C / C++ / MFC Discussion Boards

celllllllll18-Jan-06 6:50

18-Jan-06 6:50

Hi,

I am trying to remotely debug a dll. I don't know how to set the project settings and how to set the debug combo box.

My executable on host machine is a exe file and the one on the target is a dll.

Please help to how to fix that.

Thanks in advance

Re: Help me with remote dubugging of a dll

John M. Drescher18-Jan-06 7:57

John M. Drescher

18-Jan-06 7:57

Preeti9 wrote:
My executable on host machine is a exe file and the one on the target is a dll.

Why is the executable on the target different than the source? To do remote debugging you usually map a network drive and load your project in vc on your development machine on the network drive and configure it to execute your program on the same network folder/drive letter on the remote machine.

John

TCP and UDP

Mohammad A Gdeisat18-Jan-06 6:30

Mohammad A Gdeisat

18-Jan-06 6:30

Hi all,
Can a UDP Socket send/receive data from TCP Socket?

Actually I want to make an HTTP program that sends requests to the server, but my program design attracts me towrads UDP sockets, but HTTP is TCP based. Any solution?

Another Question:
If I create a TCP Socket, Can I use Raw sockets to hide my IP address, can I manage the TCP Data/header?

I want to send TCP data anonymously.
Any help is appreciated

Regards

And ever has it been that love knows not its own depth until the hour of separation

glutDestroyWindow (OpenGL)

barakman18-Jan-06 6:18

barakman

18-Jan-06 6:18

Hi.
For anyone that is fimilar with the GLUT library:
If I create a window using glutCreateWindow, and later close it (using the 'X' at the corner of the window), do I have to explicitly call glutDestroyWindow with the window's ID number (or is that function called automatically)?
Thank you.

Listening to pipes

Raylan18-Jan-06 6:07

Raylan

18-Jan-06 6:07

I have just started to use named pipes for communication between programs and i was wondering if there is a method or tool available for viewing the data that is passing through them without having to actually create another program to connect between them? Something like an IP packet sniffer/capture program or a method to create one?

Thanks.

Repositioning a cursor in a control

Tombo18-Jan-06 5:17

Tombo

18-Jan-06 5:17

I'm changing the text in a control and I want to reposition the cursor at the end of the text after I display the text. What I'm doing doesn't work! The cursor is always set to the beginging of the text (due to the "SetFocus"). Any ideas?

NB: m_CheckNoCtrl is a control to the field!

m_CheckNoCtrl.SetWindowText(szTemp); // Paint new text in control
m_CheckNoCtrl.SetFocus(); // Set focus to control
int ndx = m_CheckNo.GetLength(); // Get the new length
SendMessage (EM_SETSEL, (WPARAM)ndx, (LPARAM)ndx);

Re: Repositioning a cursor in a control

FarPointer18-Jan-06 5:49

FarPointer

18-Jan-06 5:49

Hi,
for me it works

CString sJaya("HELLOPSODPO");
c_numedit.SetWindowText(sJaya); // Paint new text in control
c_numedit.SetFocus(); // Set focus to control
int ndx = sJaya.GetLength ();
c_numedit.SendMessage (EM_SETSEL, (WPARAM)ndx, (LPARAM)ndx);
And i see that you are setting with one text and doing a getLength() on another wats that for .

Regards,
FarPointer

-- modified at 11:50 Wednesday 18th January, 2006

Re: Repositioning a cursor in a control

Tombo18-Jan-06 6:17

Tombo

18-Jan-06 6:17

The GetLength()is on the variable I set up for the text.
However you solve my problem!
I changed the SendMessage (EM_SETSEL, (WPARAM)ndx, (LPARAM)ndx);
To: m_CheckNoCtrl.SendMessage (EM_SETSEL, (WPARAM)ndx, (LPARAM)ndx);

I overlooked specifing the control I was sending the message for!
It now works for me too.

