C / C++ / MFC Discussion Boards

Christian Graus11-Nov-04 8:51

11-Nov-04 8:51

Wow - there's a fair bit there that I never learned. You need to know all of this ?

Christian

I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer

Re: Visual C++ test

Steve S11-Nov-04 0:46

Steve S

11-Nov-04 0:46

Can I quote that? It applies to so many things in life... Smile | :)

Steve S
Developer for hire

GUI design bug

MDowning10-Nov-04 11:42

MDowning

10-Nov-04 11:42

I've been building a GUI for an embedded meter test environment. Its getting very crowded, when all of the sudden
I can't create buttons or fields from the tool bar. I also can't create them by copy and paste. I have to go in and modify the source to create the objects. Anyone seen this.

Re: GUI design bug

Graham Bradshaw10-Nov-04 12:06

Graham Bradshaw

10-Nov-04 12:06

It's a Visual Studio limitation D'Oh! | :doh:

- you can have up to 256 controls on the dialog, and then you can't add any more.

[That must be one very complicated GUI] Poke tongue | ;-P

RGB values without using GetPixel and SetPixel

TITOWBASS10-Nov-04 11:04

TITOWBASS

10-Nov-04 11:04

Hi
I have create program for some operation's on bitmap ,but when using GetPixel And SetPixel program apprare slow.
then i need some help for Retrive RGV valuse without GetPixel and SetPixel.

Thanx to you.

adnan

Re: RGB values without using GetPixel and SetPixel

Christian Graus10-Nov-04 11:23

Christian Graus

10-Nov-04 11:23

You need to load your image into a DIBSection. There are DIBSection wrappers here on CP.

Christian

I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer

Importing DIalogs

Nitron10-Nov-04 10:48

Nitron

10-Nov-04 10:48

Anyone know of an easy way to take a dialog resource from a VS6 project and import it into a VS7.1 project? I _really_ don't feel like doing it the hard way (as in re-creating everything)...

~Nitron.

ññòòïðïðB A start

Re: Importing DIalogs

Yulianto.10-Nov-04 16:10

Yulianto.

10-Nov-04 16:10

I have almost the same problem. I think there isn`t a way, have to do it manually Frown | :(

<italic>Work hard and a bit of luck is the key to success.

You don`t need to be genius, to be rich.

Re: Importing DIalogs

BlackDice11-Nov-04 4:00

BlackDice

11-Nov-04 4:00

Open the .dsw file from VS .NET. Make sure this is a copy, because it will change everything. It will convert your whole project for you. Then you can remove or add anything you want.

If I write code in my sleep, does that make me brilliant, or just a lazy programmer?

My articles

www.stillwaterexpress.com

BlackDice - the programmer formerly known as bdiamond

Sample of ReadFileEx

Howard789010-Nov-04 10:43

Howard7890

10-Nov-04 10:43

I am new to C++ and I am trying to use ReadFileEx.
I would like to put it in a loop and be able to perform other operations.
I have looked at the MSDN, but I would like to see a sample.
Thanks,

Hooking - Client - Server Application Suggestion?

JohnnyG10-Nov-04 9:18

JohnnyG

10-Nov-04 9:18

I've got a friend who I work with who asked me to program an application for his wife who is a teacher. The problem? She teaches a computer course and when she is talking or teaching, the kids are ignoring her and playing on the computer.

She'd like to have an application on her desktop computer that remotely locks/unlocks the keyboard and mouse of all of her students' computers. Of course when the students' computers are locked, a message should be displayed as they type (pound?) on the keyboard or move the mouse.

I figured a couple of hooks (system wide) for mouse and keyboard should do it. I'm new to the subject and have read a couple of the articles here on CodeProject but have some questions. One article said that you shouldn't use MFC and/or C runtime library calls. No problem but I need to communicate to the teacher's computer using Winsock so my question is since, I believe, that Winsock is part of the platform SDK and/or part of the standard Win32 API, can I use Winsock in the global dll implementation? Or, should it be a separate executable that communicates with the DLL via windows messages and relays the commands to the server app (teacher's computer) via Winsock?

Anyone have any suggestions on how I should implement this? I figure the teacher runs an executable on her machine that sends/receives command to the students' (client) computers using Winsock. The students' computers should all run the DLL (should this be a service?) or should I also create an executable for the clients that install the DLL and autoruns as a service?

OT. Why hasn't anyone already built this application and is it worth selling?

