A simple question about recording - C / C++ / MFC Discussion Boards

Galatei13-Oct-06 0:43

13-Oct-06 0:43

The problem is that you call delete only when Create fails.
You should call delete once you are done with PropertySheet.

Regards

Re: leake of memory

zizzzz13-Oct-06 1:02

zizzzz

13-Oct-06 1:02

special thanks
thaaaaaaaannnnnkkkk you very veryyyyyyyyyyyyyyyyyy much Laugh | :laugh:

Re: leake of memory

zizzzz13-Oct-06 1:21

zizzzz

13-Oct-06 1:21

where should I put the second delete because i need it dispalyed until programm is close
I tried to put it in MainFrm in WM_ONCLOSE but it doesn't work

Re: leake of memory

Galatei13-Oct-06 1:38

Galatei

13-Oct-06 1:38

Try putting it in your CFormView's destructor, but It necessary to destroy its window first.

Regards

Re: leake of memory

zizzzz14-Oct-06 7:37

zizzzz

14-Oct-06 7:37

ok it's running

thank's very much Smile | :)

auto run problem

ooola13-Oct-06 0:04

ooola

13-Oct-06 0:04

Hi,
How can v use installshield to run our software burnt on cd. The s/w has been developed in VC++ 6.0, Plz tell me the whole process from installing install shield and running the exe saved in cd

Re: auto run problem

Galatei13-Oct-06 0:51

Galatei

13-Oct-06 0:51

You should be able to find information about installation process in IS documentation.
As for autorun:

For example:
in the root of your cd, create autorun.inf containing following section:

[AutoRun]
open=application.exe

That's all folks.
Regards

A simple question about recording

minihotto12-Oct-06 23:23

minihotto

12-Oct-06 23:23

I follow the following steps to write a simple record program
waveInOpen
waveInPrepareHeader
waveInAddBuffer
waveInStart
waveInGetPosition
waveInReset
waveInUnprepareHeader
waveInClose

The program runs with no errors.

But I create a file to record the voice.
HANDLE FileHandle = CreateFile( L"myTest.wav", GENERIC_WRITE, FILE_SHARE_READ, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
The wav file was created.
But I play rhe wav file by windows media player.
It says there is an error.

Is there any problem with my code?
My part code is below.

<br />
HANDLE FileHandle = CreateFile( L"myTest.wav", GENERIC_WRITE, FILE_SHARE_READ, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); <br />
WriteFile(FileHandle, &dwNumber, 4, &NumToWrite, NULL); <br />
SetEndOfFile(FileHandle); <br />
CloseHandle( FileHandle );  <br />
FileHandle = INVALID_HANDLE_VALUE;<br />

Can somebody help me?
Thanks a lot.
minihotto

Re: A simple question about recording

Cedric Moonen12-Oct-06 23:34

Cedric Moonen

12-Oct-06 23:34

minihotto wrote:
WriteFile(FileHandle, &dwNumber, 4, &NumToWrite, NULL);

You know that your file will only be 4 bytes ? I hardly believe this a valid file format for a wav file. Check the documentation of the WriteFile[^] function.

Also, you will need to follow the format reaquired for a wav file (I don't know it but if you search on google, you could find it).

minihotto wrote:
SetEndOfFile(FileHandle);

What are you trying to do here ?

Cédric Moonen
Software developer

Charting control [Updated - v1.1]

Re: A simple question about recording

minihotto13-Oct-06 6:10

minihotto

13-Oct-06 6:10

I see. thnaks.
this is the example I find from internet

<br />
HANDLE FileHandle = CreateFile( "Test.wav", GENERIC_WRITE, FILE_SHARE_READ, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); <br />
dwNumber = FCC("RIFF"); <br />
WriteFile(FileHandle, &dwNumber, 4, &NumToWrite, NULL); <br />

what is FCC?
I cant find it in the msdn.
can somebody help me ?
thanks a lot.
minihotto

Re: A simple question about recording

Cedric Moonen13-Oct-06 6:27

Cedric Moonen

13-Oct-06 6:27

It's probably a function that they developed themselves. But anyway, you first need to understand the file structure of the wav file in order to have something that can be played.

Cédric Moonen
Software developer

Charting control [Updated - v1.1]

Re: A simple question about recording

Galatei13-Oct-06 1:02

Galatei

13-Oct-06 1:02

minihotto wrote:
HANDLE FileHandle = CreateFile( L"myTest.wav", GENERIC_WRITE, FILE_SHARE_READ, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
WriteFile(FileHandle, &dwNumber, 4, &NumToWrite, NULL);
SetEndOfFile(FileHandle);
CloseHandle( FileHandle );
FileHandle = INVALID_HANDLE_VALUE;

This file doesn't even have a header, and your code wrote only 4 bytes of data to it, so how would you want it to be played?

Regards

Re: A simple question about recording

Hamid_RT13-Oct-06 1:04

Hamid_RT

13-Oct-06 1:04

In addition use of CREATE_ALWAYSoverwrite your file if its exist

WhiteSky

Re: A simple question about recording

Mark Salsbery13-Oct-06 6:59

Mark Salsbery

13-Oct-06 6:59

Microsoft's WAV file format is well documented.

A quick GOOGLEY search found this one

WaveFormat[^]

By the way, FCC() is just somebody's function for dealing with FOURCC codes - four characters
which need to be written in order in a big-endian/little-endian integer world.

