C / C++ / MFC Discussion Boards

Re: Merge project

Max++2-Aug-07 1:47

Max++

2-Aug-07 1:47

Thanks a lot but what the function use for change menu.

Re: Merge project

KarstenK2-Aug-07 1:50

KarstenK

2-Aug-07 1:50

"Read The Fine Manual": about CMenu or look here at CP for samples.

Greetings from Germany

Re: Merge project

Max++2-Aug-07 2:19

Max++

2-Aug-07 2:19

Thanks You

Retrieve a character from a string

Perspx2-Aug-07 0:26

Perspx

2-Aug-07 0:26

I have a string in memory, pointed to by a char pointer (char *). So say if the buffer is declared as:

char *buffer;

then some memory is allocated with:

buffer=(char *)malloc(10);

then some text is placed here:

strcpy(buffer, "some text");

then i want to return a character from buffer (for example, the first character which is 's'), how do I do this?

--PerspX

"Nowadays, security guys break the Mac every single day. Every single day, they come out with a total exploit, your machine can be taken over totally. I dare anybody to do that once a month on the Windows machine." - Bill Gates

Re: Retrieve a character from a string

mandanani2-Aug-07 0:51

mandanani

2-Aug-07 0:51

I think both will return character at i position. i starts from 0

*(buffer+i)
*buffer[i]

Re: Retrieve a character from a string

KarstenK2-Aug-07 1:40

KarstenK

2-Aug-07 1:40

I think

*(buffer+i)
buffer[i] //<=changed Blush | :O

Greetings from Germany

Re: Retrieve a character from a string

CPallini2-Aug-07 0:52

CPallini

2-Aug-07 0:52

Perspx wrote:
char *buffer;

then some memory is allocated with:

buffer=(char *)malloc(10);

then some text is placed here:

strcpy(buffer, "some text");

You're lucky: the string fits exactly inside the buffer (i.e. take care)!

Perspx wrote:
then i want to return a character from buffer (for example, the first character which is 's'), how do I do this?

buffer[0] or *buffer.
Smile | :)

P.S. Remember to free the buffer.

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: Retrieve a character from a string

Paresh Chitte2-Aug-07 0:52

Paresh Chitte

2-Aug-07 0:52

buffer[n] will return nth character.

Regards,

Paresh.

Re: Retrieve a character from a string

Sivaprasad S Nair2-Aug-07 1:21

Sivaprasad S Nair

2-Aug-07 1:21

char *buffer;

//then some memory is allocated with:

buffer=(char *)malloc(10);

then some text is placed here:

strcpy(buffer, "some text");

char c;

for(int i(0);i<10;i++)
{
c=*(buffer+i);//return each character from the buffer

cout<

Re: Retrieve a character from a string

toxcct2-Aug-07 2:40

toxcct

2-Aug-07 2:40

Paresh Chitte wrote:
buffer[n] will return nth character.

wrong. it returns the (n+1)th character

[VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

Re: Retrieve a character from a string

Sivaprasad S Nair2-Aug-07 18:39

Sivaprasad S Nair

2-Aug-07 18:39

please explain

Re: Retrieve a character from a string

toxcct2-Aug-07 21:13

toxcct

2-Aug-07 21:13

the 1st character is at index 0, so, the index retrieves the (n-1)th character... is it that hard to understand ?

[VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

Re: Retrieve a character from a string

Paresh Chitte2-Aug-07 21:19

Paresh Chitte

2-Aug-07 21:19

Thanks.

Regards,

Paresh.

Re: Retrieve a character from a string

Sivaprasad S Nair2-Aug-07 18:48

Sivaprasad S Nair

2-Aug-07 18:48

Try this code
its working
no change in previous code

#include "stdafx.h"
#include <stdio.h>
#include <iostream.h>

#include "stdlib.h"
#include <string.h>

int main(int argc, char* argv[])
{
char* buffer;

//then some memory is allocated with:

buffer=(char *)malloc(10);

//then some text is placed here:

strcpy(buffer, "some text");

char c;

for(int i(0);i<10;i++)
{
c=*(buffer+i);//return each character from the buffer

cout<

Re: Retrieve a character from a string

Perspx3-Aug-07 2:36

Perspx

3-Aug-07 2:36

Thank you all for your helpful answers Smile | :)

--PerspX

Dialog box query

dona jain1-Aug-07 23:46

dona jain

1-Aug-07 23:46

i have used a text box in my dialog box in WIN32 programming....now i want that the data entered by user can be copied to a text file on pressing ok. what method can i use for this??

Re: Dialog box query

KarstenK1-Aug-07 23:51

KarstenK

1-Aug-07 23:51

with GetWindowText(...) you can fetch the text and then write it to a file. Sleepy | :zzz:

Greetings from Germany

Re: Dialog box query

Naveen1-Aug-07 23:51

Naveen

1-Aug-07 23:51

GetDlgItemText()?

nave

[OpenedFileFinder]

Re: Dialog box query

CPallini2-Aug-07 0:00

CPallini

2-Aug-07 0:00

To complete your task, have a look also at
CreateFile, WriteFile, CloseHandle WIN32 functions.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: Dialog box query

Christian Graus2-Aug-07 0:14

Christian Graus

2-Aug-07 0:14

I realise he's using Win32 ( I suspect simply because he has the express edition ), but he's not using C. What's wrong with file streams ?

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: Dialog box query

CPallini2-Aug-07 0:25

CPallini

2-Aug-07 0:25

Christian Graus wrote:
What's wrong with file streams ?

Nothing, actually.

On the other hand, plain WIN32 API isn't that bad.

As matter of personal taste, I prefer plain C I/O API (fopen,...) whenever my application is, by design, not OO (for instance, simple test applications).

Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: Dialog box query

Sivaprasad S Nair2-Aug-07 1:40

Sivaprasad S Nair

2-Aug-07 1:40

Use any of the below to retrive text from your edit box

CString strWindowText;
editBoxObject.GetWindowText(strWindowText);

GetDlgItem(ID_OF_THE_EDIT_BOX)->GetWindowText(strWindowText);

then create an CStdiofile object

then the WriteString(strWindowText) function of CStrdiofile to save the text into disk

Rgds

Sivan
http://www.ktsinfotech.com

Re: Dialog box query

Christian Graus2-Aug-07 2:00

Christian Graus

2-Aug-07 2:00

He's using Win32, this is MFC code.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

ActiveX: Transfer between Control and PropertyPage

AnTri1-Aug-07 23:41

AnTri

1-Aug-07 23:41

Hey,

please help me. I've written a ActiveX-Control. How can I transfer data between the control and propertypage. I know the DDP Makro, but with this makro I can only transfer values from controls. I need to transfer "calculated" value. Is there a function to store/transfer data from propertypage to the membervars in the control?

Which Antivirus/Firewall installed?

San24681-Aug-07 23:28

San2468

1-Aug-07 23:28

Hi All,
I want to detect which antivirus and firewall is installed on my computer.
What all I know is WMI can be used, but don't know the Interface or function.
Thanks.

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