51,593 Topics
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| | Hey there, I've been attempting some Win32 programming for a while now, but I just can't seem to find a function where I can get the HWND by the resource ID. Just an example: [CODE] CreateWindowEx(NULL, L"BUTTON", text, WS_TABSTOP|WS_VISIBLE|WS_CHILD|BS_DEFPUSHBUTTON, x, y, width, height, parent, (HMENU)IDC_BUTTON_OK, GetModuleHandle(NULL), NULL); HWND btn = … |
| | Well, I have a test program, in which I wanted to test if it was possible to open a textfile(text.txt) for input, display it via cout, then passing the object via reference to another function, in it and display the file again(which should already be open,which is the whole point). …  |
| | I want easy algorithm with minimum order to get the sub-rectangle with the largest sum in an array for example array as a input 0 -2 -7 0 9 2 -6 2 -4 1 -4 1 -1 8 0 -2 sub-rectangle 9 2 -4 1 -1 8 maximum sum of … |
| | Hi, I am new to C++ and am getting stuck with just reading in data from a text file into an array. I have looked at lots of examples online, but can't find one that matches what I am trying to do. The data consists of two variables, date and … |
| | Hello everyone. I have recently finished a Winsock Server, and a Winsock Client. The problem is, I do not know what type of a domain/and or server I would have to buy to be able to connect my Winsock Server, to it. I already know that Winsock uses the inet_addr() … |
| | hi...following code is for postfix evaluation.....after executing the code i am getting segmentation fault error....can u help me to solve this error and what is segmentation error? [CODE=c++] #include<iostream> #include<string.h> using namespace std; class post_evaluation { public: int val; post_evaluation *nxt; void push(int i); void add(); void sub(); }; post_evaluation …  |
 | Hi all! I am programming in Qt and I am trying to draw a line on the screen, but it fails. My header file: [CODE]#ifndef GAMEAREA_H #define GAMEAREA_H #include <QWidget> #include <QPainter> #include "character.h" class GameArea : public QWidget { public: GameArea(); QSize sizeHint() const; protected: void paintEvent(QPaintEvent *event); private: … |
| | Hi, I was working on thread pool, which I used std::vector to implement the pool. [CODE] private: std::vector <handlerthread*> _pool; handlerthread* temp; void threadpool::addWorker() { handlerthread *temp; temp = new handlerthread(this); int x=_pool.size(); temp->start(&x); _pool.push_back(temp); } handlerthread* threadpool::getIdleWorker(){ int idx=-1; for (int i=0;i<_pool.size();i++){ temp=(handlerthread*)_pool[i]; //SIGSEGV HERE if(temp->isIdle()){ idx=i; break; } … |
 | I'm having an issue with the elimination portion of my Gaussian Elimination problem. The program crashes while running, I can't figure out what is causing the wrong rows to switch, and why it is not eliminating correctly. [CODE]void Matrix::gaussianElimination() { int i, j, max; for(j = 0; j < N; … |
| | I have a login form(Form1). Which has two text box(textBox1,textBox). when i clicked the Login Button another new form(Form2) is opened.This new form is a MDIPARENT form. I want to set the text of a lable of a new child form of this parent form which is same as the … |
| | I'm trying to write a small text editor in wxWidgets, using wxDev-Cpp. So far, all is well. However, for the life of me I can't work out how to print (As in, onto paper). As far as I can deduce, I need to use the wxPrinter class. Browsing the wxWidgets … |
| | I am using wxDevC++, because I hate code::blocks and litecode doesn't do it for me, so the error I get when I try and compile is: cannot find -lwxmsw28 ld returned 1 exit status C:\Dev-Cpp\Makefile.win [Build Error] [Output/MingW/Project1.exe] Error 1 I've looked high and low, and I cannot find wxmsw28.lib … |
| | im having a problem...i have a program to count number of senteces one inputs..the words and asking for a letter. The end of "\\close count" works fine...but for some reason the sentence and word programs doesnt work. could anyone please check this out. I think Iam missing something. I have … |
| | Hello all. I've completed both a Winsock server, AND a Winsock client using C++. The problem comes in when I attempt to bind a socket to a remote IP address. I get the message "Unable to bind to "IP address" port 80. I know for a fact that both the … |
 | Hey! I was writing my code, and just became wondering if I get a memory leak here. The program has a function which checks and creates a "Time" object, which simply includes integer values for hours and minutes. It returns the Time-object created to the main code. The thing is, … |
| | I am building a simple script editor which I want to function like Notepad, but highlight the scripting language's keywords blue and comments green, like what most IDE's do. I've got my application to essentially match Notepad using the built in EDIT window's class name, but I cannot get specific … |
