C / C++ / MFC Discussion Boards

Re: How to convert CString to char*.

Hamid_RT22-Jan-07 19:55

Hamid_RT

22-Jan-07 19:55

And then use of ReleaseBuffer() Wink | ;)

WhiteSky

Re: How to convert CString to char*.

toxcct22-Jan-07 22:55

toxcct

22-Jan-07 22:55

GetBuffer a pointer to the internal CString buffer. it is not a good idea to get this modifiable buffer only if a conversion to char* is needed.
there are cast operators for that : (LPCTSTR) for instance.

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[VisualCalc 3.0][Flags Beginner's Guide]

Re: How to convert CString to char*.

Mark Salsbery23-Jan-07 8:56

Mark Salsbery

23-Jan-07 8:56

AHHHH *scream* Stop using GetBuffer!!! Laugh | :laugh:

CString is such a nice encapsulation of char data. GetBuffer is rarely needed. There's
plenty of methods and operators to manipulate the string.

Mark

Re: How to convert CString to char*.

eli1502197922-Jan-07 22:34

eli15021979

22-Jan-07 22:34

Hi ,

Try this :

CString str = "this is a test";
char* pchar = new char[str.GetLength() + 1];

memcpy(pchar , (LPCTSTR)str , str.GetLength() + 1);

Eli

Re: How to convert CString to char*.

toxcct22-Jan-07 22:59

toxcct

22-Jan-07 22:59

eli15021979 wrote:

CString str = "this is a test";
char* pchar = new char[str.GetLength() + 1];
memcpy(pchar , (LPCTSTR)str , str.GetLength() + 1);

don't mix ansi, unicode and "T" strings...
i suggest this instead :

CString str = _T("this is a test");
TCHAR* pchar = new <code>TCHAR</code>[str.GetLength() + 1];
memcpy(pchar , (LPCTSTR)str , str.GetLength() + 1);

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Re: How to convert CString to char*.

san123pune22-Jan-07 22:57

san123pune

22-Jan-07 22:57

CString str = "this is a test";
char* pchar = new char[str.GetLength() + 1];

//then ....

strcpy(pchar, str.GetBuffer());
str.ReleaseBuffer();

It will copy the content from string to char *

Re: How to convert CString to char*.

toxcct22-Jan-07 23:01

toxcct

22-Jan-07 23:01

nooo, don't use GetBuffer() when only a Cast operator does the job. read my previous answer[^].

use GetBuffer() if you need to modify the CString buffer internally

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Refer the Forums Guidelines and ask a friend

[VisualCalc 3.0][Flags Beginner's Guide]

Re: How to convert CString to char*.

#realJSOP23-Jan-07 1:55

#realJSOP

23-Jan-07 1:55

strcpy(pchar, (LPCTSTR)str);
strcpy(pchar, (const char*)str);
strcpy_s(pchar, str.GetLength()+1, (LPCTSTR)str);
strcpy_s(pchar, str.GetLength()+1, (const char*)str);

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Re: How to convert CString to char*.

Hamid_RT23-Jan-07 7:50

Hamid_RT

23-Jan-07 7:50

If you want to use GetBuffer then you need to call ReleaseBuffer

WhiteSky

Re: How to convert CString to char*.

Mark Salsbery23-Jan-07 8:58

Mark Salsbery

23-Jan-07 8:58

WhiteSky wrote:
If you want to use GetBuffer then you need to call ReleaseBuffer

Only if you change the contents, right?

Re: How to convert CString to char*.

Mark Salsbery23-Jan-07 9:02

Mark Salsbery

23-Jan-07 9:02

a CString in unicode builds is a wchar_t array, not a char.

If you want to store chars in a CString in a unicode build then use the specific CStringA type.

If you want to use the generic CString, you'll need to convert the unicode CString to a char
type (using the WideCharToMultiByte() or similar).

Mark

Socket Communication

Focus KWON22-Jan-07 19:11

Focus KWON

22-Jan-07 19:11

Now, I code a program that manage PCs by using TCP with CSocket class.

However when I check on console by shell command,

"netstat -na"

I can see the server and client is connected like as,

163.152.216.228:9000 163.152.216.70:1234 ESTABLISHED
163.152.216.70:1234 163.152.216.228:9000 ESTABLISHED

But, when I send a message on the server or the client,

the two do not get a message. Also, don't occure the OnReceive() events.

So, I tried it on debugging mode and checked that

the "Send" Function had the correct values and run exactly.

What is the problem ?

