Top Solutions

I'm trying to decode either of the keys - ProductId or DigitalProductId - from the registry to get the Product Code needed to install Windows.  Both keys can be found here:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion

I...

I am trying to change this to preemptive shortest job first, but I honestly just do not understand what to do. I know that I need to remove the quantum and determine the scheduling based on the next burst length..I think. But I really do not...

Today will be the first evening for an engineering class... I've already previewed tonight's lecture material that includes some sample C++ code.

I took C++ ~10 years ago.   Haven't used it since and am very rusty.   I still have Borland's C++...

I'm currently trying  to develop an application that can generate keystrokes into another existing application. I've read around a bit and found that SendInput() is probably the function I need to be using, yet I'm having some problems getting it...

I found a simple code on the net about video capturing with opencv functions. However, when i compiled it, it didnt work, cvQueryFrame didnt grab a frame. Actually my camera doesnt a usb camera just connect the pc through DV Capture + Tv Tuner...

In opencv (windows), I want to switch from different cameras (I have 3 fire-i cameras).

But it seems that it can only use cvCaptureFromCAM(0) or cvCaptureFromCAM(-1) to get the input.

It get NULL for all other index>0. such as...

i created a service.
installed it
i get an error 1063 when trying to start the service using StartServiceCtrlDispatcher();

what have i done wrong?

see the my code below.

thanks
efratk


// MyServiceTest.cpp : Defines the entry...

I am creating a program in c++ that uses cURL.

I ran into this error and I need help figuring it out:

make: *** [test.exe] Error 1

I put some screenshots here so you can see.
http://www.pocourl.com/eclipse3.4.2/

I have a code here where i can do diffrent type of function to a triangle(rotation,translation,scaling,changing colour) now i want to convert everything into 3D,where the triangle become a tetrahedron. Can i do it in the same file or do i...

Ok I am trying to develop a solution to the 8 queens problem.  What I am trying to do is represent the chessboard as an array of integers.  When I build it, I don't get any errors but when it run it, it prints something along the lines of...

<< (Left bitwise shift): This shifts every bit in a value n places over to the left, where n is the right-hand side parameter.

unsigned short int x = 255;
// x = 0000000011111111 in binary notation
x << 5;
// x is now 0001111111100000 in...

Dear experts,

This seems a common issue (Faulting module path: C:\Windows\syswow64\KERNELBASE.dll) but no one really knows what's causing it and how to solve it. Can someone please shed some light? Looked online and saw tons of users...

Variants of this question have been asked several times.  How do you call functions from a COM object created with Visual Basic (or anything else for that matter) from C++?

Well, it's not too difficult if you implement MFC and use...

Using Dev-C++ 5 Beta 3:

----
#include <iostream.h>
#include <conio.h>

int main()
{
  gotoxy(1,1); // Not important where
  cout << "Hello world.";
} // end main()
----

Returns the error "[Linker error] undefined reference to...

I'm trying to write a simple C++ program that will live on a variety of Windows platforms (98 through XP).

The program reads a simple configuration file, and depending on one of those variables, it obtains data either from a file or a database...

I have the following code that loads a bitmap file from a zip file (using Zip Utils) and copies the memory buffer into a HGblobal, so that it can be loaded into a GDI+ Image object from a Stream.
The code compiles fine - however the bitmap is...

Write a program that reads in a weight in pounds and ounces and putputs the equivalent weight in kilograms and grams.  Use at least three functions: one for input, one or more for calculating, and one for output.  Inlcude a loop that lets the...

Hello experts!

Do you know any quick and easy OCR example created with OpenCV please?

Thank you

panJames

     Dear Experts,

  We decided to use crypto++ library to build the public key encryption with RSA to exchange the symmetric key to use with AES.  However, I getting a hard time getting the crypto++ library to work with our project.  I use...

Hello Xperts !  i have a C++ code that saves the output of Graphics program to a BMP File.  but i have few doubts in it, May i post the code and my doubts here ?
Please REply. Thanx.

