dev-cpp-users Mailing List for Dev-C++

Hi,
look in the directory where your project file is saved.
If it isn't there look at "Project Options->Build 
Options->Directories->Executable output directory", there you can set an 
output path for the .exe files.

Christoph Harder

Sam Mryyan wrote:
>
> I just download DevC++ , when I create a project and compile it, I 
> cant find the exe file anywhere on my computer.  When should I look 
> for it?  Any help is appreciated!!
>
>
>  
> *//* 
> *Sam Mryyan
> 785-232-2773
> s_m...@ya...*
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>
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>   

I just download DevC++ , when I create a project and compile it, I cant find the exe file anywhere on my computer.  When should I look for it?  Any help is appreciated!!

 
 
Sam Mryyan
785-232-2773
s_m...@ya...

You could seed rand() with system time:


#include <stdio.h>
#include <time.h>

time_t ltime;   
unsigned int seconds = time(&ltime);
srand(seconds);
int num = rand();

int main()
{
    printf("Random number is %d", num);
    return(0);
}


It would still be a "pseudo random number", but it ought to be different most every time.  Search Google for random number generation solutions of far greater complexity.

Matt

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Hi...
  
  Is devCpp contain library for generate random number (not a rand() function) ? 
  I want to make a program that can generate random number different each the program is running ?
  
  Anyone can help me ?
  
 		
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Hello, I am preparing a system tray icon class for Windows XP.
I got stuck at Hide() and Show() member functions. I have no idea what code
should I write for them. Any help will be appreciated.
I tested the other member functions, they are all running with no error.


class CTrayIcon
> {
>     private:
>
>     public:
>     NOTIFYICONDATA    Nid;
>     CTrayIcon();
>     void Create(void);
>     void Show(void);
>     void Hide(void);
>     void Modify(void);
>     void Kill(void);
>
> };
>
> CTrayIcon::CTrayIcon()
> {
>     Nid.cbSize            = (DWORD) sizeof(NOTIFYICONDATA);
>     Nid.uFlags            = (UINT) NIF_ICON | NIF_MESSAGE | NIF_TIP |
> NIF_STATE | NIF_INFO | NIF_GUID;
>     Nid.dwState            = (DWORD) NIS_SHAREDICON | NIS_HIDDEN;
>     //Nid.dwStateMask        = (DWORD) NIS_SHAREDICON | NIS_HIDDEN;
>     Nid.uTimeout        = (UINT) 10;
>     //Nid.uVersion        = (UINT) NOTIFYICON_VERSION;
>     Nid.dwInfoFlags        = (DWORD) NIIF_INFO;    // NIIF_ERROR,
> NIIF_NON, NIIF_WARNING, NIIF_ICON_MASK, NIIF_NOSOUND
>     //Nid.guidItem        = (GUID) NULL;            // Version 6.0.
> Reserved
> }
>
> void CTrayIcon::Create(void)
> {
>     if(!Shell_NotifyIcon(NIM_ADD, &Nid)) DebugTest("Couldn't create the
> icon.");
> }
>
> void CTrayIcon::Show(void)
> {
>
>     //if(!Shell_NotifyIcon(NIM_MODIFY, &Nid)) DebugTest("Couldn't show the
> icon.");
> }
>
> void CTrayIcon::Hide(void)
> {
>
>     //if(!Shell_NotifyIcon(NIM_MODIFY, &Nid)) DebugTest("Couldn't hide the
> icon.");
> }
>
> void CTrayIcon::Modify(void)
> {
>     if(!Shell_NotifyIcon(NIM_MODIFY, &Nid)) DebugTest("Couldn't modify the
> icon.");
> }
>
> void CTrayIcon::Kill(void)
> {
>     if(!Shell_NotifyIcon(NIM_DELETE, &Nid)) DebugTest("Couldn't kill the
> icon.");
> }
>
>

I should have used a set function rather than a get
function as a private member of class Bin in my
earliar mail! A get function through an inner class
makes no sense I guess.