Thanks!!!

Smile | :)

Can't update text file

BuckBrown18-Jan-06 5:14

BuckBrown

18-Jan-06 5:14

This should be a no brainer. I am using Visual C++ 6.0. Because I want to use fseek() I declare a file of FILE* filename and then use filename = fopen(path, "r+"). I can read from the file but when I try to write (using fprintf() and fwrite()) to the file nothing changes in the file I am reading from and trying to write to. I have also tried "rt+". I receive no errors. Is there something basic I'm not aware of?

Buck

Re: Can't update text file

Tombo18-Jan-06 5:26

Tombo

18-Jan-06 5:26

See if this helps!
When the "r+", "w+", or "a+" access type is specified, both reading and writing are allowed (the file is said to be open for “update”). However, when you switch between reading and writing, there must be an intervening fflush, fsetpos, fseek, or rewind operation. The current position can be specified for the fsetpos or fseek operation, if desired.

Re: Can't update text file

_psh_18-Jan-06 5:27

_psh_

18-Jan-06 5:27

Hi,

According to the MSDN library at

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_crt_fopen.2c_._wfopen.asp

they say

"When the "r+", "w+", or "a+" access type is specified, both reading and writing are allowed (the file is said to be open for "update"). However, when you switch between reading and writing, there must be an intervening fflush, fsetpos, fseek, or rewind operation. The current position can be specified for the fsetpos or fseek operation, if desired."

So it looks like you will have to reset the open file pointer to the appropriate position before switching between reading and writing operations. If possible, it may be more convenient for you to read and write using separate sessions.

Hope this helps.

Paul

How to store login/password in Windows Registry?

Priya..k18-Jan-06 4:00

Priya..k

18-Jan-06 4:00

The executable has been developed in Borland C++ 6.0. I need to store the user login and password in windows registry, so that each time the user doesn't have to type in his username and password when he runs the exe.

Many Thanks,
Priya

Re: How to store login/password in Windows Registry?

David Crow18-Jan-06 4:04

David Crow

18-Jan-06 4:04

See here.

"The words of God are not like the oak leaf which dies and falls to the earth, but like the pine tree which stays green forever." - Native American Proverb

Re: How to store login/password in Windows Registry?

Nish Nishant18-Jan-06 4:41

Nish Nishant

18-Jan-06 4:41

You better encrypt the password before storing it there.

Regards,
Nish

My blog : Nish’s thoughts on MFC, C++/CLI and .NET

Re: How to store login/password in Windows Registry?

James R. Twine18-Jan-06 6:34

James R. Twine

18-Jan-06 6:34

Or maybe use a one-way hash on it? Might be a little more secure...

Peace!

-=- James

If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Tip for new SUV drivers: Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
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Re: How to store login/password in Windows Registry?

ThatsAlok19-Jan-06 0:29

ThatsAlok

19-Jan-06 0:29

Priya..k wrote:
need to store the user login and password in windows registry, so that each time the user doesn't have to type in his username and password when he runs the exe

Try CRegKey class.. and For Storing UserName and Password you can use widly available RC4 algorithm

"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

How do I display text orientated 90 degrees

britboyjohnson18-Jan-06 2:49

britboyjohnson

18-Jan-06 2:49

How do I display text orientated 90 degrees, ie so that it reads up the screen and you turn you head 90 degrees to read it.
TIA

Re: How do I display text orientated 90 degrees

David Crow18-Jan-06 2:58

David Crow

18-Jan-06 2:58

britboyjohnson wrote:

How do I display text orientated 90 degrees, ie so that it reads up the screen...

I think it may have to do with the font. Does this help? Also, check out the lfOrientation member of LOGFONT.

britboyjohnson wrote:
...you turn you head 90 degrees to read it.

