51,593 Topics
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| | Hi, just got a question involving the use of MVVM. [BACKGROUND DETAILS] I'm using C#, WPF and MVVM Im using the templates provide in this [URL="http://msdn.microsoft.com/en-us/magazine/dd419663.aspx#id0090102"]MVVM article[/URL] [MY QUESTION] I have created a new View, that displays a textbox with button and on a pressing the button get the value … |
| | Hi, I was implementing the Exampler / Prototype pattern just to brush up on C++. Couldn't figure out how to do the cleanup at the end. Problem is deleting all the prototypes from the map in base class at the end. I.e. deleting all stored pointers in [ICODE]Animal::examplesPtr[/ICODE], which is … |
| | [CODE]#ifdef _WIN32 #include <windows.h> #endif #include <iostream> #include <vector> #include <string> #include <SDL/SDL.h> #include <GL/gl.h> #include <GL/glu.h> using std::vector; void error(const std::string& s) { #ifdef _WIN32 MessageBox(NULL, s.c_str(), "An error occurred", MB_ICONINFORMATION | MB_OK); #else std::cerr << s << std::endl; #endif } [/CODE] That's my problem... [CODE]1>------ Build started: Project: … |
| | Ok, I've been trying to run this program on Borland C++ (Version 5.0A). The program is a Point of Sale program. I keep getting the errors "expression syntax at (121,26)" and "If statement missing ) at (129,6). Try as I might, I can't seem to fix the errors. Help? [CODE] …  |
 | Hi guys: I created this program that will read into two files and compare a number from one file into the other and if they match, it will print out some information. I ave two if statements and it seems that the second one can't be read. I tried putting … |
| | I ma brand new to templates and I have been given an exercise to reverse the elements using vectors which I did perfectly. But I need to include the template thing which I tried my level best to understand and do but still I am getting many errors. Any help …  |
| | What is the difference between a stand-alone and a member-function operator? |
| | first my task was to write this program that checks that string t contained in string s or not and i successfully made it and now i have to change this program a little bit and now i have to use a bool function in this program any one can … |
| | I am finishing up this program and need to find the GCD using euclids formula. I am attaching my code and was seeing if anyone could show me what is wrong. I am also sending the instructions just in case you need it... [code] //Programmed by: Bryan Kruep //Date: 2/22/2010 … |
| | i keep getting this error in my main.cpp [code]main.cpp:17: undefined reference to `Game::Game()'[/code] this is the code i have pertaining to the error [code] #include "Game.h" #include<iostream> #include<cstring> #include<iomanip> #include<cctype> #include<fstream> #include<string> int main() { ifstream din; Game output; output.fillGame(din); return 0; } [/code] i doubt it but just in … |
 | [code] class A { virtual void func()=0; }; class B : public A { void func (); }; class C : virtual public B { void func(); }; //I receive an A* pointer through a function in an LPARAM type argument //and i must downcast from an A* to a … |
| | I need to take an input file that contains name listed like: John Henry Mary Baker and create an output that looks like: Baker, Mary. Henry, John. Right now my output is just ,. ,. ,. ,. ,. ,. I can't use any global accesses, or a character processing alogorithm. …  |
| | Hi All, I want to register the .dll files in my setup project. I am creating the Setup project for installing it on 64 bit Windows 7 machine, And I have successfully installed on 64 bit Machine. The issue is, while running the application installed on the 64 bit machine, … |
| | Hi, I am working on this code: [CODE]#include <iostream> using namespace std; send(to, from, count) { register int *to, *from; register int count; { register n=(count+7)/8; switch(count%8){ case 0: do{ *to++ = *from++; case 7: *to++ = *from++; case 6: *to++ = *from++; case 5: *to++ = *from++; case 4: … |
| | Im trying to read from a file using classes and objects. i keep getting this error [CODE]main.cpp:16: error: no matching function for call to ‘Game::fillGame()’ Game.h:41: note: candidates are: bool Game::fillGame(std::ifstream&)[/CODE] here is code that goes with the error [CODE] //Game.h bool fillGame(ifstream & din); [/CODE] [CODE] //Game.cpp #include<iostream> #include …  |
| | [CODE] #include <iostream> #include <vector> #include <algorithm> using namespace std; class A { public : void getData(vector< A > &); void putData(vector< A > &); private : int x; char name[90]; }; vector< A > v; void A :: getData(vector< A > &Aref) { cout << "id = "; cin … |
