C / C++ / MFC

Re: How to Compare Builds

14-Mar-06 6:09

Use fc /b file1 file2 from a command prompt.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Steven Mattison14-Mar-06 6:14

Steven Mattison

14-Mar-06 6:14

I've tried that. There are 13 bytes that are different. I can see no reason for them to be different since the source code is the same and the same version of Visual C++ is being used. Is there a build date or something in the DLL that would cause the miscompare? If so, is there a way to ignore it?

Thanx,
Steve

Re: How to Compare Builds

David Crow14-Mar-06 6:31

new in C++ & Visual C++ 6, please check my code

14-Mar-06 6:31

Steven Mattison wrote:
Is there a build date or something in the DLL that would cause the miscompare?

I think I read somewhere in the PE literature about the linker writing date-related information to the file. It should be the number of seconds since December 31^st, 1969 @ 4:00 P.M.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

mrby12314-Mar-06 5:38

Re: new in C++ & Visual C++ 6, please check my code

14-Mar-06 5:38

I wrote a small code to read a file and write it out. I found the program can not read all the lines. I do not know what is wrong ? Please ckeck it for me.

---------------------------------------------------------------------

// blast_vib_procDlg.cpp : implementation file
//

#include <iostream.h>
#include <fstream.h>
#include <string>
using std::string;

int
main()
{
// read seed waveform data file
// string qq;
char filein[35];
char fileout[35];
ifstream f_ptr1;
ofstream f_ptr2;
char buffer_seed[90];
int i=0;
//
string pp;
cout << "input file name ?";
cin >> filein;
cout << "output file name ?";
cin >> fileout;

f_ptr1.open(filein);
if(!f_ptr1) {
cerr << "error: unable to open input file: "<

David Crow14-Mar-06 5:43

Re: new in C++ & Visual C++ 6, please check my code

14-Mar-06 5:43

ruilin Yang wrote:
I found the program can not read all the lines.

How many lines are in the file? The while loop terminates when it encounters a \n character. Is this intentional?

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

mrby12314-Mar-06 5:56

Re: new in C++ & Visual C++ 6, please check my code

14-Mar-06 5:56

I am using VC++ compiler.

My intention is to read a file completely. So my intension is to read until
the end of the file. I do not know what is the best symbol to put at

while(!(qq=="'\n'")). I tried a few different symbols, does't help.

Thanks

David Crow14-Mar-06 6:06

Re: new in C++ &amp;amp;amp;amp; Visual C++ 6, please check my code

14-Mar-06 6:06

I think you need to use the eof() method instead. Something like:

while (! f_ptr1.eof())
{
    f_ptr1.getline(...);
    f_ptr2.write(...);
}

On a side note, are ruilin Yang and mrby123 one in the same?

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

mrby12314-Mar-06 6:23

14-Mar-06 6:23

Hi DavidCrow

You solved my problem. ruilin = mrby123
Thanks

By the way, I do not like the f_ptr1.getline (par1,par2,par3); I do not like to
specify the number of the characters or the third parameter ' '.

I like to use the string function: getline(f_ptr1,s), This looks more robust,
but it does not work. The compile do not know the function, even you can see
I have #include string

The program is funny, when I put #include iostream and #include fstream
I got :'ifstream' : undeclared identifier

I have to put: #include iostream.h and #include fstream.h
Then the program works. I do not understand why I can not use #include iostream.

-- modified at 12:39 Tuesday 14th March, 2006

New in c++

ADY00714-Mar-06 5:27

ADY007

14-Mar-06 5:27

Hello, i am a new in c++! i know c#, vb.net, java, asp.net but C++ i dont know nothing! how can i start my new project from because when i created a new project .. many items appeard Frown | :(

I am using VB.net 2003

Adrian De Battista

David Crow14-Mar-06 5:41

14-Mar-06 5:41

ADY007 wrote:
how can i start my new project...I am using VB.net 2003

You might want to start with a VC++ compiler.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

mrby12314-Mar-06 5:49

14-Mar-06 5:49

ADY00714-Mar-06 5:52

ADY007

14-Mar-06 5:52

yes but i can't see any VC++ Frown | :(

Is it like console?

