Software Development Forum

I've search the forums here and found a few other people with the same problem I have, but I'm not sure I understand the solutions that have been presented. I have a simple geometry calculator I'm working on as C++ practice. My program displays a menu and asks for the …

Hi gang, I've created an object array from a managed class. [CODE] array<MyDataType_Class^> ^Object = gcnew array <MyDataType_Class^> (3); Object[1] = gcnew MyDataType_Class; Object[1]->id = 1; Object[1]->surnmame = "Formen"; TextBox1->AppendText(ConvertToString(Object[1]->surname)); // Outputs "Formen" + [/CODE] The object works well and outputs expected results. However what i need is : [U]Calling …

Suppose you have a supermarket, and every item which belongs in that supermarket is stored in one place. Then you have sections of the supermarket like "Food & Cuisine", "Entertainment" and so on. The user of your program needs to be able to list every item within the supermarket, then …

Hi, I have a form where i can enter new product. In that same form i have listbox where i show the current product from the database. I want to know how to update that listbox as i enter new product into the database so that user can see the …

Hi, i'm doing a registration form and i have problems checking if the username exists in the database. [CODE] Imports MySql.Data.MySqlClient Public Class Admin_Reg Dim server As String = "Server=localhost;Database=escola_musica;Uid=root;Pwd=;" Dim con As New MySqlConnection Private Sub Admin_Reg_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load con.ConnectionString = server …

Hi, this is my first post, so any help or advicing is welcome. I have a form in which i want to show records from a database and create buttons for each record, the problem is that i need to point the buttons in diferent locations inside the form based …

Hi i'm making a function that will return make a series of strings and perform a function returning a value for each. I've stored the strings in one vector v, and the integer values in another v2. Then it is supposed to return the string that corresponds to the smallest …

i am new to VB.net. just want to check an id number in my textbox if its aldready existed in my database. this is my condition: if textbox1.text = ds.tables("employees").row(0).item("id") then msgbox("ID already exist") end if

I have a connection string for my SQL database connection called my.settings.GCRConnectionString which was created when I created my dataset for the application. I want to change the value of the connection string but it give me an error saying it is ready only. Is there a way to update …

I am trying to compare two arrays of objects to verify that they have the same values. It is returning false when it should be returning true. Im not sure what I am doing wrong when comparing the two arrays. Class : arrayObject [CODE]import java.util.*; public class arrayObject { private …

I have seen some people talking about it and my question is... I have a program that opens a input and output stream, when the program gets the message '#end' it should terminate the program. Does it really matter if I close the in-and output streams and then close the …

Hi i am doing a student grade lab where the student enters a grade they got on a test and they get a letter grade. My program only gives the user a F even if it should be another grade. This is my code. [CODE]strT1 = JOptionPane.showInputDialog("Enter 1st test score:"); …

the following program uses 2 arrays a & b of sizes m & n, both the arrays take values from user. third array is of size m+n. i hv to merge these two arrays into third one. but becoz of 1 error i m unable to do this. i hv …

Is there a library that's easy to setup and use with Visual Studio 2010 for AES encryption/decryption? I've been fiddling with CryptoPP and it's endless link errors and iterator_level_not_equal error messages for an hour now, so I think it's time to look for an installer or a new lib. Any …

Hello all, I am debugging a vb app for my company. I did NOT create this app. So far there is just one thing that has been bugging me, AxctlUSBHID.AxUSBHID. Heres the code and the error im getting for each section. There is only two errors. (1) [CODE]Private Sub InitializeComponent() …

Hi, I'm just wondering, why do we bother with function prototypes? Wouldn't it be better if we just defined the functions before the main function instead of having a function prototype and a function definition in separate areas? For example, instead of the following: [CODE] #include <iostream> using namespace std; …

hi all Here i am trying to a code in which the run method is not being called when the thread is started.. Can anyone help me please.. Here is my code [CODE]import java.awt.*; public class Games extends Frame implements Runnable { int x=250,y=470; Thread t=new Thread(); Games() { setVisible(true); …