I recently got charged with updating / modifying an existing C++ DLL.  I starting updating some of the functions to their security-friendly counterparts and am running into problems.

It seems that I am having problems with my change of fopen()...

Is there a more efficient way to translate the characters to morse code instead of using this many if/else if statements?

Hi
I am trying to connect to a secured access 2010 database from C++ code using ADODB
Windows 7, C++ compiled using VS2010

Using the following connection string:
"Provider=Microsoft.ACE.OLEDB.12.0;Data...

hello experts, i am trying to write an arry of structs to a file (binary) using fwrite and reading the same using fread.
program given below is not working accurately, please tell me where i am wrong.
thanks.

#include<stdio.h>...

Year ago I wrote a windows service (using an CAtlServiceModuleT<> based class), it worked fine. I did not touch the code since then.
Now I need to return back to its further development and I'm unable to even start the service.
When I trying to...

Hi All,

   I have an application tha uses <pthread.h> file. I do not have that file on my system. Can anybody give it to me... u can paste the code (if it not too big) here or you can mail it to ananth_nidhi@yahoo.com. Or u can also tell me...

Hello everyone, I hate to make my first question as my first post, I would like to become a part of this seemingly great community, but I need to ask a question because I am stumped.

I need to create a Magic Square. This is my homework...

Hello.

Maybe this is a simple one.

I want to search a CString string for a substring.

I can use CString's Find member but it is case sensitive.
Is there a way to shut off case sensitivity?

CString Var1="abcdefghijklmnopqrstuvwxyz";...

Hey Guys I am back!

OK I a trying to build a simple program to translate the english version of a sentence into pig latin.  Below is what I have so far, and I know I am on the right track because it does print out (sort of).  If I input the...

I have a KeyboardHook (as a DLL) which senses all keyboard activity and it is of type WH_KEYBOARD

The keyboard hook is working well and the keyboard callback procedure is called with parameters WPARAM and LPARAM

I am able to sense the key...

Hello experts,
in my C++ program (console app)  I need to convert a LPWSTR to CHAR*.
---
      //*********************************      
      wchar_t *pServer = L"\\\\mycomputer";            // server to run on
      wchar_t *pShare  = L"myshare";                            //...

I am trying to create a program which takes ownership of a registry key (and subkeys), adds the current user to the permissions list and then deletes the key and all subkeys.

I can succesfully take ownership of the key and I can change the...

What follows is a function that I wrote to compare two SYSTEMTIME structs and return the difference between the two, in seconds.  As suggested by MSDN, I converted the SYSTEMTIME structs to FILETIME structs, stored the FILETIME structs into...

hello,

i having problem with my spacebar

i need to have the space key toggle the animation on and off.
however, i really can't find any relevant example about this topic.

this is wat i've found...

Ah hello.

I have been looking into how to monitor changes to a directory; i.e. receive notification that a file has been added to a directory.  After reading many previous questions on here and looking at numerous linked articles, I found that...

Hi,

What's the best way to convert from size_t to std::string?

Thanks,
Uni

I need a matrix multiplication algorithm using loops.

Let i = row #;
Let j = column #;
outcome = A x B

So I would want something like:

The for loop order doesn't matter.

here is my code as it is right now.

//--------------------------------------------------------------------------
// This program will read the values of 3 sides and determine if they are an
// invalid, equilateral, isosceles, right, or...

I am using a third-party application whose GetGet function returns type _variant_t.  In their MFC examples, they use the code below to acquire the data from the function.  However,
I am trying to write a Windows application using pure C/C++,...

I am trying to get input from a serial device via interrupts.

I have seen many examples on the internet, but they are all written to be compiled in Turbo C or Borland C++.

Here is code that comes closest to compiling.

The errors are...

I'm compiling my C++ program under Ubuntu 6.10 using KDevelop.  Unfortunately, it needs to run on an embedded device with no compiler running Debian.  I get the error "version `GLIBC_2.4' not found" and "version `GCC_4.2.0' not found" when I try....

