Software Development Forum

I'm trying to create a class that holds a 2D string array to be used by another class. For some reason, my IDE gives me a bunch of errors when I try to compile. Here's my code: [CODE]public class Lists { String[][] ListArrays = {"Why, Hello there!","Welcome.","blah blah blah","more useless …

iv seen the line 'halt' in some pascal programs after readkey or readln. what does halt do exactly?

Hi all, Im wokring through NEHE's tutorials at the moment and building a cone approximation class to play with the code and learn from the examples but iv reached a snag. I cant get texturing the top curved part of the cone to work (i have called it a pyramid …

i have textboxes that needs to have a value before passing it to database. How to do this? I'm new to windows form validation.. I know of something [CODE]if(textBox1.Text=="") { //do something }[/CODE] is this the right valdiation for windows form?

How do you allow the controls of an application to go back to the cursor of the textbox after checking that the textbox has an empty input? what i want is just the cursor back to the textbox to allow easy user access. thx :) [CODE]txtReminder.?????[/CODE]

Exact Message: [CODE="plain"]Error 1 error C3861: 'SHOWERROR': identifier not found[/CODE] My Includes: [CODE]#pragma once // Exclude rarely-used stuff from Windows headers #define WIN32_LEAN_AND_MEAN #define SAFE_RELEASE(x) if( x ) { (x)->Release(); (x) = NULL; } #define SAFE_DELETE(x) if( x ) { delete(x); (x) = NULL; } #define SAFE_DELETE_ARRAY(x) if( x ) …

There is a easier way and more efficent way to do this with a for loop I believe...I can't put the nail on it can anyone help me out? I want to move a character around in a array...right or left or up and down with md arrays. [CODE] #include …

I have a curius problem with my bitmap writing function, it takes a char array and writes a 24 bit BGR bitmap. It was working fine using an array captured from a camera, I printed out the content of the first couple of bytes: 132 135 131 132 135 131 …

Hi all, I'm having a bit of trouble trying to convert a string which represents hex, to a byte. Logic below, something like this: [CODE] String hexString = "0x5C"; Byte myNewByte; myNewByte = Byte.Parse(hexString); [/CODE] [B]Error: "The input string was not in a correct format"[/B] I know I can have …

This is my current code [CODE] SqlConnection con = new SqlConnection("Data Source = .\\SQLEXPRESS; Initial Catalog = Library; Integrated Security = True"); string query = "select author_name from author"; SqlCommand cmd = new SqlCommand(); cmd.Connection = con; cmd.CommandText = query; SqlDataAdapter da = new SqlDataAdapter(); da.SelectCommand = cmd; DataTable dt …

I have created a string in (e.g. Button1_click) Call that string "textboxtext" now for some basic text to assign to the string I did the following [code] public void button1_Click(object sender, EventArgs e) { string textboxtext; textboxtext = textBox1.Text; textboxtext += textBox2.Text; textboxtext += textBox3.Text; //Some other code later on …

I am having a tough time in vb.net to make the scrollbars to work of the contents of a panel.... here is my code Private Sub HScrollBar1_Scroll(ByVal sender As System.Object, ByVal e As System.Windows.Forms.ScrollEventArgs) Handles HScrollBar1.Scroll Panel122.Left = HScrollBar1.Value now, i want to change .Left to .Right, but it won't …

hey anyone, what is the meaning of while(!correct) ? when correct = 0, what is the meaning of it? i have to trace the output but i dont understand it. please help me (: thanks alot...

Hi guys! I wanna ask how to code to make a button make a sound out when pressed? Can you add sound files to it, like a mp3 file? Any suggestions? Thank You!