Hi, Can someone please help me with understanding the differences between the 2 please: [CODE] Shape* rectangle = new Shape; [/CODE] And [CODE] Shape rectangle; [/CODE] I know that with the pointer you use the "->" operator to access the object methods, and with the other one you use the …

Hey I want to create a JAR library but not sure how to in MyEclipse. Im currently doing it manually using jar command but I cant seem to get it correctly The library code is: [code] public class LibAdd { public static int addtwonumbers (int a,int b) { return a+b; …

[CODE]class DoWhileDemo { public static void main(String[] args){ int count = 1; do { System.out.println("Count is: " + count); count++; } while (count <= 11); } }[/CODE] can someone please rxplain to me how does Do while statements work? and how can i use it in my program?: [CODE]public static …

im trying to do a program like this: i need to do a program like this: Automatic Teller Machine [B] Balance [D] Deposit [W] Withdrawal [Q] Quit select you OPtions: once i have chosen an option then i should proceed here if i choose b: YOur Balance is __ if …

Hi, I have this sort of problem whenever the datatable has an empty cell, it shows cannot find column 6 or depending on the number of the datatable column cell. Why does this happen and how can I resolve this? Thanks

Hi, I'm not quite sure if there is a thread for Eclipse related query separately. But since this is a java related one. I'm posting it here. Is it possible that i can have PMD check run on a project by default ? Instead of clicking on my source file …

I know how to pull data from a db and present it in a textbox in a form my question is, how can i pull data from a db and present it in a datagridview? and another thing, once a certain row is double clicked, new form will show and …

Hello All, I have 3 combo boxes on my form 1. Doctor Start Time 2. Doctor End Time 3. Doctor Appointment Duration I want a 4th combo Box that will Start from Doctor's Start Time upto Doctor's End Time with the interval of Appointment Duration eg. Suppose the Start time …

Hi, How can I create an array of a class that I have declared? I have this class named parts with properties of frame, engine and date, and i want to know how could I store them in an array .. thanks

Hi, I have this fileupload in my program and I want to set it's extension to .xls only, Is it possible? If yes, how can I set it so it's file filter will only be .xls? Thanks

Greetings all. I'm preparing for my java data structure/algorithms class and I'm starting a personal code repository of sorts and such. I started out with c++ and my question is this: I'm implementing a controller class and a class full of sorting and search methods in java. Instead of copying …

Requesting help with my homework problem. error: conversion from 'std::string*' to non-scalar type 'std::string' requested The lines with the error are under the comments. Thanks. [CODE] #include <QtCore/QCoreApplication> #include <iostream> #include <cstdlib> #include <string> using namespace std; typedef string* stringPtr; string* addEntry(string *dynamicArray, int &size, string newEntry); string* deleteEntry(string *dynamicArray, …

Why does it load my DLL but the pointer to the Proc returns 0? It loads the DLL and says "DLL Loaded" but it just won't say "Function Found." Help me please :)? [CODE] #include <windows.h> #include <iostream> //DLL Function: void DLL_EXPORT Theading(HANDLE hThread, DWORD ThreadID, void* FunctionToPass); typedef void …

I have this line of code (repeated with a bit of change) [CODE] if (ropeChosen == 1){ g.drawImage(rope, 321, 0, 10, 505, this); g.drawImage(rope, 521, 0, 10, 704, this); g.drawImage(rope, 721, 0, 10, 703, this); g.drawImage(rope, 921, 0, 10, 702, this); if (p.idol2){ g.drawImage (idol, 275,485,100,100,this); }else{ g.drawImage (snake, 300,505,50,100,this); …

Hello I'm tring to declare a BinaryOut type of object in a Java web project but it doesn't seem to work. I've imported the same libraries I used in a standard Java project so I don't know what's wrong. Any tips????