Mark

Working with file???

sonyama12-Oct-06 23:06

sonyama

12-Oct-06 23:06

I stored the string "wellcome to my life" in file.
Later, when i tried
fflush(stdin);input>>tmp;
cout<<"string: "<<tmp<<endl;cout.flush();
the string="" is="" displayed="" only="" "wellcome"
would="" you="" mind="" telling="" me="" how="" to="" solve="" the="" problem
thanks=""

<div="" class="ForumSig">hehe

Re: Working with file???

prasad_som12-Oct-06 23:14

prasad_som

12-Oct-06 23:14

would you post complete code ?

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: Working with file???

sonyama12-Oct-06 23:18

sonyama

12-Oct-06 23:18

Here is how it goes, thanks

void ReadList()
{
int n,i;
char *tmp = new char[255];

ifstream input(filename,ios::in);
if (!input)
{
cout<<"Khong mo duoc file"<<endl;
exit(1);
="" }
="" input="">>n;

for (i=0;i<n;i++)
{
="" fflush(stdin);input="">>tmp;
cout<<"Ten sinh vien: "<<tmp<<endl;cout.flush();getch();
fflush(stdin);input="">>tmp;
cout<<" Ngay sinh: "<<tmp<<endl;cout.flush();getch();
fflush(stdin);input="">>tmp;
cout<<" Lop: "<<tmp<<endl;cout.flush();getch();
fflush(stdin);input="">>tmp;
cout<<" Diem TBC: "<<tmp<<endl;cout.flush();getch();
cout<<"\n";
="" }
="" input.close();
}=""

<div="" class="ForumSig">hehe

Re: Working with file???

prasad_som12-Oct-06 23:51

prasad_som

12-Oct-06 23:51

Is there any problem in reading line by line or character by character,

while (input.good())
{
input.getline(tmp ,255);
cout<<tmp <<end;
}

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: Working with file???

Galatei13-Oct-06 2:29

Galatei

13-Oct-06 2:29

Hi,

In case of >> operator, string is extracted up to the first whitespace character, and that's why you can't read entire string.
Use getline instead.

working example:

const int slen = 256;
char tmp[slen] = "Sit on my face...";
ofstream ofile("c:\\test.txt", ios::out);
ofile << tmp << endl; ofile.flush();
ofile.close();

char tmp2[slen];
ifstream ifile("c:\\test.txt", ios::in);
ifile.getline(tmp2, 256);
cout << tmp2 << endl;
ifile.close();

Regards

Folder Permission

_tasleem12-Oct-06 21:57

_tasleem

12-Oct-06 21:57

hi all i want to make permission on the folders through vc++ code so that any user does not access those folders and delete their files,basically i m making the document Management System and want for that any help is welcomed.

Tasleem Arif

Re: Folder Permission

Mila02512-Oct-06 22:11

Mila025

12-Oct-06 22:11

Hi,

You will modify files and folders ACLs - this can be useful for you:

Modifying the ACLs of an Object in C++[^]

-----------
Mila

Changing the Font of a Dialog Static Label

Andy20212-Oct-06 21:52

Andy202

12-Oct-06 21:52

I was trying to change the font of some labels on a dialog, I used the following code:

HBRUSH CTabOne::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)<br />
{<br />
	/* Arrange for the labels to be drawn in yellow on a black background. Also<br />
	need to arrange for the background colour of the dialog to be black. */<br />
<br />
	HBRUSH hbr = NULL;<br />
	// Font for the current waypoint marker<br />
	CFont LabelFont;<br />
	if(nCtlColor == CTLCOLOR_DLG || nCtlColor == CTLCOLOR_STATIC)<br />
	{<br />
		if(pWnd->GetDlgCtrlID() == IDC_STATIC_COMMAND)<br />
		{<br />
			// Set up the Font for the Group boxes<br />
			LabelFont.CreateFont (14,14,0,0,FW_BOLD, FALSE, FALSE, 0, DEFAULT_CHARSET,<br />
				OUT_CHARACTER_PRECIS, CLIP_CHARACTER_PRECIS, DEFAULT_QUALITY,<br />
				DEFAULT_PITCH, NULL);<br />
			pWnd->SetFont (&LabelFont, TRUE);<br />
		}<br />
	}<br />
	return hbr;<br />
}

And included

ON_WM_CTLCOLOR()

in the message map.

But looking at the processing that is being done ~ 50%, I have got something wrong! Also the labels 'flicker'.

As these are static labels, just need the Font set during dialog initialsation.

A bit confused as to how to set up the OnCtlColor parameters if thats the way to do it.

Any suggestions please.

Andy.

Re: Changing the Font of a Dialog Static Label

prasad_som12-Oct-06 22:33

prasad_som

12-Oct-06 22:33

Why dont you use CWnd::SetFont() for this purpose? Instead of above code.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: Changing the Font of a Dialog Static Label

Mila02512-Oct-06 22:43

Mila025

12-Oct-06 22:43

Hi,

instead: pWnd->SetFont (&LabelFont, TRUE);
use: pDC->SelectObject( LabelFont );

and don't forget about delete font object
LabelFont->DeleteObject();

Works pretty good Smile | :)

-----------
Mila

Re: Changing the Font of a Dialog Static Label

prasad_som12-Oct-06 23:04

prasad_som

12-Oct-06 23:04

Mila025 wrote:
use: pDC->SelectObject( LabelFont );

Why?
SetFont can be called from OnInitDialog. As it needs to be set once. Why you want to set it again and again.(it will be called each time window is painted).

Prasad
Notifier using ATL | Operator new[],delete[][^]

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