C / C++ / MFC Discussion Boards

prithaa9-Mar-09 20:19

9-Mar-09 20:19

Hello,

I have created ac CView object for a CMDIChildWnd but now I am not able to destroy it.It works fine otherwise . But how to destroy an object of type CView .
I am not useing Doc-View Achitecture and have no idea or little about CRuntime Class.

Prithaa

Re: CView problem

Code-o-mat9-Mar-09 22:51

Code-o-mat

9-Mar-09 22:51

Give more details, please, how do you mean "destroy it", how/when you try to do it and what happens?

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

Re: CView problem

prithaa9-Mar-09 23:47

prithaa

9-Mar-09 23:47

thanks for your reply

I got my problem

Can I change defined value or const value?

z01e9-Mar-09 20:17

z01e

9-Mar-09 20:17

First i wrote this code to test some algorithm. And it's work but somehow there is a problem when i assemble it with another program. This is some code of my program.

<br />
#define numpic 2 // or const int numpic = 2;<br />
#define numline 20 // or const int numline =20;<br />
int numpictest;<br />
<br />
void swapy(int a[numline][numpic])<br />
{<br />
...<br />
}<br />
<br />
void main()<br />
{<br />
	readnumpic(numpictest); // get value<br />
	numpic = numpictest; // This one get error!! because i can't change defined value or const value<br />
        int size[numpic]; <br />
        ...<br />
}<br />

As you can see that my function and declaration use the value from defined value. But i want this program to be more dynamic (I can change the "numpic" and "numline" variable in main). So is there a way i can change defined value or const value?

Thank you for every help.

Re: Can I change defined value or const value?

Hamid_RT9-Mar-09 20:20

Hamid_RT

9-Mar-09 20:20

You cant change value of constants.

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

Re: Can I change defined value or const value?

Cedric Moonen9-Mar-09 21:42

Cedric Moonen

9-Mar-09 21:42

z01e wrote:
So is there a way i can change defined value or const value?

Why would you do that ? If it is constant, it means it can't be modified. Why do you declare it as constant then ?
And for the #define, it is just a preprocessor directive: before compiling your sources, every occurence of the text "numpic" will be replaced by the text "2". So, it's normal that you can't assign anything to it.

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Re: Can I change defined value or const value?

Iain Clarke, Warrior Programmer10-Mar-09 1:07

Iain Clarke, Warrior Programmer

10-Mar-09 1:07

As Cedric said, think about what the compiler sees.

#define numpic 2
...
numpic = numpictest;

becomes:

2 = numpictest;

You would not expect that to work.

As for the other option...

Look up the work "constant" in the dictionary.

If you want it to be casually changable, that is the exact opposite of a constant. A Variable.

I'm not sure how to give a more helpful / friendly answer, as it will depend a lot on the rest of your application, and how you're interacting from different programs. Do you want to pass a number as a parameter?

ie:

myalgorithmapp.exe /pi=7.2

?

Iain.

Iain.

Codeproject MVP for C++, I can't believe it's for my lounge posts...

Re: Can I change defined value or const value?

KarstenK10-Mar-09 2:12

KarstenK

10-Mar-09 2:12

a #define gots compiled fixed as value in the build, so you cant change it. D'Oh! | :doh:

int numpic = 2;

You better wrote that your a newbie Blush | :O

Greetings from Germany

Can we capture sound using c++?

Markandaiya Harsh9-Mar-09 20:17

Markandaiya Harsh

9-Mar-09 20:17

hi, my question is can we capture sound using c++? if yes how do we do that?? please help me!!

Re: Can we capture sound using c++?

Hamid_RT9-Mar-09 20:19

Hamid_RT

9-Mar-09 20:19

Yes you can do it with MCI's (MCI_RECORD).
A Simple Voice Recording Application Using MCI[^].

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

Re: Can we capture sound using c++?

ShiXiangYang9-Mar-09 21:25

ShiXiangYang

9-Mar-09 21:25

MCI_OPEN_PARMS mciOpen;
mciSendCommand(NULL,MCI_OPEN,MCI_OPEN_ELEMENT,(DWORD)(LPVOID&mciOpen);
DWORD m_waveID=mciOpen.wDeviceID;
MCI_RECORD_PARMS mciRecord;
mciRecord.dwFrom=0;
mciSendCommand(m_waveID,MCI_RECORD,MCI_FROM,(DWORD)(LPVOID)&mciRecord);

Re: Can we capture sound using c++?

Hamid_RT9-Mar-09 21:29

Hamid_RT

9-Mar-09 21:29

Thank you but I need to use it or see it! Big Grin | :-D

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

Re: Can we capture sound using c++?

Markandaiya Harsh12-Mar-09 1:37

Markandaiya Harsh

12-Mar-09 1:37

Sir I wasn't able to understand the code u proposed to me can u please give me a simpler code or can u explain me that code (mci)....sir please guide me.
thank you .

