C / C++ / MFC

Re: I get a Windows error when I remove an else statement...

Lord Kixdemp7-Jun-06 18:04

Lord Kixdemp

7-Jun-06 18:04

Hey, thanks you all!
Now, I'm trying to use _splitpath(), since that's... umm... simpler. Look:

_splitpath("C:\\Documents and Settings\\Kixdemp\\Desktop\\Mythax\\screenshot.png", NULL, NULL, newName, NULL);

It crashes after that line. Does newName have to be initialized? Thanks!

PD: Does it have to be a full path? This is a command line app, and the user might just select a file in the program's dir...

Lord Kixdemp
www.SulfurMidis.com
www.SulfurSoft.tk
[ftp://][http://][hotline://]tsfc.ath.cx

Re: I get a Windows error when I remove an else statement...

David Crow8-Jun-06 2:42

David Crow

8-Jun-06 2:42

Kixdemp wrote:
Does newName have to be initialized?

No.

Kixdemp wrote:
Does it have to be a full path?

Yes.

Kixdemp wrote:
the user might just select a file in the program's dir...

Which is probably fine, if all you are interested in is the filename itself sans the path and extension.

"The largest fire starts but with the smallest spark." - David Crow

"Judge not by the eye but by the heart." - Native American Proverb

Re: I get a Windows error when I remove an else statement...

Lord Kixdemp8-Jun-06 3:11

Lord Kixdemp

8-Jun-06 3:11

Nevermind... Sorry for making you all post on this thread, it was useless - _splitpath() is Windows-only, and I need this for Linux and DOS also... Thanks and sorry! Blush | :O

Lord Kixdemp
www.SulfurMidis.com
www.SulfurSoft.tk
[ftp://][http://][hotline://]tsfc.ath.cx

Re: I get a Windows error when I remove an else statement...

David Crow8-Jun-06 3:20

David Crow

8-Jun-06 3:20

That is why I initially did not mention using _splitpath() because you were using MinGW.

If your goal is just to separate a filename from its path and extension, using strrchr() will come in real handy.

"The largest fire starts but with the smallest spark." - David Crow

"Judge not by the eye but by the heart." - Native American Proverb

Socket programming error MFC

Aqueel7-Jun-06 4:14

Aqueel

7-Jun-06 4:14

Hi I am doing network programming in MFC. Problem is that i am trying to send a buffer to server using send(...) function. But there is an error. When i use WSAGetLastError() to check error code, it gives error code 0. Please can anyone tell me where can problem lie.
Thank you

We Believe in Excellence
www.aqueelmirza.cjb.net

Re: Socket programming error MFC

David Crow7-Jun-06 4:20

David Crow

7-Jun-06 4:20

Aqueel wrote:
Problem is that i am trying to send a buffer to server using send(...) function. But there is an error.

And that error would be what?

"The largest fire starts but with the smallest spark." - David Crow

"Judge not by the eye but by the heart." - Native American Proverb

Re: Socket programming error MFC [modified]

Aqueel7-Jun-06 4:32

Aqueel

7-Jun-06 4:32

Yah i just wanted to know that in which scenerio, 0 is returned. what can be problem? I went on msdn. There is a list of error codes. But they are lables not integer values. How can i determine this one.
Thank you

We Believe in Excellence
www.aqueelmirza.cjb.net

-- modified at 10:33 Wednesday 7th June, 2006

Re: Socket programming error MFC [modified]

David Crow7-Jun-06 4:42

David Crow

7-Jun-06 4:42

Aqueel wrote:
There is a list of error codes. But they are lables not integer values. How can i determine this one.

Have you looked in winerror.h?

"The largest fire starts but with the smallest spark." - David Crow

"Judge not by the eye but by the heart." - Native American Proverb

Re: Socket programming error MFC [modified]

Viorel.7-Jun-06 4:55

Viorel.

7-Jun-06 4:55

After you obtained the error code with "DWORD error = WSAGetLastError();" and stopped the program at a breakpoint, you can see a textual description of the error by adding the following value to Watch panel or QuickWatch window: "error,hr".

Re: Socket programming error MFC [modified]

Aqueel7-Jun-06 5:10

Aqueel

7-Jun-06 5:10

Sorry i debugged it and saw that error code is 183. What is that?

We Believe in Excellence
www.aqueelmirza.cjb.net

Re: Socket programming error MFC [modified]

Viorel.7-Jun-06 5:21

Viorel.

7-Jun-06 5:21

In Winerror.h file, 183 is the code of ERROR_ALREADY_EXISTS error: "Cannot create a file when that file already exists".

Perhaps you are trying to open a socket on already used port? Or may be you are performing some invalid file operations.

Re: Socket programming error MFC

Sarath C7-Jun-06 4:38

Sarath C

7-Jun-06 4:38

if it is a network related error u will definitely get the error code.
check your code first. i think there should have some problems with your code. r u using multiple threads?
CSocket is designed to serve for per thread basis.

if u r creating a sample application. follow the steps provided in MSDN. for the basic implementation, u can try with the sample code provided in MSDN

Sa^Rath.

"Don't Do Different things... Do Things Differently..."

Understanding State Pattern in C++

need to write a panel(a custom control) to load and unload controls?

old_dustman7-Jun-06 4:11

old_dustman

7-Jun-06 4:11

may the panel be a dialog?
could you interpret your method or offer the source code?
thank you very much.

kudoo

Re: need to write a panel(a custom control) to load and unload controls?