| | Hi all, So, I'm a real newbie at this, and I don't even know where to start really. I'd appreciate some help. I've downloaded Allegro 4.9 onto my computer (running Windows Vista), and I want to use it with Code::Blocks IDE. I've tried many a google search, but none of … |
 | As-salaam-o-alaikum i hope all fine. a) What is Static Polymorphism? Write its alternative name with a simple example with code. b) What is Dynamic Polymorphism? Write its alternative name with a simple example with code. c) What is the main difference between Data Hiding and Data Abstraction? How we achieve … |
| | I want to make a 3D game and I don't know what to use OpenGL or SDL?  |
| | Hi All I'm using the QClipboard class provided by Qt. I'm trying to create a QList that holds the last twenty items that have been copied. I am declaring the list as follows: [CODE] QList<const QMimeData*> *copiedList; [/CODE] I am creating the list as follows: [CODE] copiedList = new QList<const …  |
| | Hi everybody! I'm a newbie to C++ and I need some help to improve my skills in c++. *When you make input data "cafe monde" into a string variable, the variable only accept "cafe" and not the white space and "monde". What should I do to retrieve white spacem "monde" … |
| | Im trying to learn c++ loops and structures with the c++ primer plus book. Here is the question no6: [url]http://books.google.com/books?id=zuyAIZ9ZIskC&pg=PA205&lpg=PA205&dq=c%2B%2B+primer+plus+programming+exercise+how+many+cars+do+you+wish+to+catalog&source=bl&ots=mbyXM-wZBZ&sig=o0nBYx-ZkCShRJztCVoFTy4S1eM&hl=en&ei=BqxQTMKVK4eosQPi_bynBw&sa=X&oi=book_result&ct=result&resnum=1&ved=0CBIQ6AEwAA#v=onepage&q&f=false[/url] My current code: #include <iostream> #include <string> struct car { std::string carname; int yearmade; }; int main(void) { using namespace std; int zero = 0; int vb2 = 1; int … |
 | Hi everyone I am currently learning C++ and i am writing lots of small bits of code to get praticed in coding in C++. i am working on a user system atm which takes a signup from the user and puts it in a text file so the user and … |
 | DaniWeb plans to interview Bjarne Stroustrup, the designer and original implementer of C++ and the author of many books on C++. This is truly a treat and rare opportunity for us as a community to talk to the father of C++. As the new editor-in-chief of DaniWeb's News and Reviews … |
| | im a computer course student and needs help about the program using loop and gotoxy. Where in we have to create a program that will display the image below. * ** *** **** ***** NOTE: The program will accept a value (an integer) for the length of the triangle. (The … |
| | When I tried to compile my code, I got this in the log: child 2136(0xD8) died before initialization with status code 0x1 *** child state waiting for longjmp *** child state waiting for longjmp Resource temporarily unavailable C:\Users\Collin\Desktop\Programming\Makefile.win [Build Error] [HW8P1Class.o] Error 2 This is the file that seems to … |
| | [CODE] #include<stdio.h> #include<conio.h> #include<stdio.h> void maketree(struct node**); void inorder(struct node**); struct node{ struct node *left; struct node *right; int data; } void main() { struct node *root; root=NULL; printf("Enter root"); maketree(&root); preorder(&root); getch(); } void maketree(struct node **root) { int num; struct node *temp; if(*root==NULL){ //printf("Enter number"); scanf("%d",&num); temp=(struct node*)malloc(sizeof(struct …  |
| | Hi all... I tried the following code in my Turbo C++ .. [CODE]int j=5; cout<<++j + ++j + j++;[/CODE] and got the result 20, as expected. But, when I replaced the code and assigned the same to another variable x, it gives result 21. ie, [CODE]int j=5,x; x= ++j + …  |
| | Hi guys, i try to write a containment program with Date and Time classes, i have problem in operator loading in Date_Time.[CODE] class Date{ short d, m ,y; public: Date(); Date(short date, short month, short year); ~Date(); short Day() const; short Month() const; short Year() const; };[/CODE] [CODE] Date operator+(Date … |
| | I am rewriting in Visual Studio 2008 c++ an application written in VB.NET that successfully connects to an oracle 10g database using OracleDataAccessClient.dll. I am trying to utilize the same dll in the c++ app though very unsuccessfully. In the project's Property Pages, I have successfully referenced the dll. In … |
| | how to make our c++ application bootable ? so we can boot from usb .... ? please help my friends i have searched a lot on internet but couldn't find appropriate thing ? thanks in advance ?  |
| | Hi.. I would like to use microsoft visual studio C++ 6.0 to build a execute file to detect whether network drive is connected and ready to used.. can anyone of you teach me how do I do this..?? my situation is I have 2 PC connect using LAN.. PC A … |
| | Hi! I created a primitive login system and am wondering if I could somehow not show the actual password and instead asterisk. Here is the code : [CODE]#include<iostream> #include<string> #include<vector> using namespace std; int main() { string username; string password; cout << "Do you want to register?" << endl; cout …  |
