C / C++ / MFC

Re: For the beginner-Its me.

1-Jan-07 22:33

If you browse through C++/MFC[^] section of this site, you will get articles to start with.
Here is an example[^].

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

Hamid_RT2-Jan-07 2:36

Re: For the beginner-Its me.

2-Jan-07 2:36

See www.cplusplus.com[^]

WhiteSky

ThatsAlok2-Jan-07 18:58

ThatsAlok

2-Jan-07 18:58

lp4me wrote:
Anyone has something for me? I'm a beginner in Visual C++. And I want to learn the begin lessons. Anyone help?

better bought some book, after that refer net article

lp4me wrote:
If could, post a reply or simply send message to me at: thomasjohnsilver@gmail.com

sorry this online forum.. no body email you the books or reference

"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

Getting junk data.

Taruni1-Jan-07 20:01

Taruni

1-Jan-07 20:01

Hi,

while I am trying to retrieve the data from the database, where ever there is blank space (empty) in the correspoding column ,I am getting junk values.
This is my code.

VARIANT v;
v.vt=VT_BSTR;
CString str;
str = " ";
while(!(VARIANT_TRUE == pRecSet->EndOfFile))
{
str = pRecSet->GetCollect(v).bstrVal; .
//There is some junk data in str;

.
.
}

Should I do any other initialization or conversion? I have even tried using "NULL" but failed.

Thanks in advance.

Taruni

prasad_som1-Jan-07 20:09

1-Jan-07 20:09

Taruni wrote:
VARIANT v;

Use VariantInit to initialize the variant. Your code will be like this,

VARIANT v; 
VariantInit(&v);
v.vt=VT_BSTR;

Check value of vt after using it in function. In other words, are you sure function in populates vt with VT_BSTR.

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

Taruni1-Jan-07 20:16

Taruni

1-Jan-07 20:16

Hi Prasad,

Thank you for your immediate response.

VariantInit(&v);
I already tried this and but no use.

Taruni

prasad_som1-Jan-07 20:20

1-Jan-07 20:20

What about my second point ? Does vt is initiailized to VT_BSTR , After using it as parameter ?
If yes, Do you see junk values in bstrVal of variant argument ?

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

Re: Getting junk data. [modified]

Taruni1-Jan-07 21:23

Taruni

1-Jan-07 21:23

Yes Prasad ..there are is still junk data in bstarVal.

My code is as follows :

VARIANT v;
VariantInit(&v);
v.vt=VT_BSTR;
CString str;
str = " ";
while(!(VARIANT_TRUE == pRecSet->EndOfFile))
{
str = pRecSet->GetCollect(v).bstrVal;
.
.
}

Taruni

prasad_som1-Jan-07 21:53

problem with PlaySound(,,,)

1-Jan-07 21:53

Which class does GetCollect belongs to ?

-- modified at 4:24 Tuesday 2nd January, 2007

How it is declared ? If it is out parameter, you are not using its value further. Instead you are using its return value.

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

Kiran Pinjala1-Jan-07 18:57

Kiran Pinjala

1-Jan-07 18:57

I am receiving some voice file from the network i am storing it into a buuffer using Receive() function and that is a sound file which is converted into a wave format. I am trying to play that buffer here in the recieving side using

PlaySound(Buff,NULL,SND_MEMORY|SND_ASYNC)

but i could not here anything after playing.

But if i am saving that buffer into a .wav file and play it by a doubleclick on the file it plays the sound. Where might be the problem?

Thanks in advance!

KIRAN PINJARLA

prasad_som1-Jan-07 22:15

1-Jan-07 22:15

kiran.pinjarla wrote:
PlaySound(Buff,NULL,SND_MEMORY|SND_ASYNC)

I assume, Buff contains sound bytes you recevied. But what MSDN suggests PlaySound has first parameter which points to image file. In other words,its should be stored on disk.

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

Kiran Pinjala1-Jan-07 22:52

Kiran Pinjala

1-Jan-07 22:52

I found

A sound event's file is loaded in RAM. The parameter specified by pszSound must point to an image of a sound in memory.

in the MSDN. I guess that mean it should be stored in the RAM rather than disk.
That's what i did (Buff.
Is't it?

KIRAN PINJARLA

prasad_som1-Jan-07 22:56

1-Jan-07 22:56

kiran.pinjarla wrote:
I guess that mean it should be stored in the RAM rather than disk

Agree, but in your case it is pointing to buffer rather than file name.

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

Mark Salsbery2-Jan-07 5:59

Mark Salsbery

2-Jan-07 5:59

What happens if you do this:

PlaySound(Buff,NULL,SND_MEMORY|SND_SYNC)

Are you sure Buff is valid for the duration of playback?

Hamid_RT3-Jan-07 6:56

Sending Email with C++. Possible?

3-Jan-07 6:56

Are you sure Buff is valid? did you trace when it filled?

WhiteSky

arbster1-Jan-07 18:26

arbster

1-Jan-07 18:26

I'm working on a project and was wondering if there is a class like C#'s MailMessage (but for C++, I'm using visual studio 2003) that will allow me to write a program that will automatically send me an error log every month or so. I'm kind of new to the C++ world and would appreciate any help. Thanks!! Smile | :)

Christian Graus1-Jan-07 18:35

Christian Graus

1-Jan-07 18:35

There's nothing built into the language, no. MAPI is the easiest way to go.

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

bob169721-Jan-07 18:53

bob16972

1-Jan-07 18:53

If you need simple email alert notifications from a service and don't plan on implementing more than the basics, you can easily derive a basic mail client from RFC 2821 & 2822. RFC 2822 is probably the simpler and the more helpful of the two for implementing simple alerts.

Using the winsock2 api, just write a class that performs the steps you use when testing an SMTP server with a telnet session.

Taka Muraoka1-Jan-07 19:53

Taka Muraoka

1-Jan-07 19:53

Blat[^] is a C library that lets you send emails. It's pretty horrible code but it does the job.

0 bottles of beer on the wall, 0 bottles of beer, you take 1 down, pass it around, 4294967295 bottles of beer on the wall.

Awasu 2.2.4 [^]: A free RSS/Atom feed reader with support for Code Project.

ThatsAlok1-Jan-07 23:25

ThatsAlok

1-Jan-07 23:25

arbster wrote:
studio 2003) that will allow me to write a program that will automatically send me an error log every month or so. I'm kind of new to the C++ world and would appreciate any help. Thanks!

Mail![^]

"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

Hamid_RT3-Jan-07 6:57

wav to mp3 coverter using vc++ help needed

3-Jan-07 6:57

See Email on the http://www.codeguru.com/cpp/i-n/internet/

WhiteSky

alphaq1-Jan-07 18:14

alphaq

1-Jan-07 18:14

could someone pls help me i am trying to create a a wav to mp3 convertor but i have no clue how to start ,could someone guide me to how to create the converter

ty in advance

Re: wav to mp3 coverter using vc++ help needed

Trollslayer2-Jan-07 1:21

Trollslayer

2-Jan-07 1:21

Dearch on Codeproject or search Googel for "madlib".

The tigress is here Big Grin | :-D

Re: wav to mp3 coverter using vc++ help needed

Hamid_RT3-Jan-07 6:57