C / C++ / MFC

Cedric Moonen30-Nov-07 0:53

Cedric Moonen

30-Nov-07 0:53

You need to put include guards in your header file:

#ifndef YOURFILE<br />
#define YOURFILE<br />
<br />
// Code here<br />
<br />
#endif

(replace YOURFILE by something unique, like the file name).
You could also use #pragma once for microsoft compiler.

Cédric Moonen
Software developer

Charting control [v1.2]

Kiran Pinjala30-Nov-07 1:00

30-Nov-07 1:00

Cedric Moonen wrote:
You could also use #pragma once for microsoft compiler

#pragama once is already added.
problem remains the same.

Adi Vishayam

CPallini30-Nov-07 1:10

CPallini

30-Nov-07 1:10

you have to declare it extern inside your include file (i.e. "one.h")

extern CSocket SomeSocket;

and then define once inside a single source file (e.g. in your "one.cpp").

CSocket SomeSocket;

The mistake is in your include file: as it stands CSocket SomeSocket is defined in multiple source files.

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.

Iain Clarke, Warrior Programmer

Iain Clarke, Warrior Programmer30-Nov-07 6:39

30-Nov-07 6:39

CPallini has given you the correct answer.

But I see this mistake a lot with novice programmers.

The linker is complaining because (as it says) you have two instances of SomeSocket.

Before the compiler attacks you "one.c" file, a preprocessor attacks it, and processes the includes.

An easy exercise for you: remove the #include from one.c, and cut and paste the whole of one.h into the top of one.c.
Do this for two.c. Now have a lightbulb moment as you realise what the linker is telling you.

Iain.

modeless dialog box

AnayKulkarni30-Nov-07 0:33

AnayKulkarni

30-Nov-07 0:33

Hello to all,
I have designed one modeless dialog box which will get invoked after clicking one button and will get destroyed after some time automatically, now i have inserted a progress bar on this dialog box and i want that untill and unless this dialog box is existing it should show the progress bar with process of progress, now the problem is that progress bar is getting displayed on dialog box but it is not showing the process of progress. how to do it? can we insert progress bar on modeless dialog box? can any body help me plz?

Thanks and Regards,

Anay

KarstenK30-Nov-07 1:48

KarstenK

30-Nov-07 1:48

Insert a Timer function in which the bar gets updated. 100ms is a nice value.:->

Greetings from Germany

Nelek30-Nov-07 1:49

Nelek

30-Nov-07 1:49

AFAIK yes, it is possible, but how accurate it is... depends on code.

Can you show some related lines?

Greetings.

--------
M.D.V. Wink | ;)

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
“The First Rule of Program Optimization: Don't do it. The Second Rule of Program Optimization (for experts only!): Don't do it yet.” - Michael A. Jackson

JudyL_MD30-Nov-07 2:25

JudyL_MD

30-Nov-07 2:25

AnayKulkarni wrote:
progress bar is getting displayed on dialog box but it is not showing the process of progress

You can create a function in the modeless dialog's class that updates the progress bar's state. Call that function at various points in your process.

Judy

Problem with EXIF Format to BMP

David Crow30-Nov-07 3:22

David Crow

30-Nov-07 3:22

AnayKulkarni wrote:
...but it is not showing the process of progress.

Do you have code in place to do the updating?

"Normal is getting dressed in clothes that you buy for work and driving through traffic in a car that you are still paying for, in order to get to the job you need to pay for the clothes and the car and the house you leave vacant all day so you can afford to live in it." - Ellen Goodman

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

KANAKESH30-Nov-07 0:17

KANAKESH

30-Nov-07 0:17

hi all,

Can anybody help me in converting EXIF format to 24 bit BMP format?,

I got the following details When i checked about the format of the jpg file

1. JPEG FOrmat : EXIF
2. EXIF version : 0220
3. Encoding used : Baseline

kkr

Re: Problem with EXIF Format to BMP

Paresh Chitte30-Nov-07 1:16

Paresh Chitte

30-Nov-07 1:16

Will this[^] helpful ?

