Access non-exposed port. - C / C++ / MFC Discussion Boards

Re: two dialog boxes in single application

CPallini13-Apr-09 9:08

CPallini

13-Apr-09 9:08

See also this article [^].
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.

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

[My articles]

file searcher in vc++ ?

ashish8patil12-Apr-09 23:22

ashish8patil

12-Apr-09 23:22

Hello All ,
I want to write a code which will find(search) (.extension like (*.txt))files in the all system in vc++ .
Please help me

Thank You.

Re: file searcher in vc++ ?

Divyang Mithaiwala12-Apr-09 23:29

Divyang Mithaiwala

12-Apr-09 23:29

This[^] may help to you.

Do not trust a computer...
Always check what computer is doing

regards,
Divyang Mithaiwala
Software Engineer

Re: file searcher in vc++ ?

ashish8patil13-Apr-09 1:20

ashish8patil

13-Apr-09 1:20

thank you.

Re: file searcher in vc++ ?

_AnsHUMAN_ 12-Apr-09 23:44

_AnsHUMAN_

12-Apr-09 23:44

WIN32_FIND_DATA data; FindFirstFile("*.txt", &data); and FindNextFile may help you

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

_AnShUmAn_

Re: file searcher in vc++ ?

ashish8patil13-Apr-09 1:19

ashish8patil

13-Apr-09 1:19

thanks a lot .

Driver problem

trioum12-Apr-09 23:01

trioum

12-Apr-09 23:01

I am facing the following problem frequently when accessing data from Microsoft access

Key violation.

[Microsoft][ODBC Microsoft Access Driver] Could not find installable ISAM.

can any body advice solution

Trioum

Access non-exposed port.

Comp_Users12-Apr-09 22:56

Comp_Users

12-Apr-09 22:56

Hi,

I am working on VS 2005 on Vista platform.

I have an mobile data card which exposes an Modem Port and this port appears as an device entry under "Modems" in the Device Manager.

In addition to this, the device has another port which i figured out by scanning through the registry and this port does not appear in the device manager.
This port appears in the list of available ports displayed by HyperTerminal and also in PortMon and I can connect and talk to the device via HyperTerminal.

But in my application when I try to do an CreateFile with that port name, the call fails with GetLastError() returning 2.

    TCHAR szPortName[MAX_PATH]=_T("");
_tcscpy(szPortName, _T("\\\\.\\"));
_tcscat(szPortName, _T("COM6:");    //assume the non-exposed port is COM6.

HANDLE hDeviceFile = CreateFile(szPortName,
    GENERIC_READ | GENERIC_WRITE,
    0,
    NULL,
    OPEN_EXISTING,
    0,
    NULL);
DWORD dwReturn = GetLastError();

Is there something wrong in the CreateFile() function call above.
Or is it that Vista allows only ports that are expose/displayed in the Device Manager for an Device to be used by an application?

Re: Access non-exposed port.

Comp_Users13-Apr-09 0:25

Comp_Users

13-Apr-09 0:25

Found the problem.
I was specifying Port Name as _T("COM6:") while the correct was is _T("COM6") i.e, without the colon at the end.

How do I get windows password policy?

cozyu12-Apr-09 21:48

cozyu

12-Apr-09 21:48

Hi.
I am making software of windows policy.
So I need to get windows password policy.
(e.g. minimum password age, maximum password age, minimum password length.. etc)
In windows, I can get these information using "net accounts" command.
But how to get these information using c++ function.

I checked "netapi32.dll", I couldn't find any related information.
I need your help.

Answer please..

modified on Monday, April 13, 2009 4:03 AM

Re: How do I get windows password policy?

David Crow13-Apr-09 3:51

David Crow

13-Apr-09 3:51

Member 4672141 wrote:
But how to get these information using c++ function.

You can't. C++ knows nothing of this sort of thing. You'll need to call NetUserModalsGet() to get such information.

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Re: How do I get windows password policy?

cozyu15-Apr-09 16:16

cozyu

15-Apr-09 16:16

Thx!!! It's big help for me.

Any software that gives me source code of a dll

002comp12-Apr-09 21:39

002comp

12-Apr-09 21:39

hello
Do u kow any S/w that provides me the source code of a dll (in win32)?
Thanks

Re: Any software that gives me source code of a dll

_AnsHUMAN_ 12-Apr-09 21:46

_AnsHUMAN_

12-Apr-09 21:46

yogeshs wrote:
Do u kow any S/w that provides me the source code of a dll (in win32)?