Hello, How do i select or set the focus of a particular cell in a datagridview? Actually, this problem is simple but it is hard for me to solve it coz i'm only a beginner in c#. So here is my sample list of students as shown below: [COLOR="Green"]Ann[/COLOR] Antoinette …

So, in advance, I have to admit that this is not quite as "good" a question as what is otherwise found here. It's not about a weird error, or something I can't figure out to do. I just get weird output. I've spent around 2 days simplifying the code, trying …

Hello everyone. I am trying to make a simple, one lined text field, which permits users to enter text into it. The text field I am reffering to is the type that has a carriage return blinker to signify that a user can type there. I have looked up "text …

[code] int x[] = { 1, 4, 8, 5, 1, 4 }; int *ptr, y; ptr = x + 4; y = ptr - x; [/code] why y is coming 4 in this code i think that it should be 8

I am experiencing a problem with turbo c while I execute odd loops. The compiler doesnt wait till I give a yes or a no. It just jumps out of the loop. Can anyone help me?Is it a problem with the compiler or my program. The latter is not possible …

Hey guys I'm having a little problem with unsigned char and reading a file of integers into the array. 1. What the program is suppose to do: It's suppose to dynamically create an array of unsigned char that is the correct size to read in the array of numbers. The …

Im brand new to programming, ive only been doing it for couple weeks. Im having trouble learning functions(or methods) and classes. I really need some problems i can work towards myself to learn this stuff, but there is nothing like that anywhere. Its all just the same tutorials and them …

I need to get an output like: 1 1 11 11 111 111 1111111 I tried a lot and came to the following program. But i'm getting output like: 1 1 11 11 111 111 1111111 Please help me correct this program. The preview of the shape was not coming …

I am getting this error even though a) the header file does exist and is located in the directory and it's not somehow been switched to read only. Also, my #include statement uses "" like "test.h" so the compiler knows to look in the project directory first. I've read that …

I am trying to write a char array to a bitmap in c++. I (think) i know what values I need in my file header and bitmap info header, and i have looked at some examples but I cant seem to solve this problem (i'm sure its something stupid) In …

Is it possible to access a TCP server running outside our LAN through internet? I thought we could use the router IP Addess(which I got from whatismyip.com) in the class Socket Constructor[CODE] Socket(InetAddress address, int port) [/CODE]. But client wasn't able to find the server. Has anybody successfully achieved this …

Is there a way to determine what control I clicked using a global click event. I would like to be able to click a form text box table I created for my access app to enable to enable and unlock it without have a million on click event handlers

hi guys, I found this code on the web but unable to integrate it into my code, can any1 help?. The problem is, it doesnt read till the eof, instead it stops when the condition is erroneously made. [code] #declare Line_Char_Buffer_Size 4000 #declare INPUT_FILE_NAME "Countries.txt" void readData () { FILE …

Hi all, I am trying to check a record in database before inerting a new record here is my code but problem is when i enter a names first alphabet it imediatly populate massage please help me i want to check it after entering whole name thanks in advance. [CODE]Private …

Hi! how can I convert words into numerals... for Example we enter "One crore twenty lakh thirty four thousand seven hundred eighty four" , then its corresponding numeral should be "12034784". What will be the C# code for finding corresponding numerals for range 0 to 999999999 .....

This is the partial codes i wrote for an alarm clock application but why the counting down time don't worked? Thanks in advance :) [CODE]int intTimeDelay = 10; private void mnu5Sec_Click(object sender, EventArgs e) { intTimeDelay = 5; //intTimeDisplay = 5; } private void mnu10Sec_Click(object sender, EventArgs e) { intTimeDelay …

i have write a c++ progam psudocode on additon of two numbers and average of two numbers enterd from keyboard

Hello! I need to extract a custom shape from a given image. That custom shape can be, for example, a triangle. For example, if source picture is 100px width and 100px heigth, I need to define a triangle with points: (x=0 y=0) , (x = 50, y = 50), (x …

I was wondering if anyone could help me a little bit with a problem I encountered on Project Euler. The specific problem at hand is to find the 10,001st prime. I have implemented what I think to be a version of the Sieve of Eratosthenes. When I modify the problem …