I have try to write the code to move the camera around an object,but i only achieved that by using keyborad. How can i do it by using the mouse? like when u click the mouse button and at the same time move the mouse around,u will c different...

Hello,

i need some help with handling wstrings correctly.
--- PART 1 ---
How could i convert things to wstring ?
int a = 10;
wstring mystr = (L"foo");
mystr.append(ITOW(a));
Does something like ITOW exist ?

--- PART 2 ---
What i...

Hi,
 What r the basic diff. between SSAD(Structured System Analysis And Design) and OOAD (Object Oriented Analysis and Design)
 Thanks in advance,
Anantha

I need directions for creating a dynamic library in visual studio 2005, instead of a static library. The library should not necessary be conforming to the "COM" sta ndard the only demand is that I can use it in other c++ projects.

The dll...

I need to write a program that uses both a C-string and a string data type.  I have the C-string type working but I'm not sure how to incorporate the string data type.  Can someone point me in the right direction.  I found an example in Experts...

Hi guys,

i have a small question. I have my project and I have I90ControllerDlg.cpp.This is you can say my main. I have another .cpp file called multipoletutorial.cpp that I added to my project tree. I already compile it and everything is ok,...

When calling DoModal of a CDialog derived object (an error message dialog),
it is not shown on the screen; the event OnShowWindow (WM_SHOWWINDOW) is not even reached.

The parent window is a CFrameWnd derived class having the attribute...

Hi,

Is there any way to read in a text file as UTF8 format. Or store it in a UTF8 buffer?  Thanks.

Perry.

P.S. This is extremely urgent so I'm awarding it 500 points.

This is weird:

A description of the problem:
The code here (most likely full of errors / oversights) doesnt seem to operate in the proper timeline.  The std::cout line near the bottom appears to execute prior to the cout commands.  If all...

Hello, I'm developing a simple Windows application with C++ and Win32 API (I'm newer on it) and I have find problems on creating a button with an image. I know that I must send a message to set the image, but I cannot make it work. That's what I...

I am ahving errors  
C:\Documents and Settings\hariere\Desktop\testcrypto\testcrypto.cpp(67) : error C2065: 'PROV_RSA_AES' : undeclared identifier
C:\Documents and Settings\hariere\Desktop\testcrypto\testcrypto.cpp(101) : error C2065:...

Hello Experts,
i have written small program to implement Robin Karp String Matching,
but it is not giving correct results,
Please check,
where i am wrong.

Thanks.

Hi every one. This is my first question here, so please bare with me.
 
I have a problem...

When i compile my progtam in vc++ 6, i do not get any compile or link errors, but
when i am running it, it gets to a point and freezes, and windows...

Hi experts:
I use Turbo C++ 3.0 in Win 2K.I use command-line compile "tcc.exe" to compile my source code.But it can't be compiled completely.Error messages show that I don't set the path of INCLUDE and LIB.I find some information of...

Hey guys,

I'm trying to run an OpenGL 2.0 program that is supposed to apply GLSL shaders on the scene. The code runs fine on a Mac, but running it in Visual Studio 2005 yields a pop-up dialog containing:

Unhandled exception at 0x00000000 in...

Hi Experts

I would like to have source code to find Inverse of N X N matrix
either in C or in C++

Any algorithm can be used Crout's, Gaus' or finding co-factor

Regards
Shiju S N

Hello, how do I convert from IP address to network byte order and then back to IP address using char and long?

I have:

char ipaddress[15]='127.0.0.1';
long x;
x=inet_addr(ipaddress);
printf("x=%d\n",x);

but how do I do the reverse if...

I plan to test a short complete NT SERVICE program as listed inside MSDN, but after installation in the NT Service, I cannot start it or debug in the console application, with  the error message in the title!!
would someone help me?
thank you...

