C / C++ / MFC

Is there any API to get connected to DHCP.

15-Jul-08 20:56

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.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

an8915-Jul-08 0:57

an89

15-Jul-08 0:57

I have to enable DHCP using win32API i.e. I have to get connected to it,then obtain IP address and then get release from DHCP.does anyone know how to accomplish this in vc++.

Re: Is there any API to get connected to DHCP.

ThatsAlok15-Jul-08 3:18

ThatsAlok

15-Jul-08 3:18

please see, if this is of any help :-
http://www.codeproject.com/info/search.aspx?artkw=DHCP+&sbo=kw[^]

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
Never mind - my own stupidity is the source of every "problem" - Mixture

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You/xml>

Re: Is there any API to get connected to DHCP.

Mark Salsbery15-Jul-08 6:05

Mark Salsbery

15-Jul-08 6:05

The DHCP API[^] may help.

The IP Helper API[^] has some functions that use DHCP

You can always use the protocol[^] directly through sockets.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

_countof undeclared identifier, tell me why?

fantasy121515-Jul-08 0:53

15-Jul-08 0:53

I use _countof, but could pass the compilation.
And I search the MSDN, found just included in the <stdlib.h>, and I #include <stdlib.h>,
but still could not pass the compilation, please unlock my mind!
Many thanks.

Rajesh R Subramanian15-Jul-08 1:00

Rajesh R Subramanian

15-Jul-08 1:00

Can you show us your code?

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.

Microsoft MVP - Visual C++[^]

CPallini15-Jul-08 1:01

15-Jul-08 1:01

What header file did you include?
Could you please post your code?
Does your system satisfy the requirements stated by the documentation?

_AnsHUMAN_ 15-Jul-08 1:34

_AnsHUMAN_

15-Jul-08 1:34

BTW which version of VS/.NET framework do you use. AFAIK this function is available in VS2005/.NET framework (2.0) and above

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Rajesh R Subramanian15-Jul-08 2:09

Rajesh R Subramanian

15-Jul-08 2:09

_AnShUmAn_ wrote:
BTW which version of VS/.NET framework do you use. AFAIK this function is available in VS2005/.NET framework (2.0) and above

.NET framework has nothing to do with this issue.

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.

Microsoft MVP - Visual C++[^]

Juery Lee26-Jul-12 23:45

Juery Lee

26-Jul-12 23:45

I have encountered the same problem like yours and the IDE is visual C++ 6.0 , the system is sp3

David Crow15-Jul-08 3:08

15-Jul-08 3:08

Are you sure it's not something simple like:

#define _countof(arr) (sizeof(arr)/sizeof(arr[0]))

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

fantasy121515-Jul-08 14:20

15-Jul-08 14:20

Sorry for not telling clearly what platform I'm using!
I use VC6.0 and xp sp2,
I don't know why _countof undeclared. I substitude the code '_countof' using (sizeof(arr)/sizeof(arr[0])).
But I still want to know why _countof not working?

David Crow15-Jul-08 16:57

15-Jul-08 16:57

fantasy1215 wrote:
...not working?

Which means what exactly?

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

fantasy121515-Jul-08 17:19

15-Jul-08 17:19

_countof not working.
In all the places using _countof, I substitute as sizeof(arr)/sizeof(arr[0]).
sizeof(arr)/sizeof(arr[0]) of course works.^_^

David Crow15-Jul-08 17:23

15-Jul-08 17:23

fantasy1215 wrote:
_countof not working.

Are you going to show how you are using it?

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Rajesh R Subramanian15-Jul-08 20:42

Rajesh R Subramanian

15-Jul-08 20:42

DavidCrow wrote:
Are you going to show how you are using it?

What happened to your telescope and CPMRU? Poke tongue | ;-P

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.

Microsoft MVP - Visual C++[^]

fantasy121515-Jul-08 20:51

15-Jul-08 20:51

TCHAR szstrFileBuf[MAX_PATH + 1024] = {0};
TCHAR szstrFileNameBuf[280] = {0};
OPENFILENAME openfn;
::ZeroMemory(&openfn, sizeof(openfn));
openfn.lStructSize = sizeof(openfn);
openfn.hwndOwner = this->GetSafeHwnd();
openfn.lpstrFilter = _T("win files(*.win)\0*.win\0all files\0*.*\0\0");
openfn.nFilterIndex = 1;
openfn.lpstrFile = szstrFileBuf;
openfn.nMaxFile = _countof(szstrFileBuf); //undeclared identify
//openfn.nMaxFile = sizeof(szstrFileBuf) / sizeof(szstrFileBuf[0]); //instead i use this
openfn.lpstrFileTitle = szstrFileNameBuf;
openfn.nMaxFileTitle = 270;

David Crow16-Jul-08 18:21

16-Jul-08 18:21

fantasy1215 wrote:
openfn.nMaxFile = _countof(szstrFileBuf); //undeclared identify

Did you define it like I suggested?

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

ytaitan27-Oct-09 20:18

ytaitan

27-Oct-09 20:18

install vc6+sp5
http://download.microsoft.com/download/vstudio60ent/SP5/Wideband-Full/WIN98Me/CN/vs6sp5.exe[^]

couldn't debug?

gentleguy15-Jul-08 0:23

gentleguy

15-Jul-08 0:23

dear all

my question is after i debug, pc showed me: one or more breakpoints can't be set and have been disabled.execution will be stopped at the beginning of the program. how can i solve this problem. thanks a lot.

gentleguy

CPallini15-Jul-08 0:34

15-Jul-08 0:34

Either you're trying to debug the release build of your project or your browsing information is outdated.
Smile | :)

gentleguy15-Jul-08 0:44

gentleguy

15-Jul-08 0:44

thanks, i used release already.do you have another idea, thanks a lot

gentleguy

CPallini15-Jul-08 0:58

15-Jul-08 0:58

Well, standard settings for the release build prevent the user of breakpoints.

Why don't you use breakpoints with the debug build of your project?
Smile | :)