Software Development Forum

Hi, I'm trying to locate a certain row in my datagridview, using textbox _textchanged event. Grid is populated with table having 2 columns as primary keys. With one column I have no problem, but using 2 columns I'm having exception . [code] private void dfSponsorname_TextChanged(object sender, EventArgs e) { try …

If I'm running a Do... Until or a For... Next loop in a button click event, is there a way I can allow the user to click the same button while the loop is running and escape the loop?

Hi, everyone. I am stuck in such a situation: When failing to open a file, of which the name is in Unicode, I need to show the user something like "Can't open file: \My Document\file-name-in-unicode.txt" by throwing an exception . I often use exceptions this way(is this a good way?). …

Hi guys, I'm a newbie in Visual Basic and I need some assistance. I have 2 tables in mysql: 1. stats (stats_id,statsno,statsName) 2.stats_det (stats_det_ID,stats_id,stat_DateAdd,stat_UserAdd,stat_DateModif,stat_UserModif) I have a form named status and from here I want to add a new record in the first table (stats). I've created the insert statement …

Dear Experts How to display picturebox as oval shape. Please help

can anyone give me a sample code of a while statement with more than one condition? please...

Hi I have problem to get data from tag (eg: <TEXT></TEXT>). For example the string is like this: [CODE]$string = "<TEXT> Some text </TEXT>"; if($string =~ /<(TEXT)>\s*(.*)\s*<\/\1>/g) { $result = $2; print $result, "\n"; }[/CODE] It works fine, but if the string is like this: [CODE]$string = "<TEXT> Some text …

I have a listView, in 1st column is are article names, in 2nd column are prices of these articles (data type of float). And I have checkBoxes. What I would like to do, is to count the prices in 2nd column of all selected rows. And then the counted value …

Hi, i am trying to develop a tool box for simple graphics...basically i want to give users an option to use a tool box and design basic drawings at run time...the drawings would be like simple network diagrams...some nodes connected to a backbone types... my friends (google, yahoo etc.) have …

I have been reading about pointers, which IS confusing. I'm sure there is a purpose, but I don't know why I need them yet. For example [CODE] [COLOR=Red]var1 = 23;[/COLOR] [COLOR=Blue]// assigning 23 to var1[/COLOR] [COLOR=Red]var2 = var1; [/COLOR] [COLOR=Blue]// assigning the value of var1 to var2[/COLOR] [COLOR=Red]var3 = &var1;[/COLOR] …

Gentlefolk, Totally new to the world of C C++, compilers and linkers. I am attempting to compile and build some demonstration application code which access BlueTooth devices. Have all the .C, .H files, also a .lib. Using the LCC c ide-compiler-linker, etc on Windows-32 Compile one module - no errors. …

Hi How Can I Change The Height of Rows in DBGrid ? Thanks.

In undefined cases, anything can happen, the program can crash, or unexpected results be thrown up. What happens is up to the compiler. In unspecified cases, the Standard has deliberately not defined the exact behaviour of a few things so that the compiler is at liberty to do as it …

[code=c] printf ("%d",EOF);[/code] This gives me -1 [code=c]scanf ("%d",&a);[/code] [code=c]printf ("%d",a) [/code] where a is int (as EOF is an int), this gives me some junk value [code=c]printf ("%d",getch());[/code] This gives me 26 I've always given the input as ctrl+z (that's right, na!) What's the correct value of EOF ?

Im trying to make the run.bat file read the .class files from the folder classes/src. But before I didn't package my .java files and the created .class files were found in /classes. But now that I packaged my .java files, the newly created .class files are being read from inside …

Hi guys, I understand the difference is that the params of ctor 2 are declared const with n being passed by reference. However, I don't seem to understand what difference having these params (n and a) declared constant with n being passed by reference makes? I mean, I'd understand the …

Hi, I am trying to make a sublime text plugin that will compile some C code, but it uses python for these plugins. I already have a method of using g++ for single files, but I was wondering if anyone knows how to do it for a make file, here …

Hi, I'm trying to find an open source project to strect myself with, I have looked on bitbucket and couldnt find anything, any suggestions? Thanks in advance.