--- Siva Chandra <siv...@ya...> wrote:

> Hello all,
> 
> I have this problem with member access of a C++
> class.
> Let A and B be two classes. I want A to have access
> to
> only few specific private members of B. I have been
> implementing it using an inner class of class B as
> below.
> 
> class A
> {
> ...
> };
> 
> class B
> {
> public:
> 
>     class Bin
>     {
>       friend class A;
>       private:
>         int get_private_int_a_of_B(const B &b)
>         {
>             return b.a;
>         }
>     }
> 
> private:
>     int a;
>     ... other private members;
> };
> 
> The class Bin need not have to be an inner class -
> it
> can be an external friend of class B. However,
> making
> it an inner class makes the code neater, and makes B
> a
> bit more encapsulated I feel. So, my question is: Is
> there a better/neater way of providing access to
> specific private members of a class to another
> particular class?
> 
> Thanks in advance,
> Siva Chandra
> 
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> 


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Hello all,

I have this problem with member access of a C++ class.
Let A and B be two classes. I want A to have access to
only few specific private members of B. I have been
implementing it using an inner class of class B as
below.

class A
{
...
};

class B
{
public:

    class Bin
    {
      friend class A;
      private:
        int get_private_int_a_of_B(const B &b)
        {
            return b.a;
        }
    }

private:
    int a;
    ... other private members;
};

The class Bin need not have to be an inner class - it
can be an external friend of class B. However, making
it an inner class makes the code neater, and makes B a
bit more encapsulated I feel. So, my question is: Is
there a better/neater way of providing access to
specific private members of a class to another
particular class?

Thanks in advance,
Siva Chandra

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Hi,all

    thx to Ahmed Han, who solved the problem.
    it's just a defect in the makefile, if you tick the option called
'fast but imperfect' in 'Tools->complier option', you shall have the
same problem with me.
    to avoid it, just to cancel the option, and then it'll really get
slower than before (but better ---- said Ahmed)
    I think the meaning of the option is 'whether to gernerate a
'simple-and-fast' makefile or a 'perfect-but-fast' one.
    btw, I'm wondering that if this option is necessary: if there're
not many files in the project, there's almost no differences between
the two types, but if there're many files, it's much possibly to just
modify some header files between two compling, I think maybe most
people would prefer accuracy to speed.

    ps:Ahmed also offered another solution : to rebuild the whole
project each time, but I prefer to cancel the option.

wl
2006.09.24

Could you send a copy of  "testh.h"
 
Date: Sun, 24 Sep 2006 01:28:11 +0800> From: coo...@gm...> To: dev...@li...> Subject: [Dev-C++] complier bug> > hello everybody, maybe I've found a bug in Dev-Cpp 4.9.9.2> > I've created a new C++ project, and added a header file in the> project, then include the header file in the main cpp file. e.g:> > //test.h> ....> > //main.cpp> #include "test.h"> int main(){return 0;}> > the problem is: once main.cpp has been complied and remain unmodified.> The complier won't re-complied it even if I modify the file "test.h"> ---- it SHOULD compile it!> > maybe it's a bug or just a wrong setting in my computer, so guys,> please do the same thing and see if it'll happen in your computers.> THX!> > wl> > -------------------------------------------------------------------------> Take Surveys. Earn Cash. Influence the Future of IT> Join SourceForge.net's Techsay panel and you'll get the chance to share your> opinions on IT & business topics through brief surveys -- and earn cash> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV> _______________________________________________> Dev-cpp-users mailing list> Dev...@li...> TO UNSUBSCRIBE: http://www23.brinkster.com/noicys/devcpp/ub.htm> https://lists.sourceforge.net/lists/listinfo/dev-cpp-users
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hello everybody, maybe I've found a bug in Dev-Cpp 4.9.9.2

I've created a new C++ project, and added a header file in the
project, then include the header file in the main cpp file. e.g:

//test.h
....