Adrian De Battista

toxcct14-Mar-06 5:57

toxcct

14-Mar-06 5:57

it maight not have been installed with the other parts of your Visual Studio environment...

mrby12314-Mar-06 6:03

Equivalent of POSIX pthread_cond_t in Windows threading API?

14-Mar-06 6:03

I made a console project with my VC++ 6.

paul_a_chapman14-Mar-06 4:52

paul_a_chapman

14-Mar-06 4:52

Hi,

I currently porting some code from Linux to Windows. I have decided against a windows implementation of the POSIX threading libraries and opted for windows threading.

Previously in my code, I had conditional run conditions using the pthread_cond_t, is there an equivalent in the windows threading API?

Any help would be greatly appreciated,

Paul.

Re: Equivalent of POSIX pthread_cond_t in Windows threading API?

Nemanja Trifunovic14-Mar-06 6:48

Nemanja Trifunovic

14-Mar-06 6:48

paul_a_chapman wrote:
I have decided against a windows implementation of the POSIX threading libraries and opted for windows threading.

That was a mistake Smile | :)

paul_a_chapman wrote:
I had conditional run conditions using the pthread_cond_t, is there an equivalent in the windows threading API?

Unfortunatelly, no, at least not directly. Look here[^] for a workaround.

My programming blahblahblah blog. If you ever find anything useful here, please let me know to remove it.

Re: Equivalent of POSIX pthread_cond_t in Windows threading API?

paul_a_chapman14-Mar-06 21:24

paul_a_chapman

14-Mar-06 21:24

Thanks for your reply, that link is useful. I did try using the win32 pthread libraries, but I kept getting exception errors. The code functions correctly on linux but not with the win32 pthreads library. The decision was made above me to use windows threading api.

Thanks again.

Paul.

why does barcode need special font?

includeh1014-Mar-06 4:43

includeh10

14-Mar-06 4:43

1. barcode is drawn by lines (space and bar), why does it need font? font is useless when we draw lines.
2. what is correct width of bar or space? - i.e. 0.2 mm etc.
3. what is correct height of barcode?

A nice tool for optimizing your Microsoft html-help contents.

Includeh10

Re: why does barcode need special font?

David Crow14-Mar-06 5:24

Open a external application due tu the document type

14-Mar-06 5:24

includeh10 wrote:
1. barcode is drawn by lines (space and bar), why does it need font? font is useless when we draw lines.

See here.

includeh10 wrote:
2. what is correct width of bar or space? - i.e. 0.2 mm etc.

A barcode is comprised of bars and spaces. I believe the leftmost bar, which is one unit wide, sets the stage for the remaining bars and spaces.

includeh10 wrote:
3. what is correct height of barcode?

I believe it is governed by the product on which the barcode is placed. For example, a large box can afford to have a large barcode where as box of cookies could not. Another determining factor is how far will the scanner be from the box.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Alfred Willi14-Mar-06 4:42

Alfred Willi

14-Mar-06 4:42

I'm writing an application, where I need to save links to external documents (.xls, .doc, .txt, ...). In Windows, when I double-click to such a file, it'll be opened automatically by the corresponding application.

double-click to test.xls opens Microsoft Excel
double-click to test.doc opens Microsoft Word
double-click to test.tif opens the corresponding graphical application
and so on...

How can I implement this functionality in my application, working under Visual C++ / MFC ?

regards
Alfred Willi

Re: Open a external application due tu the document type

includeh1014-Mar-06 4:50

includeh10

14-Mar-06 4:50

a type of file (extension) is associated with an application.
u can find all info about this in system register (run regedit.exe).

e.g. doc file can be opened by Microsoft word.

A nice tool for optimizing your Microsoft html-help contents.

Includeh10

Re: Open a external application due tu the document type

David Crow14-Mar-06 5:40