C / C++ / MFC

9-Sep-02 5:32

Override CYourDlg::PreTranslateMessage, check if listbox has the focus and key is Enter, then do whatever you want.

Tomasz Sowinski -- http://www.shooltz.com

To some its a six-pack, to me it's a support group

Fixed Length Records

crusherwright9-Sep-02 4:27

9-Sep-02 4:27

Hello

I am trying to create a c++ program thats outputs messages to disk in a fixed lenght format i.e after each record the data needs to be padded to 512 bytes before the next record starts.

The part I have trouble with it the padding of the record to 512 bytes can anyone help or point me in the right direction

Thanks
James Wright

Tomasz Sowinski9-Sep-02 4:32

9-Sep-02 4:32

Copy the message to 512-byte buffer, then write buffer to disk.

Tomasz Sowinski -- http://www.shooltz.com

To some its a six-pack, to me it's a support group

crusherwright9-Sep-02 4:35

9-Sep-02 4:35

Sorry I am a bit of a retard when it comes to programming I only started to learn last week.

what command would I use because I need to pad it with hex code 20

Thanks
James

Tomasz Sowinski9-Sep-02 4:37

9-Sep-02 4:37

What kind of message are you writing? Text messages, binary messages?

Tomasz Sowinski -- http://www.shooltz.com

To some its a six-pack, to me it's a support group

crusherwright9-Sep-02 5:28

9-Sep-02 5:28

text this is what I have so far
stream tmpFile("tmpfile", ios::trunc);
tmpFile << "\x01"<<"{1:F01"<

Tomasz Sowinski9-Sep-02 5:46

9-Sep-02 5:46

using namespace std;
ostringstream os;
os << "\x01"<<"{1:F01"<<senderbic<<"0000000000}{2:I"<<mttype<<receivebic<<"X}{4:";
os << "\x0A"<<"\x3A"<<"20:MT999 TEST "<< loop;
os << "\x0A"<<"\x3A"<<"21:DOS-PCC TEST";
os << "\x0A"<<"\x3A"<<"79:TEXT Field";
os << "\x03";
string padding(512 - os.str().length(), 0x20);
os << padding;
ofstream of("c:\\test.txt", ios::out | ios::app);
of << os.str();

Tomasz Sowinski -- http://www.shooltz.com

To some its a six-pack, to me it's a support group

crusherwright9-Sep-02 5:49

Need Urgent HELP on DAO Jet 4.0 distribution

9-Sep-02 5:49

Thankyou Iam very new to programming but have been searching for ages for this

Thanks

Anonymous9-Sep-02 4:19

Anonymous

9-Sep-02 4:19

Hi,

I have my Visual C++ 6.0 application Trial.exe & MS Acces databse table Trial.mdb

*) These steps I did try at my friend PC (Window 98 & without Jet DAO engine) as
article Q23002 suggested:
http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q233002

1) Run MDAC_TYP.exe
2) Reboot PC
3) Jet40Sp3_Comp.exe
4) Reboot PC
5) Copy my Trial.exe Trial.mdb in c: drive as needed
6) Run Trial.exe & the PC said: "Can not initialize DAO Jet 4.0"

*) However, I did not perform those with Regsvr32 Dao360.dll in c:\Program
Files\Common Files\Microsoft Shared\DAO to become COM.dll ... because I am
not sure how to do it ! I did try do it in DOS environment c:\Windows\System
as Regsvr32 Dao360.dll), but the result is the same in (6)!

*) Do you think I need in DOS environment C:\Program Files\Common
Files\Microsoft Shared\DAO: "Regsvr32 Dao360.dll COM.dll"?

Can anyone help me, I need it for this afternoon!

Many thanks,

NetMessageBufferSend question

Tom Wright9-Sep-02 4:16

9-Sep-02 4:16

I'm having trouble with the LPBYTE param of this API.
I want to move text from my dialog based application to this api to send.