//main.cpp
#include "test.h"
int main(){return 0;}

the problem is: once main.cpp has been complied and remain unmodified.
The complier won't re-complied it even if I modify the file "test.h"
---- it SHOULD compile it!

maybe it's a bug or just a wrong setting in my computer, so guys,
please do the same thing and see if it'll happen in your computers.
THX!

wl

Hi all,


  I am sorry, I only now realized that i made the most stupid mistake 
assigning NULL to the handle.
  Sorry for wasting your time.

Sincerily
Frederico Marques.

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Hi all,

  I am now learning about the WIN32 API functions, and I tryied to create an 
application that listed the windows that are child to the desktop.
  I got the code to work listing all the windows, and then i started to 
designed a interface for my program.
  Well, to make a long story short , I tryied to display a Image in my 
parent window, by creating a child window ( with ws_child  ) to my main one 
, and LoadImage into it.
However my image never gets displayed.

Ps:
I checked the handles and they seem correct. Do keep in mind that i'm new to 
windows API, if the code is too buggy.

[ the image is : 800x110 , .bmp ]
(Bellow i give a snippet of the code that I think relevant.)

--------------------------------------------------------
//Declaration of vars
HANDLE hImage;
HWND hwnd;
HWND ChildWnd5;
hThisInstance is arg to WinMain... nothing new here


Parent Window:

hwnd = CreateWindowEx (
           0,                   /* Extended possibilites for variation */
           "MyClass",         /* Classname */
           "Window Lister",       /* Title Text */
           WS_CAPTION | WS_BORDER | WS_SYSMENU | WS_MINIMIZEBOX, /* default 
window */
           CW_USEDEFAULT,       /* Windows decides the position */
           CW_USEDEFAULT,       /* where the window ends up on the screen */
           900,                 /* The programs width */
           800,                 /* and height in pixels */
           HWND_DESKTOP,        /* The window is a child-window to desktop 
*/
           NULL,                /* No menu */
           hThisInstance,       /* Program Instance handler */
           NULL                 /* No Window Creation data */
           );
--------------------------------

My Child Window :

ChildWnd5 = CreateWindowEx (
              WS_EX_CLIENTEDGE ,
               "Static",
               "",
               WS_CHILD | SS_BITMAP  | WS_VISIBLE ,
               0,0,800,110,
               hwnd,
               0,
               hThisInstance,
               0
           );

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

Code Part :

if (ChildWnd5 = NULL)
   MessageBox ( hwnd, "Child Window Handle is NULL", "Lin 131", MB_OK  );
hImage = LoadImage ( hThisInstance , "banner.bmp", IMAGE_BITMAP, 800, 110, 
LR_LOADFROMFILE );
if (hImage == NULL)
     MessageBox ( hwnd, "The image handle is NULL.", "Lin 151", MB_OK  );
SendMessage(
            ChildWnd5,
            STM_SETIMAGE,
            IMAGE_BITMAP,
            (LPARAM) hImage
           );
ShowWindow(ChildWnd5,SW_SHOWNORMAL);
UpdateWindow(ChildWnd5);

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I have the same problem as Eren Ezg=FC, to program a device I have to gener=
ate
pulses of a few milliseconds duration on some pins of the parallel or the
serial ports.

The sleep() function has a delay in seconds as an argument. I read that for
game programming the performance or the multimedia timers are used, but I
could never find a working example.

Best regards,
--=20
Fernando Lichtschein
li...@fi...

I don't know what problem yuor are trying to solve, so I don't know how
important the delay time is.

However, there are no normal delay available that will allow you to
generate a 2.5ms delay. In most operating systems, the delay functions
only take a parameter sepcifying the shortest allowed delay. They never
guarantee that the appliaction will be waked up immediately at the end of
the delay. If that is a necessity, you either have to use a RTOS, or you
have to write a hardware driver that will interface directly with the
hardware.

Even if you use one of the existing sleep functions, and specify a 3 ms
delay, you might get a delay of one or more time slizes - normally 16 or
32 ms.

It is possible to measure time very exactly using the performane timers
available. These can - together with a busy loop - be used to implement
short sleeps of reasonably high precision. However, it can not be
guaranteed that the application isn't preempted, even if it runs at a very
high priority.