String Replacement

Blake Miller10-Nov-04 8:33

Blake Miller

10-Nov-04 8:33

I have a string that might contain one or more occurences of 'search' text and I want to replace all occurrences with some 'replace' text.

However, it can not be the usual dumb replacement, because I can not afford to have the text Tag100 replaced with TAG200 if the search text is 'TAG1' and the replace text is 'TAG2'.

Anyone know existing locations of some 'smart' text replacement code in C or C++?

Re: String Replacement

John R. Shaw10-Nov-04 8:54

John R. Shaw

10-Nov-04 8:54

I am not sure if the regular expression search in VC++ can do it, but I am sure that Regex++ can. Regex++ is part of the boost library and is free for downloading.

I hope that helps!
Good Luck!

INTP

sockets question

CherezZaboro10-Nov-04 7:41

CherezZaboro

10-Nov-04 7:41

Strange! I have a server and a client. Using straight winsock2 API and event notifications. Dual processor machine!!!
Problems/obesvations:

1) If client and server are both running on the dual processor (same computer) and client allowed to use both processors, often but not always client does NOT get notification about incomming data.

2) If client and server are both running on the dual processor (same computer) and client is limited to either processor, client gets all the notifications fine.

3) If client is running on the dual processor and allowed to use either processor, and Server is running on a different machine, client gets all the notifications fine.

4) If Server is running on the Dual processor and can use either processor, and client is running on a different machine, often but not always client does NOT get notification about incomming data.

5) If Server is running on the Dual processor and is restricted to a single processor, and client
is running on a different machine, often but not always client does NOT get notification about incomming data.

6) If client and Server are both run on same dual proc machine, and server restricted to one processor but client is allowed to use both, often but not always client does NOT get notification about incomming data.

Any ideas why?
Help!

Re: sockets question

Nitron10-Nov-04 10:51

Nitron

10-Nov-04 10:51

I've run across this myself. Are you spawning the socket in its own thread? It seems that sockets aren't inherently thread-safe, so the easiest way I found to work around this is to keep the socket in the UI thread (for better or worse).

~Nitron.

ññòòïðïðB A start

Re: sockets question

CherezZaboro10-Nov-04 11:58

CherezZaboro

10-Nov-04 11:58

Wow! You lost me there. Should I or should I not spawn it in it's own thread? Also how does UI trhead solve that? Excuse my uneducated ignorance. Blush | :O

Do you mean you post messages to that thread with things to do?

ascii to binary

Anonymous10-Nov-04 7:14

Anonymous

10-Nov-04 7:14

hai,
I'm working on VC++ win32...In my program i'm reading some ascii characters in char[] from say a file. I want to convert the ascii char to binary value...is there any easy way to do the conversion??pls help...
Thanks a lot.

Re: ascii to binary

David Crow10-Nov-04 7:23

David Crow

10-Nov-04 7:23

Was this of no help?

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Re: ascii to binary

Anonymous10-Nov-04 7:35

Anonymous

10-Nov-04 7:35

No..I want to convert to binary..

Re: ascii to binary

David Crow10-Nov-04 7:56

David Crow

10-Nov-04 7:56

It's imply another base. Use itoa() to convert from one base to another.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Re: ascii to binary

GDavy10-Nov-04 10:02

GDavy

10-Nov-04 10:02

The value of a single ascii char is just 1 byte (supports 256 different chars (including whitespaces linefeeds etc...) so what more is there to convert?

Greetz,
Davy

Re: ascii to binary

Anonymous10-Nov-04 10:24

Anonymous

10-Nov-04 10:24

Actually what I want to do exactly is..I'm reading a char from a file into a byte array. eg. suppose I'm reading a "A" from the file I have to display the binary equivalent '01000001'. How should I do this programatically.
Thanks a lot.

Re: ascii to binary [edited]

PJ Arends10-Nov-04 10:37

PJ Arends

10-Nov-04 10:37

Do you mean you want a text string containing the ones and zeroes of the binary value?

If so this may help

string ConvertToBinary(TCHAR ch)
{
   string out;
   int size = sizeof(TCHAR) * 8; // Fixed, forgot the  times 8 part
   for (int i = size - 1; i >= 0; --i)
      out += ch & 1 << i ? '1' : '0';
 
   return out;
}

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

Re: ascii to binary

Branislav11-Nov-04 1:32

Branislav

11-Nov-04 1:32

Port modified message

Fernando A. Gomez F.10-Nov-04 5:11

Fernando A. Gomez F.

10-Nov-04 5:11

Is there a windows message that triggers when data is sent to a port? Thanks a lot.

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