LPTSTR buffer;
m_cSendText.GetWindowText(buffer, 256);

nasStatus = NetMessageBufferSend(NULL,
awcToNameW,
awcFromNameW,
(LPBYTE)buffer,
256);

When I run my program all I get is a string of ?'s. How do I setup the 4th param so that it sends the text properly?

Thanks

Tom Wright
tawright915@yahoo.com

Tom Wright9-Sep-02 4:45

9-Sep-02 4:45

Okay I found that I did not have this set correctly is should be

CString buffer;
m_cSendText.GetWindowText(buffer);

nasStatus = NetMessageBufferSend(NULL,
awcToNameW,
awcFromNameW,
(LPBYTE)&buffer,
m_cSendText.GetWindowTextLength());
But I'm still getting junk in the message box. Any suggestions?

Tom Wright
tawright915@yahoo.com

Stephen C. Steel9-Sep-02 7:32

Stephen C. Steel

9-Sep-02 7:32

The problem is the unecessary & to take the address of the CString object. If you only need read access to the string data in a CString object, you can use the (LPCTSTR) conversion operator to get a pointer to the buffer. Then you'll have to use a cast, because NetMessageBufferSend() expects an LPBYTE rather than an LPCTSTR. That is, change
(LPBYTE)&buffer,
to
(LPBYTE)(LPCTSTR) buffer,

Casting away the constness of the LPCTSTR doesn't matter in this case, since NetMessageBufferSend () is only going to read the buffer.

Stephen C. Steel
Kerr Vayne Systems Ltd.

Tom Wright9-Sep-02 10:37

9-Sep-02 10:37

No this still does not work. I must not be setting something up right.

I have a dialog based app with 2 edit fields on it. And a control variables called:
m_cCompName.
m_cSendText.

LPWSTR awcToNameW;<br />
LPWSTR awcFromNameW;<br />
CString ComputerName;<br />
<br />
awcToNameW = T2W(ComputerName);<br />
awcFromNameW = T2W(ComputerName);<br />
NET_API_STATUS nasStatus;<br />
<br />
nasStatus = NetMessageBufferSend(NULL,<br />
                    awcToNameW,<br />
                    awcFromNameW,<br />
                    (LPBYTE)(LPCTSTR)TextSend,<br />
                    TextSend.GetLength());<br />
<br />

So what am I doing wrong. This should work. Right?

Thanks

Tom Wright
tawright915@yahoo.com

Daniel Lohmann9-Sep-02 12:50

Daniel Lohmann

9-Sep-02 12:50

Usually NetXXX Api never use ANIS strings. Even if not explicitly mentioned in MSDN, I would try to convert the message buffer also to UNICODE.

--

Daniel Lohmann

http://www.losoft.de
(Hey, this page is worth looking! You can find some free and handy NT tools there Big Grin | :-D

)

Tom Wright9-Sep-02 12:55

Memory access at run time

9-Sep-02 12:55

That's what I ended up doing.

Thanks

Tom Wright
tawright915@yahoo.com

SamirSood9-Sep-02 2:40

SamirSood

9-Sep-02 2:40

I want to know whether this is possible to access RAM through VC++? If yes then can i read or write data in RAM?

Please reply soon........

Samir Sood

Vagif Abilov9-Sep-02 2:51

Vagif Abilov

9-Sep-02 2:51

Almost whatever you do in C++, you access RAM Smile | :)

Of course you can only access memory managed by your process, otherwise your program will generate "Access violation" exception.

Vagif Abilov
MCP (Visual C++)
Oslo, Norway

Hex is for sissies. Real men use binary. And the most hardcore types use only zeros - uppercase zeros and lowercase zeros.
Tomasz Sowinski

Pavel Klocek9-Sep-02 2:54

Pavel Klocek

9-Sep-02 2:54

You can access all memory mapped to application address space, randomly mapped to physical RAM by OS. If you need to access a physical RAM, you need to go down to driver level, if it's possible at all.

Pavel
Sonork 100.15206

SamirSood9-Sep-02 3:46

SamirSood

9-Sep-02 3:46

Can u provide me with some api level information for it

Samir Sood