| | Hi, I'm a beginner programmer and I have an assignement of making the radix sort! My plan is to make a helper function that will return the place value of a number. (for example, if the number is 127, then the function will return either a 1, 2 or 7) … |
| | Hey guys! I'm trying to write a program that involves a switch/case on Microsoft Visual Studion 2010. Unfortunately, some of my variables are not being initialized. I am a very novie programmer so please have mercy on me! Two of my options (1,4) are working but options (2,3) are not. … |
| | Hey everyone, I'm new at visual c++ and MFC Applications, and so I am going through Ivor Horton's Beginning Visual C++ 2010 to make a drawing application through Microsoft Foundation Class. I added menu bars for options, such as shape(rectangle, line, and ellipse) and select colors (black, red, blue green). … |
| | Hey everyone! I was recently assigned this program in class and have only finished about half the work but am already very confused. I was just hoping that some of you could give it a shot and share what kind of code you came up with. Well here it is …  |
| | I keep getting an output of zero, I don't know what's wrong.. #include <iostream> using namespace std; double determineCommissionRate(double totalCommission, double totalSales); double determineBasePay(double basePay, double yearsWorked); int main() { double yearsWorked, totalSales, totalPay, totalCommission, basePay; cout << "Please enter the number of years you have worked at this company" … |
| | Hello, I have a line on my image and i want to find the maximim grey-level value on that line . so i need to scan the line and pick the pixel with the highest value how can I do this? should I calculat the gradient magnitude ? Thanks in … |
| | Local * pLocal = *(Local**)0xE6EB54; // valid How would u interpret these in english i understand it has to do with a pointer to a double pointer? Local * pLocal = (Local**)0xE6EB54; // not sure if this is even valid if the above is valid as well how would u …  |
| | What are the most useful keyboard shortcuts for visual c++ 2008? |
| | I am doing a program involving an unsorted list of names that I have to turn form Firstname Lastname into Lastname, Firstname. So I wrote the main program, and my instructor told me that under my getList function, to retrieve the data just do data >> first and data >> … |
| | Hi, i need to write a code which can convert a raw image to anyother desired format like BMP or JPEG etc. |
 | n windows I used GDI+ to capture a region of the screen. Is there something similar for linux? I want to do ScreenCapture(Top, Left, Width, Height); and save it to a file (png or something). What's the easiest way to do this? Thanks, Dave |
| | I am learning C/C++/oracle/Unix? I am thinking of developing some application on my own, but I have no Idea what else is required. If you take an example of C++.I have very basic knowledge of it(data types, oops concepts,vectors,file handling,exception handling etc) I am not an expert though. I have … |
| | I'm making a project in c + +. I am now creating help, so if you push a button or F1. but I do not know how to make this. can someone help me Thanks in advance jongen joeri |
| | [CODE]#include <iostream> #include <string> #include <cstdlib> #include <ctime> using namespace std; void displayCardFace(int value)// gives 10 value cards a face to make gameplay more realistic { if ((value >= 2) && (value <=10)) cout << value; else if (value == 1) cout << "Ace"; else if (value == 11) cout … |
| | Hello. I have been programming for a while now and am ok but for some reason i can never figure out weather or not to do something like this [CODE] code * c; c->something(); [/CODE] or [CODE] code c; c.something(); [/CODE] no where has explained that to me, but ive … |
| | I am trying to move a ball using time. What do I need to know to move the ball? How can I move the ball 20 pixel per second? [CODE]#include <allegro.h> int ballx = 320; int bally = 240; void ball(){ if(key[KEY_RIGHT]){ } else if(key[KEY_LEFT]) { } acquire_screen(); circlefill(screen,ballx,bally,5,makecol(255,255,255)); release_screen(); … |
 | OK I figured after looking at some of my top down style original application that I wanted to make it a bit more classy, and organized as well as simply just use a class to both keep familiar and give me dynamic options. I have ran into problems and cannot … |
| | So ive been trying to figure this out on my own and searching the books and the net and still no success. Can anyone give me some input with this thing. [code=php] #pragma once #include<iostream> #include<cstring> using namespace std; class hugeint{ friend ostream &operator<<(ostream &, const hugeint &); public: hugeint(long … |