I am currently getting the following error when I try to initialize a member of the AT_INFO structure:

C:\rocklobsterj\Ptest1\Netschedule.cpp(25) : error C2440: '=' : cannot convert from 'char [42]' to 'unsigned short *'

The...

Hi,

I have a code developped under WIN32 that I need to port under LINUX.

I have find way to translate thread and mutexes, and now come the problem of events.

The WIN32 library use CreateEvent and SetEvent and I want to translate these...

I am looking for C/C++ code to convert a Unix timestamp (seconds since Jan. 1, 1970) , e.g.

1193060347

to a human-readable date format, e.g.

Mon, 22 Oct 2007 13:39:07 GMT

I am using CreateProcess, compliments of jkr a couple months ago, in a switch board type application that launches windows apps. and I need to know when the created process is closed/terminated.  I see/understand the examples using...

Hallo everyone,

I have a question about memory leak. I use Visual Studio .Net MFC.

I have 1 propertysheet and 2 classes for 2 pages in the sheet. Memory leak occurs after ExitInstance() which I can't debug and it does not appear...

Platform: HP_UX,  SUN Solaris etc.
Language: c/c++

I have a program where two or more processes share resources. Only one can change the shared resources but more than one can read them at simultaneously. In order to avoid inconsistent state...

First off, my project works great in VS2008. No issues. So I port it over to VS2010..

Okay, so first time around, I build my project, and it works fine. I can build the project, makes the exe, etc.

Second time around, one project in the...

I'm using LibSerial on Ubuntu to read and write data on serial port.

At the moment, I'm able to write and receive strings over the serial port, but my code does not work very well: in particular, I'd like to control the reading function in...

I am interested to know more about Modulo 256 addition
It has been suggested to me that performing such an addtion across a series of bytes and taking the least signigicant byte is the equivalent of performing an against each byte consecutively....

Hi,

Can someone explain to me how this is used please?
I read several explanation but I still don't quite understand. If you could explan to me in simplest terms, greatly appreciated.
When, why and how do you use it if this makes any sense??...

I have a problem trying to get CSV files to work with my program. It works fine with tab delimited but not with csv. Anyone know of a way to read in csv files and write back out to them.  The values separarted can be various lengths. Thanks

how to get the process name from the PID? (winapi C++ visual C++ 6.0)

I need to translate process id (PID) to process name (such as "notepad.exe")

any idea?

ps

execution speed is also important

As I understand it the following simple program should get the first line of the unicode text file "In.txt" and write it to "Out.txt".
In practice the stl seems to be using some form of getc to read the characters from the input file instead of...

I have been trying for the past 48 hours to get all the errors to go away and create a successful build of Ntop version 3.3.8 for Windows. I know nothing about windows compilers, I'm using the ones we have a work (Visual C++ 6.0 and C++ 2008)...

Hi Experts,

I have a client-server application using socket to communicate.  At times, the server disconnects the client because the write to the client returns EWOULDBLOCK. I initially thought that the client is not reading fast enough thus...

Hi,

I have a linking problem after attempting to build the file. The error is as follows:

glovenew.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall vhtIOConn::~vhtIOConn(void)" (??1vhtIOConn@@UAE@XZ)
glovenew.obj...

I am working with an application, and I get a fault in the application log that states:  Faulting application (application, version), faulting module msvcr90.dll, version 9.0.30411.0, fault address 0x0002464c.  Is there any way to tell what's at...

Hi,

Our C++ application (native, unmanaged code) checks whether some essential DLLs are registered.  If not, it tries to register them.  In other words, the automatic registration must be done when the application is executed for the first...

Below is my attempt to build a C++ Decimal to Hexadecimal conversion.  There are several errors, so outside of what I think I'm logically doing correct, my syntax must be incorrect with C++ programming.  I am new to C++ and haven't had really...

Hello All,

I own and use often Adobe Acrobat Pro 9.5.  One way I use it is to print documents from the web, thus, converting the web documents to PDFs.

I receive the following error when opening documents with Acrobat or printing to the...