Hi, I'm new to C++ and I'm having trouble with this dang linker error. The full error is as follows: [quote]Error 4 error LNK2001: unresolved external symbol "public: static class std::list<class Node,class std::allocator<class Node> > NodeManager::node_list" (?node_list@NodeManager@@2V?$list@VNode@@V?$allocator@VNode@@@std@@@std@@A) Nodes.obj Error 5 fatal error LNK1120: 1 unresolved externals[/quote]From this error, I have …

How to put parameters within dataadapter? Here's an example of non-parameter query.. [CODE]SqlDataAdapter da = new SqlDataAdapter ("SELECT * FROM Table WHERE column='"+textBox1.Text+"'",con);[/CODE]

Hi all. This is the scenario that i have right now. i have a stored procedure created in MS SQL 2000 and is linked to my C# program. The stored procedure contains four select statements (which means it will return 4 tables). In my program, I have four datagrids and …

Hello everyone. I am attempting to build a "form" using Win32 and C++, which contains all of the necessary elements (drop down menus, radio buttons, and check boxes). The problem is, I can find absolutely no resources as to how I would code a drop down list within Win32. The …

I can't items to my combobox I am under the impression the code is; [CODE]comboBox1.Items.Add("NAME");[/CODE] but this doesn't work. The program compiles correctly but nothing is displayed in the box. What am I doing wrong?

Hi, I have a code where I upload a file to a server. The code is shown below. As seen I use a loop to try to connect 10 times if attempts is failing. I have also put this in a try/catch block and at the end, I am showing …

Using the following code I am trying to check the users input string (CAcodes) and checking each one individually by assigning each element in CAcodes to a list (CAcode). A for-loop checks the conditions to make sure that the conditions for each code are met. The main for-loop tests several …

Hey well i am using microsoft visual c# 2008 professional edition and i seem to be having trouble using the cursor. The cursor i am using is one from axialis cursor workshop examples. it is a .cur and it does work as i have changed my windows default cursors to …

Hi well i posted a earlier thread but no one has replied in three days i have one reply, but it's not what i wanted. he cursor i am using is one from axialis cursor workshop examples. it is a .cur and it does work as i have changed my …

I have tried a few different ways to to highlight the text in a jcombobox when it receives focus but none have work. Any have a code example that could help? Some examples I have tried: [CODE] private void fromComboBoxFocusFocusGained(FocusEvent event) { JTextField field = (JTextField)fromComboBox.getEditor().getEditorComponent(); field.selectAll(); } [/CODE] [CODE] …

Dear All, I am designing a crystal report in VB.NET I have designed a crystal report i want to pass parameter from a textbox but when i pass parameter or without passing parameter run the report it pulls all the records from the database please help my code is as …

Hello, I use a a flashcontrol in the Form application. If I have Flash installed on the computer, the control plays the movie fine. If I uninstall the flash from the computer, I receive this error when opening the form. I have tried to put this code inside a try{} …

Can anyone tell me how to compile "mingw-util 0.3"? I am a little confused, when some article says "use make command and it is all done".But "make" command in unknown in my command prompt.I have MinGW installed which comes with codeblocks. I need it to compile MySQL driver, to use …

Hi every one. I want to ask a question. Whenever i plugged a usb in my computer i want to save that time when this happen. Means that i want to save when when a usb is plugged in my pc in a particular day. I want to do it …

So i am trying to make a program that takes the date from windows (this is not where i have the problem). My problem is i want to use that date and create a txt file for each day. For example it would create a file named... 8_4_2010 for today …

hi i m using widos 7 64 bit home edition and want to use borlandC++ taht is not supported by 64bit OS so i install DOSBOX0.74 and try use borlnad in it but seems to me not working as it firstly dosbox can not able to initialize some of it …

Hello All, I need your help to understand , if the following code is ok ? (Baically to have polymorphism of different argument types ) class A{ ... ... public: int function( structA *ptrA); int function( structB *ptrB); } I am getting the compilation error saying the syntax error at …