Regards,
Paresh.

Re: Problem with EXIF Format to BMP

Mark Salsbery30-Nov-07 10:03

Mark Salsbery

30-Nov-07 10:03

If you don't want to do the JPEG decompression yourself, you could use
GDI+.

For example, using the shared Visual C++ class CImage (which uses GDI+ for loading/saving)...

CImage img;
img.Load(_T("C:\\Path\\MyEXIFfile.jpg"));
img.Save(_T("C:\\Path\\MyEXIFfile.bmp"), ImageFormatBMP);

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Looping through a string

admgamer29-Nov-07 23:29

admgamer

29-Nov-07 23:29

Hi,

Im trying to loop through a string to get all layout of words in a forward manner and then search for patterns elsewhere.

I first created this:

spacePos.push_back(0);
for(int j = 0; j<input.length()+1; j++)
="" {
="" if="" (input[j]="=" char(32)="" ||="" j="=" input.length()){
="" spacepos.push_back(j);
="" }
="" }

basically="" pushes="" integers="" onto="" a="" vector="" of="" ints,="" with="" the="" start="" and="" end="" position,="" also="" where="" any="" spaces="" are.

then="" i="" try="" ot="" loop="" as="" so:

="" for(vector<int="">::iterator ii = spacePos.begin(); ii!=spacePos.end(); ii++)
{
for(vector<int>::iterator ii2 = spacePos.begin(); ii2!=spacePos.end(); ii2++)
{
if (*ii2 == 0 || *ii >= *ii2) continue;

if (input.substr(*ii, *ii2) != "")
{
//other code
}
}
}

so if the input line was "hello i am" it would 'hopefuly' do this>

"hello"
"hello i"
"hello i am"
"i"
"i am"
etc

but the problem is, i'm counting the spaces in the first for loop and storing them and after the first iterator of the for loop for ii, it's going out of sync and the longer the string the more this affect occurs:

"hello"
"hello i"
"hello i am"
" i"
" i am"

i tried trimming but it just causes so many problems with long strings so i really want to sort this out in the first for loop where i obtain all the space positions.

Does anyone have any ideas? or maybe even a better way to do what i want?

Cheers

Re: Looping through a string

David Crow30-Nov-07 3:26

David Crow

30-Nov-07 3:26

The first thing to verify is that spacePos contains exactly what you think it should. If it doesn't, then the other two for() loops are irrelevant.

admgamer wrote:
if (*ii2 == 0 || *ii >= *ii2) continue;

if (input.substr(*ii, *ii2) != "")
{
//other code
}

What is this snippet of code supposed to do?

compile code in without unicode

Kiran Pinjala29-Nov-07 23:08

29-Nov-07 23:08

i am using vc2005 and the code is compiled in unicode mode. How to disable it?

KIRAN PINJARLA

uusheikh29-Nov-07 23:14

uusheikh

29-Nov-07 23:14

To disable unicode support and use multi-byte support instead, go to your project properties (right-click on your project and select properties under Solution Explorer), then go to "Configuration Properties" in the treeview on the left, select "General", and change "Character Set" from "Use Unicode" to "Use Multi-byte character set" from the property list on the right.

Kiran Pinjala29-Nov-07 23:16

29-Nov-07 23:16

Thank you so much.

Adi Vishayam

Kiran Pinjala29-Nov-07 23:25

29-Nov-07 23:25

I need one more help. I am debugging some pre written code. I found

#using<somex.dll>

in that. while i am compiling its giving an error

fatal error C1190: managed targeted code requires a '/clr' option

What does it mean.

Adi Vishayam

David Crow30-Nov-07 3:29

David Crow

30-Nov-07 3:29

Kastapadi.Saadhinchaali wrote:
What does it mean.

See here.

CPallini29-Nov-07 23:22

CPallini

29-Nov-07 23:22

Choose the item yourproject Properties of the menu Project
(yourproject stands for the name of the current active project),
then select Configuration Properties->General in the newly appeared window.
Finally change the Character Set property.
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.