Software Development Forum

hello i have a program that is written by Borland C++Builder 6 it is a program for writing binary files using ofstream. but when i ship this program to Borland C++Builder 2006/2007 and compile it,the run time of program increased very much. for example you can test this standard code …

I'm trying to implement critical section using objects listed in this article: [url]http://www.mycplus.com/tutorial.asp?TID=290[/url] Somehow, it doesn't work like intended, or maybe I do something wrong. Basically my concept looks like this: [code=cplusplus] DirectoryReader::DirectoryReader(char* p_sConfigPath) { GetConfig(p_sConfigPath); if( hReaderMutex = CreateMutex( NULL, FALSE, "ReaderMutex") ) cout << "Mutex created!" << endl; …

For my computing project last year I created a simple booking system in Access 2003 with a little bit of VBA to enhance it a little. However this year I need to improve it. One of the main problems I found with my booking system is that double bookings can …

dear guys... i have a code but it runs so slowly i would it to make it fast...can u help me?? what should i do??? [code] Var2 = 0.1 For y = 0 To jlhPro - 1 Do Var1 = Var2 For z = 0 To thn - 1 kata …

Hi there, I'm trying to open up a text file read info from it, alter it and write back the alterations when a user clicks on the save button, but I've hit two issues:- 1) I can't open the file for write access as I don't have permissions - can …

Hello everyone, My project consists of reading 2 lines of integers separated by white spaces corresponding coefficents and exponents, each line representing a polynominal. I have to add both polynominals and subtract them. I have made a linked list class to hold each coefficent and exponent in a node. The …

I have the function below in three base classes, one base, then one derived, and another derived from the second. I'm getting external resolution errors when I try to build it. [code] virtual void printtostream(ostream& out); //Since it is a virtual function the above was not defined in any of …

hi i have just started with c#.I would like to know what could be done with c# and how it is different from other languages. thank u:)

can someone send me the code for selecting the items listed in combobox on keypress. Like My combobox consists of following items: Bombay. Chennai. Delhi. Currently am able to select the item with the help of mouse. how can i select " Chennai " from typing 'c'? Thanks in Advance.

sir, question.. can i get the exact len of string when quering? because i have two format in my TransID. The one is the 10digit for the MSAccess and the another is the 11 Digits in my MySql. So if i update all in the MySql database the problm is …

Hello, I am a newbie and trying to pass a 2 - dimensional array to a function in C++ from main(). Then, [B]once inside that subroutine[/B], I want to [B]change the contents of this 2D array[/B] and be able to [B]access the changed elements of this 2D array later[/B] in …

I am trying to write a shared library using C but need to call some C++ functions. So I have created a shared library containing the required C++ functions. How can I call those function from C code, I tried dlopen() and dlsym() in the C code. It creates handle …

I have a "two stage" inheritance piece I'm writing. The overall class is telnumber, the worknumber is derived from telnumber, and billnumber is derived from worknumber. The problem is in in my billnumber.cpp. In the main there are two lines referring to the billnumber class with only 4 parameters, and …

Hi, I am writing a program where I want the user to be able to e-mail me feedback, so I have downloaded javax.mail and I'm trying to send myself an e-mail to test it out. I have Yahoo Mail Plus. Below is my code, which I tweaked from one of …

i think i've chosen the longest way to add the deletion onto my system, is there any other way which is more efficient ? and im wondering why only mPane.JTextFields are working, but the rest like lPane.JTextFields aren't working ? [CODE=JAVA] . . menuItemDelete = new JMenuItem(); menuItemDelete.setText("Delete"); menuItemDelete.setMnemonic(KeyEvent.VK_D); menuItemDelete.addActionListener( …

can i have more then one JTextArea and JTextField for one inner class (MyUndoableEditListener())? [CODE=JAVA] . . MainTabbed mPane = new MainTabbed(); . . . mPane.area.getDocument().addUndoableEditListener(new MyUndoableEditListener()); mPane.locField.getDocument().addUndoableEditListener(new MyUndoableEditListener()); mPane.dateField.getDocument().addUndoableEditListener(new MyUndoableEditListener()); mPane.ndBuddyField.getDocument().addUndoableEditListener(new MyUndoableEditListener()); mPane.depthField.getDocument().addUndoableEditListener(new MyUndoableEditListener()); mPane.firstBuddy.getDocument().addUndoableEditListener(new MyUndoableEditListener()); mPane.weightField.getDocument().addUndoableEditListener(new MyUndoableEditListener()); mPane.timeInField.getDocument().addUndoableEditListener(new MyUndoableEditListener()); mPane.tOutField.getDocument().addUndoableEditListener(new MyUndoableEditListener()); mPane.startTimeField.getDocument().addUndoableEditListener(new MyUndoableEditListener()); mPane.sTimeField.getDocument().addUndoableEditListener(new MyUndoableEditListener()); mPane.bTimeField.getDocument().addUndoableEditListener(new MyUndoableEditListener()); mPane.startField.getDocument().addUndoableEditListener(new …

currently i am facing a problem for these method. when my program copying or cutting a selected text and paste to another selected area, unexpected result, it paste the selected text to all of the fields and areas of my program. is there anyway to check current selected area or …