There are also a couple of multimedia functions available that works with
reasonably high-resolution timing.

/Per W

On Fri, 22 Sep 2006, [UTF-8] Eren Ezg=C3=BC wrote:

> i need to make time delays of 0.5 ms precision. for example i need to del=
ay
> 2.5 ms. i can delay 1 ms precision with sleep and clock functions but tha=
ts
> not enough for me. if there's a way of dividing a ms to two parts that wo=
uld
> be fine.
>
> how can i do this?
>
> --
>   www.cprogramlama.net
>

i need to make time delays of 0.5 ms precision. for example i need to delay
2.5 ms. i can delay 1 ms precision with sleep and clock functions but thats
not enough for me. if there's a way of dividing a ms to two parts that would
be fine.

how can i do this?

-- 
  www.cprogramlama.net

Let me be frank with you too!

If you do yuor assignments, and spend sometime with your books, your
knowledge of the c++ language would be quite a lot more extensive.

You wouldn't have been givet that deadline, untless your instructor knew
that there was enough time to do the assignment - including reading a
number of chapters in the course litterature and googling for extra
information.

The mailing list is for people who are having problems with the tools, not
people who have problems with school assignments.

/Per W

On Thu, 21 Sep 2006, ni la wrote:

> Hai There,
>   Im jothy here !!
>   To be frank im saying that im not very good in c++.
>   I have attach one assigment that given to me.
>   If any one have any code which is similar to my assigment or anyother code that can be modify according to my assigment, please mail me that code.
>   I really need your help. Coming monday is my submition day.
>   I hope i will get some positif answers.
>
>   Thank you very much to spend your time and read this poor girls's mail.
>   Waiting for your reply
>
>
> ---------------------------------
>  All-new Yahoo! Mail - Fire up a more powerful email and get things done faster.

You normally uses winsock on Windows machines.

/Per W

On Thu, 21 Sep 2006, Timothy Wu wrote:

> Hi,
>
> On default install, there seem not to be a <netinet/in.h> and other header
> files for socket programming. Do I need to install package for this? Which
> package should I obtain?
>
> Thanks in advance.
>
> Timothy
>

Hi,

On default install, there seem not to be a <netinet/in.h> and other header
files for socket programming. Do I need to install package for this? Which
package should I obtain?

Thanks in advance.

Timothy

Hi to all,

in a win application, developed under Dev-Cpp environment, I'm using 
wxGenericDirCtrl to browse the directories, but it shows only the local 
disks. Anyone can suggest me a way (if exists) to show also the network 
resources or tell me if there's some object that allows such a feature?

I googled about it but didn't found anything useful, and I don't want to use a 
file dialog...

Thanks in advance.

kalb
 

 

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Hi, I am a new user changing from VisualC++ to Dev-C++. I have a problem
with fstreams:

1) if I open an fstream with in mode, close it (without doing anything, just
for testing) then I can re-open it, BUT

2) if I open an fstream with in mode, read all the file and close it THEN I
cannot re-opening any more.

May anyone help me? Thanks,
--Alfonso

I don't normally reply to things on this list as I'm not that 
experienced, but your post is really great! Is there a chance you could 
provide any more information.... for example what exactly are the 
problems you are having with installing and compilation?

Rory.


Vikram Patel wrote:
> I have a problem some thing with installemant and in
> compilation
> regards 
> vikram

I have a problem some thing with installemant and in
compilation
regards 
vikram

Hi,ALL:
        I'm so sorry that because I make a mistake and send out a
un-complete mail!
       
        Here's my question:
       
        typedef int (CCmdParser::*CMDROUTE)(void); 

      I declear a var use the type CMDROUTE in class CCmdParse and set it to
a member function 

      But I don't know how to call this function.

    Can anyone tell me how to call the function through the var .

 

Hongquan

 

Hi,ALL:
        I use typedef define a function type like this:
        typedef int (CCmdParser::*CMDROUTE)(void); 

    And