| | [COLOR="Red"][B]//This is the main file[/B][/COLOR] [CODE]#include<iostream> #include<fstream> #include<string> #include "Books.h" #include"account.h" using namespace std; int main() { cout << "\tWelcome\t" <<endl; cout << "1-Login" <<endl; cout << "2-Register" <<endl; cout << "3-exit" <<endl; cout << "Please enter a choice: "; cin >> choice; switch (choice){ case 1: system ("cls"); cout … |
| | Hi people, I am a C4 Quadriplegic I use WiViK 3.1 desktop keyboard with word prediction called wordQ but I keep getting the same error. I have reinstalled it many times, I have up to date antivirus and spyware. [URL="http://www.wivik.com/description.html"]http://www.wivik.com/description.html[/URL] I host and design websites but know nothing about C++ … |
| | Dear friends; I write a stack template, the head file and the main are as follows; but when i test the push function, it give me the following error. i do not understand the reason. could you please help me out. 1>f:\computation\datastructure\stack template\stack template\main.cpp(31) : error C2664: 'Stack<T>::push' : cannot … |
| | I've been tasked with reading in multiple emails that are stored in a single archive file and then scanning it to find certain things. My problem now is that I seem to only be reading in the first of the many individual files stored in the single archive. The "archive" … |
| | Newton’s Law says that the force, F, between two bodies of masses M1 and M2 is given by f=k(m1,m2/d^2) Where k is the gravitational constant and d is the distance between the bodies. The value of k is approximately 6.67 x 10-8 dyn.cm2/g2. Write a program that prompts the user … |
| | I can't make my array work. I have never encountered this error before and I am a beginner programmer, this is my homework assignment. Please help! I really don't understand/know a lot of terminology, so it would be most helpful if you showed me how to change my errors. Thank … |
| | Hello! I'm just starting out with makefiles, and I'm doing something using SDL (it's a cross-platform window manager). For this project, I want to incorporate a makefile into it, but I don't know what to do. The tutorials for SDL say to compile the program, use this command: [CODE]g++ sdltest.cpp … |
| | Hi everyone, I am trying to create Tag Extractor which is much like Twitter's Trending topics or Google's Top searchwords. Input file consists of a collection of some 3000 tweets. Problem 1: I am using "Qt" as the front end.(Entirely newbie to qt). Using two "List View" controls. one loads … |
| | Hi, I am writing a piece of code for a student database. I have one abstract base class named student and three classes (physics student, biology student and chemistry student) derived from student. I want to overload the insertion operator (<<) so that at some point in main I can … |
| | hi i have this problem and i don't know where exactly i must search if you can pass any tutorials i'll be grateful thanks. Find Counter Examples that prove the following statements are wrong : 1-f1 (n) - f2 (n) is O(g1(n) - g2(n)) 2-f1 (n) / f2 (n) is … |
| | I was given an assignment to complete on database, i have created it and also works but crashes after executing once, check it friends and please help, if you can modify or make it works my time is really limited and am unable to find a solution, friends be graceful …  |
| | Hello, I am writing a prog with ASP in C#. I have 2 separate pages. on the first page there are 2 textboxes and a button. the first box is a validation check (a code) the second one is the ammount of money you want to withdraw (max of 1000) … |
| | In oreder to implement a routing algorithm , I need to maintain a router table that is to be updated .What data structur is to be used for this? Please help. |
| | I had posted this before. But I am more on the right track. The places that I need help with have something saying like "need something here" or "need to fix the way it is displaying" I can't figure it out. I also am not sure if the multiplication portion …  |
| | Hi please help. Any help would be appreciated :D I have to write a program to read data from a large text file, analyze it, and output the results of the analysis to a data file. there are two data files to process. Problem: Using airborne sensors that record GPS … |
| | Thanks for reading. I installed VS2010 after a drive crash, prior I had VS2005 and everything was fine. Now on compiling a C++ app that was fine previously I am seeing a couple of errors which I just cannot figure out. Error 1 error C1189: #error : This file requires … |
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