How can I make windows execute a python script when a flash drive is plugged into the computer? Is there a way to do this with python or do I have to use windows?

I use visual basic 8.0 en MySQL. I have a connection witho my MySQL database "test" with Myconn. I have two table's : Rental Articlenr Articledis Articlerent 100 beerclass 15 200 wineclass 10 Stock Articlenr Articledis stock 200 Wineclass 25 So far i have this : [code]Dim con As New …

I know that ++a is faster than a++ because a++ has to first store the previous value of a at some temporary location and then increment a and then return the saved value, whereas ++a simply increments a and returns the pointer to the incremented value. Since, both a++ and …

Dear Experts I use following codes to display image from sql server. On this line of codes [CODE]Dim ms As New IO.MemoryStream(CType(row("user_img"), Byte()))[/CODE] this error messages appears [CODE]Unable to cast object of type 'System.DBNull' to type 'System.Byte[]'.[/CODE] How to get rid of this error message. This message appears because image …

I am working on getting a string into this function but there are already to many arguments. [CODE] char interface[10]; if (!(in = popen("iwlist %s scan","r"))) /*Need interface string here */ { /*to be added */ } [/CODE] I tried to add ",interface" after "r" but it said to many …

Hi guys. Can a variable be used outside the try block? [CODE]string responseString; char response; Console.WriteLine("1. If you would like to ... press A"); Console.WriteLine("2. If you would like to ... press B"); Console.WriteLine("3. If you would like to ... press C\n"); responseString = Console.ReadLine(); try { response = Convert.ToChar(responseString); …

i recently started typing the code for the program to convert a binary number to its decimal form and i got stuck when my compiler reported this error. this is what i have typed till now. [CODE]#include<iostream> using namespace std; #include<math.h> main() { int n,s=0,k=0,a,b,c; cout<<"\n\n\tPROGRAM TO CONVERT BINARY TO …

Heyloo ^_^ I've stumbled upon this code :D [CODE]#define VERSION_MAJOR 1 #define VERSION_MINOR 1 #define VERSION_PATCH 2 #define VERSION ((VERSION_MAJOR << 16) | (VERSION_MINOR << 8) | VERSION_PATCH)[/CODE] I've been searching for some time now, unable to understand what << 16 and << 8 does, and why. I converted VERSION …

I'm completely new to java and am trying to get some experience with programming java applets that can be opened from a browser. I was able to successfully open a simple "hello world" applet from a browser using the below javascript: [CODE]<script src="http://www.java.com/js/deployJava.js"></script> <script> var attributes = { code:'HelloWorld.class'} ; …

Okay, well I have to say I am completely stumped where to go from here. I am writing a media player and I am currently working on song indexing. I have figured out how to extract the song name and its complete path using os.walk(); however, I have no idea …

Hi boys, I am working for a job interview and I was writing a nice piece of cod in c++, partially copied and pasted. This is supposed to work but now i am obliged to use dev-c++ last version for windows, usually I just use gcc on linux and I …

How do I know what the process owner, who released it? Using Process funktion, and don't using WMI. [CODE]Process[] list = Process.GetProcesses();foreach (Process pr in list) { Process process = Process.GetProcessById(pr.Id); process. ??? }[/CODE]

I have a vbscript that uses a WScript.Shell instance and .Run("ffmpeg.exe -params",,True) to fire off a ffmpeg video conversion. When the conversion is complete, the cmd.exe window stays open at a typical prompt, and i was curious if it is possible to auto-close that child cmd window when it's done …

Hi Everyone hi was trying to call a different and Anonymous objects into my form but i can't reach to the right method tyo do that my matter here is falls under calling a tree view.... i mean any tree view !!! i was trying to handle this code but …

[CODE]/*manimbo_mp5*/ import java.io.*; public class manimbo_mp5{ public static void main (String[]args) throws IOException{ BufferedReader br=new BufferedReader (new InputStreamReader (System.in)); Integer x=8,y=1,heads=0,tails=0; String ht=""; while (x>0){ System.out.print ("Enter toss #" + y + " result: "); ht=br.readLine(); if (ht=="h"){ heads++; } else if (ht=="t"){ tails++; } x--; y++; System.out.println ("Tails: " …