[ICODE]/* * To change this template, choose Tools | Templates * and open the template in the editor. */ /** * * @author beelzibub */ import java.awt.*; import java.awt.event.*; import javax.swing.*; class ChessBoard extends JFrame implements MouseListener, MouseMotionListener { GridLayout Board = new GridLayout(8, 8); GridChessBoard brd; int xMove, yMove, …

Please help. I really need to find out how to get a data value from one for onto another form. For example I put a value in an edit box in Form1 and I want that same value to be in Form2, but if I were to chage the value …

Hello everyone, This program compiles fine and runs fine in Eclipse(C++ IDE) but when I compile it in UNIX and Visual Studio its fine but when I run it, it gives me an error. For Unix is segmentation fault The problem is when I initialize VNT, it calls Matrix and …

Hello Java powers that be, I've implemented a JTable that I can add/delete rows of information to/from, but I can't actually see the changes until I do something stupid like resize the columns. I currently use a "fireTableCellUpdated(row, col);" doo-hicky in my AbstractTableModel(whenever data is changed) that I thought would …

As I write my code, I am realizing there are numerous places where a type int could easily be substituted with a type char. Because type char uses less memory than its int counterpart, I am curious why people don't prefer the former more often. for example, it's not uncommon …

Hi all, i was hoping some on could help me solve this problem i am having:i have been going over it for the past two hours but can not find the mistake\s. I have three files i am working on 1 header and 2 cpp ones(implementation of header file and …

Hi there: I am trying to output a single variable to a binary file, but couldn't get it done correctly. [code] result = 17.0; if ((OutFp1 = fopen("myfile.bin", "wb")) == NULL) { Application->MessageBox("File can't open.", NULL, IDOK); return; } fwrite(&result,sizeof(result), 1, OutFp1); fclose(OutFp1); if ((InFp15 = fopen("myfile.bin", "rb")) == NULL) …

Hi guys..i've been cracking my head for the past few days, i can't seem to print out the result of my multiplication..I'm using MASM615..Can anyone give me some pointers ? [CODE].MODEL MEDIUM .STACK .DATA ;================================== ONE DW 04DEH ; First signed number A = (-79H) = FF87H (2'Compliment form) TWO …

Hello! I have a little problem. I am a relatively new Java learner, and I just finished a little project for a friend. I use an IDE, called JCreator, that solves basically all of my needs without ever having to touch the command line. Since all the coding I've done …

[SOLO] Write a program that uses a two-dimensional array to store the highest and lowest temperatures for each month of the year. The program should output the average high, average low, and the highest and lowest temperatures for the year. Your program must consist of the following functions: a. FunctiongetData:Thisfunctionreadsandstoresdatainthetwodimensionalarray. …

Heloo, i have just encountered a problem in comiling a module of a program made by python and um not experienced in it, where should i run the module, in the command prompt of windows or in the shell, i dunno wheather i post this thread in the right place, …

Hi, i need some help about using swap() functions i am using this code: [CODE]var x: integer; begin x := $11223344; x := swap(x); edit1.text := inttohex(x); end; [/CODE] this code is working fin its swap like this: '22114433' but if i pud/add byte on like this: [CODE]var x: integer; …

[CODE=c++]#include <iostream> using std::cout; bool help = 0; bool expl = 0; int main(int argc, char *argv[]) { for(int i=1; i + 1 <= argc; i++) { if((argv[i] == "-h" | argv[i] == "--help" ) && help != 1) { cout << "This is an experiment for parsing arguments.\n" << …

Hello, I have a problem with calling a staticmethod from another staticmethod when I try use dictionary {} to handle. My code is very basic, but in the future I will add many other static method: [CODE] # -*- coding: utf-8 -*- import sys class DateFormat(): """Class to format and …

Hi everyone, I'm new in this forum. By the way it's not longtime since I started learning python. After a couple o months of studying and tutorialing I'm now nearly finished with my first application. I've used Tkinter as GUI and there's one thing that's making me nervous: I want …

I wonder something. I have a Form with Vertical ScrollBars. When running this code below that are inside a buttoncontrol when the scrollbar is at the top of the Form, the Form Scroll downs a bit, perheps 5-10 cm. This is because I set button1->Enabled = false; [I](I don´t know …