I've got a .NET 2003 solution where part of it is a large unmanaged C++ class (not MFC) that needs to request user input.      I created the dialog (IDD_DIALOG1) using the resource editor, then #include'd the resource.h file in the class file.  Both...

Hello experts,
in my C++ program (MFC)  I need to get a substring of a CString.

   CString strCString;
   CString strSubString;

   In VB I can write ( I start looking for "A=" from position 4, therefore the length is reduced by 4):
     ...

Hi All,

I have to take a previsor pre-employment test. Is there any sample questions or references to prepare this test.

Thanks,
bb.

I know this is a pretty simple thing but i have been struggling with it, i know how to texture map a square etc, but im not sure how to create or imput the coordinates to texture map a shere. this is what im trying to do:

any help would be...

Hello experts,
please tell me
1. what is difference between Linear and Non Linear Data Structures ?
Linear are - Array, Linked List, Stack, Queue
Non Linear are - Tree, Graph
2. In which category does Heap Come ?

This code works in C#.  It prints a pdf file to a printer using whatever program is associated with PDF files.  Example Adobe or PDF999.  It does not need to know the pdf software name and location.

I need to write this same code in VC6.0. ...

hey im trying to use Time.h to get the time in seconds it takes for the processor to sort using mergesort and insertionsort. the problem is that Im getting 0 every time.


the code would look something like

clock_t start, finish;

start...

I am communicating between a Big Endian and Small Endian CPU and need to correctly order the ints between them.  I tried the following macro code:

// Swap Little Endian to Big Endian and visa versa

#define SWAP_ENDS(A)                    \...

I'm just getting started with OpenCV 2.1, and followed the instructions on http://opencv.willowgarage.com/wiki/VisualC%2B%2B_VS2010 and I can build and compile with no issues, but when I run the application, I get an error message saying:

The...

Generate the first 21 members of the Fibonacci sequence, store them in Memory, and use Dump Memory to display the sequence using Assembly code for intel based computers.  I am trying to use use loops and jumps...Please help

Dear Experts,

i want code for Jacobi Method. Please help me.

Thanks

Hello,

I am trying to create a section in my app where users can email me. I am using c++ builder 6 and idSMTP.

            IdSMTP->Host = "www.mywebdomain.com";
            IdSMTP->UserId = "info@mywebdomain.com.au";
           ...

Where can I find a download site for Borland Turbo C++ 3.1? It's an old version a college course is using. (c) 1991, 1992 so a Win3.1 app, but working on Win2000. Thanks.

Are you up for a challenge?
Several of us C and ASM programmers had a fun learning experience a few years ago when we tried to outdo each other by writing "The World's Fastest" binary-to-hex converter and output-formatting function.  Now I'm...

Hi!

I want get the path to the executable. In mfc this is done with GetProcessImageFileName or GetModuleFileNameEx, but this is not possible using a 'standard' c++..

Argv[0] only returns the file name. So how do I get this info?

Thank you!

I've an existing kernel mode driver. I want to count the number of times it is being loaded and save it some where in the registry.

I've already read many pages from the DDK's help about using ZwXXX and RtlXXX functions, but as my background...

Hi,

I'm trying to create and use an instance of TXMLDocument at runtime. eg.

TXMLDocument *XMLDoc;

    XMLDoc=new TXMLDocument("c:\\test.xml"); //c:\test.xml is a valid xml file
    XMLDoc22->Active;
    _di_IXMLNode...

Hi all,

Having an __int64 value representing a millisecond time since January 1, 1970, 00:00:00 GMT, how can I convert it into a string representation of format yyyyMMddHHmmssSSS (milliseconds included) in the most efficient way? I'm well...

hi ppl,
  I need a code in "C programming" or in C++ to find a convex hull for a given set of points on a  2 dimentional plane.
The input should contain a set of 15 points on a 2-D xy plane.
P (x, y)
1 (1, 4)
2 (2, 3)..
..
..
The output...