Hi guys, I'm still quite new to programming and have an exam soon where we have to hand-write programs(no IDE). Never done this before, just you guys all give fantastic guidance, i wanted to see what you all thought. Any general advice would be appreciated! Theres some small things im …

Hello pals. We're having a project to make a Backup and Restore program in Python. As we think that making a GUI is of course very important, we started using Tkinter after initially trying wxPython which was kind of difficult given the time we had. Either way, we made a …

Hey, I've been working on a project for a while, and had some difficulties at the beginning with the d3dx9.h and lib files, then after some threading here I got the help I needed, or so I thought. It worked well until I decided to make a new project, using …

hi, please assume it is already connected to the access database( it is connected) since i could get all the data out and put them onto a JTable. What is wrong now ... is that i am trying to insert new data to the access db and i got [code] …

Hi This my first c programme.It asks 5 objective questions and displays the result at the end. [B]But when i compile it and run, it asks only for variables A,C and E .It doesn't ask for the inputs to question no. 2 and 4.It only displays these questions and skip …

Hi Im writing an application that uses the Microsoft Tablet PC api's When im trying to set the FACTOID for an ink recogniser, im getting an OLE Error that i cant seem to find a plausable explanation for The code is this [code] vPicture := (Components[i] as TInkPicture); case vPicture.Tag …

Hey, I'm making a math bot, and when you type in your equation it converts the numbers to doubles right away. Except, when doing any equation with a decimal, the decimal is ignored. Example 2 + 2 = 4 (No decimals, it works fine.) 2.2 + 2 = 24 (Decimal …

Hi guys I am trying to build a program which scans data from a text file, but I keep getting an error when trying to compile it. The code [CODE] import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.util.Scanner; import java.io.*; class anything extends JFrame { public anything() { File stuff …

I want to save the page setup dialog setting because I want the user to choose the setting one time and this setting will be constant for the application I searched for this but I didn't find any thing or I want to set the page setup dialog setting by …

I have a symmetrical matrix [B]A[/B] 8 x 8. First I need to find matrix [B]B[/B] = [B]A[/B][sup]T[/sup]*[B]A[/B]; Next I need to inverse B and find [B]C[/B] = [B]B[/B][sup]-1[/sup]; Help please !

Just to say hi to all the .NET helpers out there. I have made the dreaded (but forced) change from vb6 to .NET. I will rely a lot on your expertise in this forum, and thanks to those that will be prepared to sort all my questions. I have been …

Hi, everyone! I'm having trouble with a linker error (I'm using Visual Studio 2008) and I would like to have some tips on solving this problem: This is my code: Bill.cpp [CODE] #include "Bill.h" #include "../Exceptions/InvalidArgumentException.h" Bill::Bill() { } Bill::Bill(string shopName) { if (shopName == "") { throw(InvalidArgumentException("The shop name …

is there any GDI or GDI+ function or method that copies part of client area? something like this: [CODE] char p[100000]; copy(hdc, p, rectangle(10,10,100,100)); paste(hdc, p, x, y); [/CODE]

we have already known that there should be some initialization to work with the stl. To use that library. There are objects that there should be initialized before entering main. I think that I receive this run time SIGSEG due to that. So any idea ? I have use a …

[Not sure how else I would describe the subject, that pretty well sums it up] Here's the set-up: I have a C# project that references variables in another application: [CODE]TextFrame BodyCopyBox = (TextFrame)doc.FindElement("BodyCopyBox");[/CODE] But what can happen is that I can have many of those like: [CODE]TextFrame BodyCopyBox1 = (TextFrame)doc.FindElement("BodyCopyBox1"); …

Salutations! Would anyone be kind enough to provide a general overiew as to what exactly is OpenGL. I searched the internet however, most of the material I came across didn't quite clearly state the different between OpenGL and GLUT. Also, what is SDL? I am quite familiar with C++ however …

Dear Experts How to findout computer / server name with vb.net codes. I want to use it in connection string [CODE] con = New Data.SqlClient.SqlConnection("Data Source=noor;" & _ "Initial Catalog=accounts;Integrated Security=True")[/CODE] Please help