I would like to write Perl script to read just first line of a file & calculate the length of second field which is comma separator file. For example - 1001,abcd,9999 1002,xyz,0001 expecting result - 4 (character length of second field from just first line i.e. abcd) Can somebody help …

Hey all, I'm trying to make a DLL that can be used in Pascal to enable multi-threading. I've decided I want to export Threads in C++ to a DLL. Before I make DLL's I usually write the program first to test everything then I convert it to a DLL. [CODE] …

Hey guys, So, I have a CheckedListBox that will be used to choose what columns they want to select from a database. Is it at all possible to display it in the format of [Table Name].[Column Name]? So far I have this: [CODE]con.Open() theQuery.Connection = con theQuery.CommandText = strColumns theAdapter.SelectCommand …

Hey all, Apologies for this question, as I imagine it will be very easy. I'm creating a form that will be used to update fields in a table. I don't want the user to be able to update primary keys though, so I'm trying to disable the textbox so it …

Hi, My title may be wrong but I would like to explain this process that I need here, Here is my Process, I already have imported excel file and inserted it in the datatable, and then I also validated it's format before inserting it in the database. Now Here is …

Hey guys! I need to make a very simple login-like app. I could just write an program that would accept one masked text-box and verify its contents with a predefined string, but I want something more secure. How to make it encrypted, like web login forms? I've read a bit …

I have a static class, with all methods and fields static. My methods in that class are going to use a static field declared in that class. I want that static variable(which can not be made final) to be initialized with a value taken from a database when that static …

Hi, I just want to know how can vb.net validate the format of a certain string for example, i have a string with 2011/13/02, and I want to check if it's format is in yyyy-dd-MM format,. how can this be done? Thanks

Hi, Want to remove duplicates from a list so if my list contains: [CODE]www.test.com test.com mytest.com[/CODE] I want the final list to look like below(only selecting the domains with www from the duplicate in front) : [CODE]www.test.com mytest.com [/CODE] I have this linq but it seems to ignore all the …

Is there a simple way to get a list/array of all the predefined colors? (without listing them all individually) ? It seems as though the colors are properties of the class "Color" rather than an enumeration.

Hi guys i have a problem with my code :[CODE]#include<stdio.h> #include<string.h> #include <stdlib.h> #include <conio.h> struct blahblah { char id[11]; char name[30]; float gpa; }lol[100]; int main(){ int count = 0; char name [50][100] ; for(int i =0;i<=4;i++){ printf ("Student %d\n",i+1); printf ("ID: "); gets(lol[i].id); printf("Name: "); gets(lol[i].name); printf ("GPA …

I have a kind of doubt, suppose I have a class like this: [CODE] public class AA{ public static createUser(String a, int b){ User usr=new User(a,b); BB.storeUser(usr); } } [/CODE] Now, if multiple threads call this createUser() method of this class at the same time, will it cause any kind …

Im using MIPS and im looking to display the numbers between two other numbers. For example; $t1 = 5 $t2 = 9 Display = 56789 Ive only just started learning the language so im still struggling to get used to it. Thanks

HI im a student and our professor asked us to convert a number into word: example: input= "1" output="one" i need to have numbers from 1-10,001 so my program will end up very long if i only use if else statement i know that there are other methods other than …

Hello Friends, I need to retrive a part of the value present in combobox. Suppose the ComboBox stores the Time values in it. eg. 00:00 00:30 01:00 01:30 Then how can I retrive only the hours value or the first two values separately from the Combo Box. Is there any …

Hi folk. Can I use join() method in implementation of run(), like this: [CODE] public class MyThread extends Thread { @Override public void run() { int timeout = 30000; // here is some heavy work join(timeout); } } [/CODE] Is above thread terminated after timeout milliseconds if task takes longer …

Hi all when I run commend : "C:\LJava\project\KTest2>java -cp .;org.freixas.jcalendar;.\build components.KTest2" my code runs well I then made a jar file with the command "C:\LJava\project\KTest2>jar -cf KTest2.jar .\build\components\*.class" my MANIFEST.MF 's content is : Manifest-Version: 1.0 Created-By: 1.7.0 (Oracle Corporation) Main-Class: components.KTest2 but when I run command "C:\LJava\project\KTest2>java -jar KTest2.jar" …

I want to create a JFrame and add panel to it ,the problem in drawing line in this panel [ICODE] package panel; import java.awt.Graphics; import javax.swing.JFrame; import javax.swing.JPanel; public class Main { public static void main(String[] args) { JFrame window = new JFrame(); window.setSize(200, 200); window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); Graphics g =null ; …