Re: Can we capture sound using c++?

Hamid_RT12-Mar-09 20:01

Hamid_RT

12-Mar-09 20:01

That code was easy first you need to set your device (waveaudio) and then you need to open it for use then you need to set MilliSeconds that you want to record and then you send MCI_RECORD to your device and finaly you need to save ypur file with set its name(MCI_SAVE).

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

Re: Can we capture sound using c++? - On "ShiXiangYang"'s behalf

Iain Clarke, Warrior Programmer10-Mar-09 1:09

Iain Clarke, Warrior Programmer

10-Mar-09 1:09

He wrote this reply for you. Please reply to his message, not mine!
http://www.codeproject.com/script/Forums/View.aspx?fid=1647&msg=2957301[^]
- Iain.

-------------------------

MCI_OPEN_PARMS mciOpen;
mciSendCommand(NULL,MCI_OPEN,MCI_OPEN_ELEMENT,(DWORD)(LPVOID&mciOpen);
DWORD m_waveID=mciOpen.wDeviceID;
MCI_RECORD_PARMS mciRecord;
mciRecord.dwFrom=0;
mciSendCommand(m_waveID,MCI_RECORD,MCI_FROM,(DWORD)(LPVOID)&mciRecord);
Reply·Email·View Thread·PermaLink·Bookmark

Codeproject MVP for C++, I can't believe it's for my lounge posts...

I need a source code in c++.

Markandaiya Harsh9-Mar-09 20:12

Markandaiya Harsh

9-Mar-09 20:12

I need a source code for a program which takes sound as its input and tell the user which note(for the octate) was played,was the note correct or not. where can I get its scource code. please help me.

Re: I need a source code in c++.

_AnsHUMAN_ 9-Mar-09 20:16

_AnsHUMAN_

9-Mar-09 20:16

Some questions.

Markandaiya Harsh wrote:
I need a source code for a program which takes sound as its input

From where does it take the input. Do you read it from some device?

Markandaiya Harsh wrote:
user which note(for the octate) was played,

How does the user play a sound?

Markandaiya Harsh wrote:
where can I get its scource code

This[^] may help

You need to google first, if you have "It's urgent please" mentioned in your question.
Wink | ;-)

_AnShUmAn_

Re: I need a source code in c++.

Hamid_RT9-Mar-09 20:17

Hamid_RT

9-Mar-09 20:17

Do you need an example like a piano?

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

Re: I need a source code in c++.

Markandaiya Harsh9-Mar-09 20:19

Markandaiya Harsh

9-Mar-09 20:19

yes i do need an example like piano..

Re: I need a source code in c++.

Hamid_RT9-Mar-09 20:28

Hamid_RT

9-Mar-09 20:28

See CPianoCtrl - A Display Piano Control[^].

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

Re: I need a source code in c++.

Markandaiya Harsh9-Mar-09 20:42

Markandaiya Harsh

9-Mar-09 20:42

I need somthing like note detector... it will dectect the notes while I am singing or playing an instrument.

need help on C# ITEXT

YiXiang_899-Mar-09 19:38

YiXiang_89

9-Mar-09 19:38

hi all,
This is what i found on the web

public static PdfFileSpecification fileEmbedded(PdfWriter writer,String filePath,String fileDisplay,
byte[] fileStore,int compressionLevel)
{
Parameters:
writer - the PdfWriter
filePath - the file path
fileDisplay - the file information that is presented to the user
fileStore - the byte array with the file. If it is not null
compressionLevel - the compression level to be used for compressing the file it takes precedence over filePath

} <---- what to type inside?

So this help to transfer the html that have been converted to pdf to store inside a file ?

does anyone know how to convert html to pdf using C#?
Cause the web i find are about java

Thank you

Re: need help on C# ITEXT

Chandrasekharan P9-Mar-09 19:58

Chandrasekharan P

9-Mar-09 19:58

Wrong Forum my dear friend!!!!

Re: need help on C# ITEXT

YiXiang_899-Mar-09 20:06

YiXiang_89

9-Mar-09 20:06

how come?

need help on how to convert using C#
html - pdf

Re: need help on C# ITEXT

Iain Clarke, Warrior Programmer10-Mar-09 1:12

Iain Clarke, Warrior Programmer

10-Mar-09 1:12

This is the C++ forum.
There is a C# forum[^].

These are different things.

If you post in the correct forum, you're more likely to have knowledgable people see your question. This is in your own interest.

Iain.

Codeproject MVP for C++, I can't believe it's for my lounge posts...

Last Visit: 31-Dec-99 18:00 Last Update: 23-May-24 2:53

Refresh

ᐊ Prev 1...3391 3392 3393 339433953396 3397 3398 3399 3400 Next ᐅ

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.