I am doing a simple program that will add elements to a static stack using structures but Iam failing to implement it. The proram accepts input the first time but then crashes after that. Here is my structure declaration [code=cpp] struct stack{ int top=1; int values[4]; }; [/code] the definition …

Hello everyone, I have got some questions and i am really hopping someone could help me out with them. I have a class privately encapsulated in another class. Now, I'm trying to make an object of it in my testDriver but I'm not quite sure how to do that. I've …

[code=cplusplus] #include <iostream> #include <string> using namespace std; int findNum () { int num; cout<<"You have 10 chances to guess the number that is generated by this program."<<endl; cout<<"All numbers generated are of positive integers"<<endl<<"Good Luck!!"; cout<<"Enter you guess "; cin>>num; return num; } string start (int guess) { int …

So.... I"m trying to use MPI_Bcast because it seems like the easiest way to take a multidimensional array (the full program has a 3-d one all filled out) and make it available to every process. The code below, however, does not work... 'grid' holds nothing but 0s when accessed from …

Hi all, I have searched about difference between KeyPressed and KeyTyped Events but still I'm not clear about that . One thing I have found is Keypressed is triggered first than KeyTyped . Please clarify me when these are triggered exactly . Which is appropriate to use for which purpose …

Right now this is my setup: I have these classes Point2 Point3 Vector2 Vector3 Ray2 Ray3 Both Point classes and both Vector are independent. Ray2 contains a Point2 and a Vector2 object, and Ray3 contains a Point3 and a Vector3 object. I have two questions. 1) Should I somehow just …

hello everyone. i need a bit of help in this project of mine which is due in 2 weeks.. here's what needs to be done, but i have no idea about the logic:( if somebody can help me with the pseudocode or algorithm, i could write the code maself.. [B]Write …

Can someone go through the following code whic generates shortest path for randomly generated processes. My code is generating a segmentation error when I run it, and I am unable to locate the bug. //This program implements the O(n) algorithm for finding shortest path for randomly generated processing times [code=cplusplus] …

hi, I develloping an engine but I have an small error and can't find it... I want the user the say with icon he wants to use for his program : [CODE] WNDCLASSEX wndclass; // ... wndclass.hIcon = LoadIcon(m_hInstance,MAKEINTRESOURCE(GetIcon())); wndclass.hIconSm = LoadIcon(m_hInstance,MAKEINTRESOURCE(GetIconSmall())); // ... void SetIcon(WORD icon) { m_wIcon = …

Hi All, Beginner programmer here with an easy question I hope. I want to be able to compare the value of the first item in a list to the second item in the list to see if they are sequential. so in this list: numblist = [1 , 2 , …

main.cpp [CODE] #include <windows.h> #include "Resource.h" HWND hWnd; LRESULT CALLBACK DlgProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam); INT WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { DialogBox(hInstance, MAKEINTRESOURCE(IDD_Main), hWnd, reinterpret_cast<DLGPROC>(DlgProc)); return FALSE; } LRESULT CALLBACK DlgProc(HWND hWndDlg, UINT Msg, WPARAM wParam, LPARAM lParam) { HWND hwStart, hwServer, …

Hello, I have a CListCtrl and a button to modify the selected row in the CListCtrl. My problem is that my list has several columns and I want to be able to select a row by clicking on any column of the row that I want selected. Now I can …

I'm trying to call this function requested times. All functions and variables are members of one class, access is public. So, I'm calling like this: [code] void MultiReader::CreateThreads() { unsigned int nThreadNo; for( nThreadNo = 0; nThreadNo < vDirectories.size(); nThreadNo++) { CreateThread( NULL, 0, &MultiReader::ReaderThread, vDirectories.at(nThreadNo).sDirectoryName, 0, NULL); } } …

[COLOR="Green"]hi there ...I am Debasish. New here and am wondering here and there thinking about what to do??? Is there any tech guru who can show me a way???[/COLOR]

I want to call a class file to return a boolean value. How do I call the method from my CodeBehindPage. I've tried something like this but it doesn't return the value from my Class file. [code]using System; using System.Configuration; using System.Data; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; …

How does "\b" and "\n" work together when they are placed next to each other in printf. For ex: Printf("\naa\b\n") The solution is "aa". I was wondering if anyone could explain me how/where "\n" is placed. Does the occurence of "\n" just makes the file pointer to transfer to the …

Can anybody help me to solve this problem? My program doesn't work as what it is required. Here is the question and my program code. Thanks. [CODE=c] /**Twenty-five numbers are entered from the keyboard into an array. Write a program to find out how many of them are positive, how …