| | Please note that I mean overlapping windows in a literal sense, not in the DWSTYLE sense listed within this very function. I've been having this problem for quite a while now whereby I create a number of windows using the above function and have been having issues with the main, … |
| | Dear friends ? I have searched a lot on net but i couldn't get any best articles.. I want to use mysql in my c++ applications . please provide a detail procedure for using mysql as database in c++ ? thanks in advance ... ? |
| | Hi guys, pls somebody tell me the detailed concept of containment in c++. its urgent pls.................. |
| | I just recently finished my CIS101 and 201 classes for C++. My instructor says i show alot of promise and i really enjoy coding. but here is my problem: The semester is over and this next semester i won't be taking any CIS classes(need to get some general edu out … |
| | ill show the problem in the book first then ill tell you what i know. ___________________________________________________________________________ Then following formula gives the distance between two points (x1,y1) and (x2,y2) in the Cartesian plane: √ (x2-x1)^2 + (y2-y1)^2 its the distance formula..hard to type on here Given the center and a point … |
| | how to make a simple password lock in c++?? i want a alphabetic lock btw thanks for helping |
| | I started to do some reading about template, found interesting example [code] template <class T1, class T2> bool GetItUP (T1 a, T2 b) { return (a>b?a:b); } [/code] And the way to use it: [code] int _tmain(int argc, _TCHAR* argv[]) { int a = 20; float b = 23.90; GetItUP<int,float>(a,b); … |
| | Hello all! So basically I start off with one array, then I run a function that takes 3 floats, puts those 3 floats into a temporary array, then it returns this new temporary array and where I call this fucntion, It looks like this: [CODE=c++] float array [] = { … |
| | Hi, I'm very new to C++ and i'm trying to find the best way to solve this problem: First, i want my program to generate a random 6 digit integer as a variable (i have this part done).This random integer is the variable [B]x[/B]. After that integer is done, the … |
| | Hi , I am trying to call c++ exe from java applet.For this purpose am using processbuilder.My code is as follows ProcessBuilder pb = new ProcessBuilder(s); Process process = pb.start(); final InputStream is = process.getInputStream(); OutputStream out = process.getOutputStream(); PrintWriter pw = new PrintWriter(new BufferedWriter(new OutputStreamWriter(out))); pw.println(1); pw.println(1 +"" +2); … |
| | Hi Guys I need to compile and run a c++ program from java using Process a = Runtime.getRuntime().exec ("g++ -g function.cpp -o function"); Process b = Runtime.getRuntime().exec ("./function"); the problem is that the output I get from the c++ program is not correct but If I compile and run it … |
| | im trying to learn c++, so i stumble upon this programming exercise that asks the user to make a program that asks for 2 numbers, assuming that the second number is always the biggest in value, and adds all of the numbers in between the numbers entered including the entered … |
| | Just recently, I have upgraded from gcc 3 to gcc 4.5.0. However, when I try to compile a basic "hello world" example in c++, I get the following warning: Info: resolving std::cout by linking to __imp___ZSt4cout (auto-import) c:/mingw/bin/../lib/gcc/mingw32/4.5.0/../../../../mingw32/bin/ld.exe: warning: a uto-importing has been activated without --enable-auto-import specified on the c … |
| | 1. My bigInt multiplication [B]does not work correctly [/B]it gives me the wrong output. 2. Also how do i modify the class BigInt to process both positive and negative large integers? Merci beaucoup to anyone that helps! Here is my code BigInt.h [CODE]/*-- BigInt.h ------------------------------------------------------------- This header file defines the … |
| | Hello all! I am trying to create a simple app that takes something from an mysql database and prints it, I had some problems with the libraries at first, but now it compiles and shows me the black console window, but then suddenly it gives me some errors and in … |
 | Hey, i have read "Accelerated C++" and i am "soon" done with "The C++ Standard Library". I would like to learn about Windows Forms Applications or something similiar where i can start creating more useful programs. Can anyone recommend anything? Is it too early for me to jump to this? |
| | I am learning stacks, and I am trying to get this program to work. I have to be able to add large integers such as 9999999999999999999999999 by pushing all the numbers on the stack and then adding them up. Currently it works with small numbers but large numbers it crashes. … |
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