NOPE
BTW do you seek information on the exported methods from the dll?

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

_AnShUmAn_

Re: Any software that gives me source code of a dll

Rajesh R Subramanian12-Apr-09 22:28

Rajesh R Subramanian

12-Apr-09 22:28

You could use a decompiler like Reflector[^] if the binary was built with managed code (and wasn't obfuscated[^]).

With a Win32 DLL, well, good luck.

It is a crappy thing, but it's life -^ Carlo Pallini

Re: Any software that gives me source code of a dll

enhzflep13-Apr-09 22:28

enhzflep

13-Apr-09 22:28

Yeah sure, IDA Pro in association with the the Hex-Rays decompiler plugin.

http://www.hex-rays.com/decompiler.shtml[^]

memory leak in Visual C++ 2008(win32 app+DirectX9)

akira3212-Apr-09 21:26

akira32

12-Apr-09 21:26

My project is created in Visual C++ 2008 and use DirectX9.
There are many memory leak in my project after the ending of this program. Is there a artcile about solving the memory leak of Visual C++ 2008 in the Code Project?

Re: memory leak in Visual C++ 2008(win32 app+DirectX9)

Rolf Kristensen13-Apr-09 12:52

Rolf Kristensen

13-Apr-09 12:52

For normal memory leaks caused by new and delete, then Visual Leak Detector - Enhanced Memory Leak Detection for Visual C++[^] have worked very nicely for me.

List Box

MsmVc12-Apr-09 21:07

MsmVc

12-Apr-09 21:07

Hi All
How can i add string in list box fast?I have a file which have 1Lakhs lines.If am adding these line like this

if(file.Open(Name,CFile::modeRead))
{
		
			CString strname;
			while(file.end)
			{
			
				
			
				
				file.ReadString(strname.Trim());
				
				if(strname.IsEmpty())
				{
					
				break;
				}
				
				else
				{
					
					
							m_list.InsertString(i,strname);
				
				}
			
			}	
	
	

				file.Close();	
}

Then Dialog is showing notresponding.Plz help me How can i add fast.

Re: List Box

_AnsHUMAN_ 12-Apr-09 21:29

_AnsHUMAN_

12-Apr-09 21:29

You need to probably restructure your problem. First: Do you really need to display 1 lac lines in the list box...
I don't really think that any user for your application would be really interested in reading or going through that many lines of text at a time.
If not can you use some kind of paging mechanism rather than reading the whole file. Only read the number of records that you can display at a time.

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

_AnShUmAn_

Re: List Box

David Crow13-Apr-09 3:53

David Crow

13-Apr-09 3:53

Put this code into a worker thread[^] so the UI remains responsive.

can anyone explain this piece of code?

Rakesh512-Apr-09 20:40

Rakesh5

12-Apr-09 20:40

this following piece of code is used in win32 programming.
this plays a vital role in servicing the messages.

CODE IS::

while (GetMessage (&msg, NULL, 0, 0)) {
TranslateMessage ( &msg );
DispatchMessage ( &msg );
}

i want to know how is it translating messages actually? (from which format to which format?)

thanks.

rakesh

Re: can anyone explain this piece of code?

Rajesh R Subramanian12-Apr-09 21:01

Rajesh R Subramanian

12-Apr-09 21:01

The code looks self-explanatory, given the docs explain the APIs.

Rakesh5 wrote:
(from which format to which format?)

Virtual-key messages to character messages[^], according to the documentation.

It is a crappy thing, but it's life -^ Carlo Pallini

Re: can anyone explain this piece of code?

_AnsHUMAN_ 12-Apr-09 21:26

_AnsHUMAN_

12-Apr-09 21:26

Rakesh5 wrote:
Re: can anyone explain this piece of code?

yes, A good book - say Charles Petzold

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

_AnShUmAn_

Re: can anyone explain this piece of code?

Emilio Garavaglia13-Apr-09 0:13

Emilio Garavaglia

13-Apr-09 0:13

The role of TranslateMessage is to generate more "high lavel" messages from the "low level" ones that come directly from the input.

The typical case is WM_KEYDOWN/WM_KEYUP that, if observed for certain keys and shifts, generates WM_CHAR and WM_UNICHAR.

All new messages are re-posted on the same message queue, and hence fetched from GetMessage tehmselves.

2 bugs found.
> recompile ...
65534 bugs found.
D'Oh! | :doh:

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