Is this possible? I'm thinking that if my head were turned 90 degrees in relation to my neck, reading would be the farthest thing from my mind! Wink | ;)

"The words of God are not like the oak leaf which dies and falls to the earth, but like the pine tree which stays green forever." - Native American Proverb

Re: How do I display text orientated 90 degrees

basementman18-Jan-06 4:23

basementman

18-Jan-06 4:23

You need to set the lfEscapement member of a LOGFONT and select that font. I am posting an example of this in this code set here[^].

onwards and upwards...

Re: How do I display text orientated 90 degrees

FarPointer18-Jan-06 6:17

FarPointer

18-Jan-06 6:17

Hi ,
Try this one out ,the 900 is specified because its in .1 degree ,
ie 900 * .1 = 90 degree

CPaintDC dc(this); // device context for painting<br />
CFont font;<br />
VERIFY(font.CreateFont(<br />
   12,                        // nHeight<br />
   0,                         // nWidth<br />
   900,                         // nEscapement<br />
   0,                         // nOrientation<br />
   FW_NORMAL,                 // nWeight<br />
   FALSE,                     // bItalic<br />
   FALSE,                     // bUnderline<br />
   0,                         // cStrikeOut<br />
   ANSI_CHARSET,              // nCharSet<br />
   OUT_DEFAULT_PRECIS,        // nOutPrecision<br />
   CLIP_DEFAULT_PRECIS,       // nClipPrecision<br />
   DEFAULT_QUALITY,           // nQuality<br />
   DEFAULT_PITCH | FF_SWISS,  // nPitchAndFamily<br />
   _T("Arial")));                 // lpszFacename<br />
<br />
<br />
 <br />
CFont* def_font = dc.SelectObject(&font);<br />
dc.ExtTextOut(50, 50, ETO_OPAQUE, NULL, _T("Hello"), NULL);<br />
dc.SelectObject(def_font);

Regards,
FarPointer

Re: How do I display text orientated 90 degrees

britboyjohnson18-Jan-06 11:45

britboyjohnson

18-Jan-06 11:45

Thanks for each of the replies Smile | :)

Re: How do I display text orientated 90 degrees

Stephen Hewitt18-Jan-06 15:17

Stephen Hewitt

18-Jan-06 15:17

Using SetWorldTransform you can have text at any angle. For example:

CPaintDC dc(this); // device context for painting<br />
int OldMode = SetGraphicsMode(dc.m_hDC, GM_ADVANCED);<br />
const double Pi = 4*atan(1); // Gives us pi.<br />
const double Angle = 45 * (Pi/180); // 45 degrees in radians.<br />
float CosAngle = float(cos(Angle));<br />
float SinAngle = float(sin(Angle));<br />
XFORM xForm = {CosAngle, SinAngle, -SinAngle, CosAngle, 0, 0};<br />
SetWorldTransform(dc.m_hDC, &xForm);<br />
dc.TextOut(0, 0, _T("This text is at 45 degrees."));<br />
SetGraphicsMode(dc.m_hDC, OldMode);

This technique doesn't work on 95/98/Me however.

Steve

-- modified at 0:51 Thursday 19th January, 2006
ADDED:
SetWorldTransform doesn't just work for text - It will work for any HDC drawing operations.

Problem in finding default browser

Aryan S18-Jan-06 2:43

Aryan S

18-Jan-06 2:43

I want to find the default browser from registry through MFC prog. Plz tell me in which field of the registry i can get the information about default browser.

Re: Problem in finding default browser

David Crow18-Jan-06 2:46

David Crow

18-Jan-06 2:46

Why not just use FindExecutable()?

"The words of God are not like the oak leaf which dies and falls to the earth, but like the pine tree which stays green forever." - Native American Proverb

Re: Problem in finding default browser

ThatsAlok18-Jan-06 19:50

ThatsAlok

18-Jan-06 19:50

Aryan S wrote:
Plz tell me in which field of the registry i can get the information about default browser.

HKEY_CLASSES_ROOT\HTTP\shell\open\command

"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

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