How can I solve it ?

Please, help me~

Always beside you,
Focused on Focus KWON

Re: Socket Communication

dharani22-Jan-07 19:33

dharani

22-Jan-07 19:33

Hi
You mean to say you have written your server and client from derived class of CSOcket rgt ?
If so can you give me more details ?
Is your server dialog based or console application ?
If its a dialog based one then OnReceive() will run - no problem
If its a console aplication then OnReceive() will not receive from client because you need to TranslateMessage() and PeekMessage() which you can do by using a hidden CFrameWnd class .This is a known problem because in a console app the message handlers are not active by default .

So usually , most servers are written with Win32 socket APIs . Its not advisable to use CSocket for a server - but client is ok

redindian

Re: Socket Communication

S Douglas23-Jan-07 0:50

S Douglas

23-Jan-07 0:50

Focus KWON wrote:
How can I solve it ?

This library makes sending recieving a breaze. Network Development Kit 2.0[^]

I'd love to help, but unfortunatley I have prior commitments monitoring the length of my grass. :Andrew Bleakley:

How to use LoadStringResource in DLL ?

Atul2322-Jan-07 19:08

Atul23

22-Jan-07 19:08

Hi
All
I want to use LoadStringResource() function in DLL. When i used this function in DLL code there is error as undeclare indentifier. Is there need to include any .H file to use it.plz send me info abt how to use LoadStringResource function.

Thnaks
Atool

M.Atul

Re: How to use LoadStringResource in DLL ?

Michael Dunn23-Jan-07 8:15

Michael Dunn

23-Jan-07 8:15

The API is called LoadString()

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Visual C++ MVP Cool | :cool:

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Hard Disk Health

kasturi_haribabu22-Jan-07 18:53

kasturi_haribabu

22-Jan-07 18:53

Can any one guide me how do I monitor / check the health of a hard disk ?

I have gone through the msdn but I could not find in MSDN. My program is targettd to run on windows XP pro/2000 pro.

I found VDS interfaces for this functionality but they are only supported by Windows Vista.

can you please help me on this?

haribabu

Re: Hard Disk Health

ThatsAlok22-Jan-07 19:10

ThatsAlok

22-Jan-07 19:10

kasturi_haribabu wrote:
I have gone through the msdn but I could not find in MSDN. My program is targettd to run on windows XP pro/2000 pro.

look for WMI classes.. they have treasure hidden under them for this type of stuff

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Re: Hard Disk Health

Hamid_RT22-Jan-07 19:38

Hamid_RT

22-Jan-07 19:38

See here[^] if its helpfuls?

WhiteSky

Embedding an application in an application

TPN22-Jan-07 18:48

TPN

22-Jan-07 18:48

Hi everyone,

There is a need of embedding an application in an application, is there anyway? I mean I write an application and then I call CreateProcess to start a new application, all that I need is the new application will run in the window of my application. Confused | :confused:

Thanks in advance.

Re: Embedding an application in an application

ThatsAlok22-Jan-07 19:09

ThatsAlok

22-Jan-07 19:09

TPN wrote:
There is a need of embedding an application in an application, is there anyway? I mean I write an application and then I call CreateProcess to start a new application, all that I need is the new application will run in the window of my application.

look some thing like containers.. read more about COM servers and DLLS

"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

Re: Embedding an application in an application

TPN22-Jan-07 19:15

TPN

22-Jan-07 19:15

Thanks for your reply.

I would like to clarify that the first application is mine and I write it but the second application that I need to call is not mine, it is any other existing application...

Finding the Connection speed ........

junkMind22-Jan-07 17:11

junkMind

22-Jan-07 17:11

Can anyone help me in finding out the speed (kbps ) of the connection .
I need to calculate the time required for an upload depending on file size and the network speed . I am unable to find any documentation on it . Cry | :((

Is anyone aware of how to get this speed programmatically in VC++ ?

Thanks In Advance

--Vijayeta

Re: Finding the Connection speed ........

ThatsAlok22-Jan-07 18:43

ThatsAlok

22-Jan-07 18:43

vijayeta wrote:
Is anyone aware of how to get this speed programmatically in VC++ ?

try IPhelper Apis

"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

Re: Finding the Connection speed ........

ThatsAlok22-Jan-07 18:44

ThatsAlok

22-Jan-07 18:44

vijayeta wrote:
Is anyone aware of how to get this speed programmatically in VC++ ?

look here for more http://www.codeproject.com/internet/IPHelper.asp

"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

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