David Crow7-Jun-06 4:22

David Crow

7-Jun-06 4:22

old_dustman wrote:
could you interpret your method or offer the source code?

Not without a better understanding of what you are after. What is meant by "load and unload controls?"

"The largest fire starts but with the smallest spark." - David Crow

"Judge not by the eye but by the heart." - Native American Proverb

Re: need to write a panel(a custom control) to load and unload controls?

Jun Du7-Jun-06 5:25

Jun Du

7-Jun-06 5:25

What do you mean by "the panel"? A window with no frame? An instrumental guage/meter in the aircraft cockpit? A dashboard in the car?

- It's easier to make than to correct a mistake.

Re: need to write a panel(a custom control) to load and unload controls?

old_dustman7-Jun-06 17:11

old_dustman

7-Jun-06 17:11

a control container

Retrieving Machine ID

SachinBhave7-Jun-06 3:34

SachinBhave

7-Jun-06 3:34

Hi All,

I have a requirement, where I need to get the following information.

1. MAC Address.
2. HDD Serial Number
3. CD/DVD Drive Serial Number.
4. CPU Processor ID.

I have my application in VC++ using MFC.

Any help will be highly appreciated.

Thanks,
Sachin.

Re: Retrieving Machine ID

_AnsHUMAN_ 7-Jun-06 3:42

_AnsHUMAN_

7-Jun-06 3:42

GetVolumeInformation() will do more than half the work.

For MAC Address - (this is only my opinion)
one thing that would work all the time is run a shell
"arp -a" and internally search the output for the needed MAC.

The other thing you can do is WMI(Read it somewhere don't know how it's done)

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

_AnShUmAn_

Re: Retrieving Machine ID

David Crow7-Jun-06 4:15

David Crow

7-Jun-06 4:15

_AnShUmAn_ wrote:
GetVolumeInformation() will do more than half the work.

How so? While it may be used to get the serial number of the hard drive or the CD drive, how do you propose it getting the MAC address or the CPU id?

_AnShUmAn_ wrote:
For MAC Address - (this is only my opinion)
one thing that would work all the time is run a shell
"arp -a" and internally search the output for the needed MAC.

Even though APIs exist for obtaining MAC addresses, capturing the output or arp -a is not going to work. You should use ipconfig /all instead.

"The largest fire starts but with the smallest spark." - David Crow

"Judge not by the eye but by the heart." - Native American Proverb

Re: Retrieving Machine ID

Viorel.7-Jun-06 3:54

Viorel.

7-Jun-06 3:54

Perhaps you will found methods based on querying the System Registry. Nevertheless, consider that the data you need can be obtained using Windows Management Instrumentation (WMI):

MAC Address -- see Win32_NetworkAdapter WMI class;
HDD Serial Number -- see Win32_DiskDrive WMI class;
CD/DVD Drive Serial Number -- see Win32_CDROMDrive WMI class;
CPU Processor ID -- see Win32_Processor WMI class.

WMI seems to be difficult to use in C++. So use it if no easier equivalent methods.

Plz Advice

Krishnatv7-Jun-06 3:11

Krishnatv

7-Jun-06 3:11

HI,

I want to be a good Programmer in VC++ and COM Technologies.

I have just done MY Masters in Computer Applications.

I know a little C, C++ (not so deep). I have really passion on VC++.

To know VC++ very well , Do i need to learn from microprocessors,

Computer Atchitecture(memory models) , operating systems and then C++ ?

what should i Do ?

please give me advice.

Re: Plz Advice

_AnsHUMAN_ 7-Jun-06 3:27

_AnsHUMAN_

7-Jun-06 3:27

Nothing else would be better than starting with WIN32 (SDK)
Move on to learn MFC after that .
COM ant ATL come last.
The knowledge of microprocessors and computer architecture would be handy but if you are willing to work on MFC its of lesser use.

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

_AnShUmAn_

Re: Plz Advice

Krishnatv7-Jun-06 19:35

Krishnatv

7-Jun-06 19:35

Thank you AnshuMan.

Re: Plz Advice

ThatsAlok7-Jun-06 20:10

ThatsAlok

7-Jun-06 20:10

Krishnatv wrote:
HI,

I want to be a good Programmer in VC++ and COM Technologies.

I have just done MY Masters in Computer Applications.

I know a little C, C++ (not so deep). I have really passion on VC++.

To know VC++ very well , Do i need to learn from microprocessors,

Computer Atchitecture(memory models) , operating systems and then C++ ?

more knowledge will help you program better.. i.e. Consider Operating System you must have heard about Round Robin scheduling and reader writer problem.. thats problem are common in programmign world..

so it better you have overview of every thing!

"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

Blitting a palettized surface to a none palettized surface

Remco Hoogenboezem7-Jun-06 3:09

Remco Hoogenboezem

7-Jun-06 3:09

I have created a palettized (256 color entries) directdraw off-screen surface. And a none palettized directdraw primary surface.
I would like to blit the palettized surface to the none palettized surface while maintaining the color information present in the palettized surface.
The cooperation level is set to DDSCL_NORMAL. I have attached a clipper to the primary surface and I have attached a palette to the off-screen surface. This construction does not work! And the directdraw documentation gives me the awnser why not:

"It is important to note that DirectDraw blits never perform color conversion; any palettes attached to the source or destination surface of a blit are ignored"

Is their any solution to this problem without having to do the color conversion yourself? It would be a lot less complicated!!

Thanks Cool | :cool:

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