <br />
<br />
<br />
	try <br />
	{<br />
		File.Read(BeginFile,44);<br />
	}<br />
	catch(CFileException *pe) <br />
	{<br />
	pe->ReportError();<br />
	}<br />
<br />
	DWORD dwLength = (File.GetLength()-44);<br />
<br />
	char *inChar ;			<br />
	inChar = new char[800000];<br />
<br />
<br />
	try <br />
	{<br />
		File.Read(inChar,dwLength);<br />
	}<br />
	catch(CFileException *pe) <br />
	{<br />
	pe->ReportError();<br />
	}<br />
	File.Close();<br />
<br />
	int tmp;<br />
	unsigned char c1,c2;<br />
        double *in ;			<br />
	in = new double[400000];<br />
<br />
	<br />
	int smp=dwLength/2;<br />
	<br />
	const int fs=22050;		<br />
	const int fc=7500;		<br />
	int kc = floor( (double)(fc * N / fs) )+1;	<br />
	int len=ceil((double)smp/N*2)+1;<br />
	double *CBn ;<br />
	CBn = new double[kc*len];<br />
<br />
	int sizeCB;<br />
	sizeCB = Netmfile.Feature( in , kc ,smp , CBn );<br />
<br />
	<br />
	int *Pitch = NULL;<br />
	Pitch = new int[3000];  // :wtf:if use 2000 have OVERRUN PROBLEM IF use 3000 DO NOT HAVE OVERRUN PROBLEM:omg:<br />
        // PitchExtract shown below<br />
         int LenPitch = Netmfile.PitchExtract( in ,smp ,Pitch );<br />
<br />
	delete in;<br />
	delete BeginFile;<br />
	delete in;<br />
	delete BeginFile;<br />
        char weigthpath[]="text\\";	//path of MAT to TXT file<br />
<br />
	double *CB1t ;<br />
	CB1t = new double [kc*len];<br />
<br />
	Netmfile.net( CBn , CB1t , kc , weigthpath , sizeCB );<br />
<br />
	Netmfile.z = sizeCB * N - (sizeCB-1) * (N/2);<br />
	smp2 = new double [Netmfile.z];<br />
	for (i=0 ; i<Netmfile.z ; i++)<br />
		smp2[i]=0;<br />
<br />
	delete CBn;<br />
	delete CB1t;<br />
        delete Pitch;   // :confused:have problem.......................use devpartner say OVERRUN<br />
<br />
}<br />
<br />
<br />
//pitch extract function<br />
<br />
int mfile::PitchExtract( double *input ,int lengthwav ,int *pitch )<br />
{<br />
<br />
	a=49;<br />
	p=0; m=0; k=0; i= 0;  j=0;<br />
	maxfft=0;<br />
	maxpos=0;<br />
         int *pichi= NULL;<br />
	pichi = pitch;<br />
<br />
	<br />
	while ( m< lengthwav-N )<br />
	{<br />
		//SAY THAT MAX VALUE FOR p is 1271 sucth smaller that 2000 or 3000			<br />
		*pichi= maxpos + 1;<br />
		m = m + *pichi;<br />
		pichi++;<br />
		p++;<br />
	}<br />
<br />
<br />
	m=1;<br />
	i=0;<br />
	pichi = pitch;<br />
	while (i<p)<br />
	{<br />
		m=m+pichi[i];<br />
		if (m>N/2)<br />
		{<br />
			for ( j=p ; j>=i+1 ; j--)<br />
				pichi [ j ] = pichi [ j - 1 ] ;<br />
			pichi [ i ] = N/2;<br />
			pichi [ i + 1 ] = m - N/2;<br />
			m=0;<br />
			p++; <br />
		}<br />
 		i++;<br />
	}<br />
	return (p);<br />
}<br />

Mark Salsbery18-Oct-06 9:56

18-Oct-06 9:56

First of all...what's going on in these sections....you left something out

for (i=0 ; i smp2[i]=0;

delete CBn;
delete CB1t;
delete Pitch; // have problem.......................use devpartner say OVERRUN

}

...

while (i {
m=m+pichi[i];
if ...

Mark