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The Latest

DataWindow Initial Values

Question: How can I use global variables to set initial values in a DataWindow? I have tried to use “Rows..Column Specs..” but all it displays is the name of the

Alternate Confirm Message Box

Question: Can I make a confirm message box with “Yes” and “No” as opposed to “OK” and “Cancel”? Answer: Unfortunately, you’re out of luck. As you’ve found out, the JavaScript

Use DatagramSocket to See Who’s Calling Your Server

You can use java.net.DatagramSocket class to identify a remote machine that is accessing your server. The class java.net.DatagramSocket represents a socket for sending and receiving datagram packets. A datagram socket

Your Options With Sockets

JDK 1.1 offers enhanced control over a socket’s behavior through some socket options. These options are: SO_TIMEOUT, which you can access through accessor methods: public synchronized int getSoTimeout() throws SocketException

Formatting Date and Time Values

VBScript has a built in function that allows you to convert a general date (MM/DD/YY HH:MM:SS AM/PM) into numerous other formats. The other formats are long date, short date, long

Dynamically Display the Last Modified Date

A lot of Web pages have a last modified date at the bottom of the page. Although this is a feature easily managed by changing the HTML, a better approach

Customize Your Find in VID

Do you ever wonder what the “Browse” button is for in your VID Find dialog? Press it and you will “find” out. It is actually a very nifty little feature

Sort Using a JavaScript Array

Javascript Arrays are quite versatile. One of its built-in features is the sort method. When an array is populated, you can simply call the sort method to sort by text.

Build Select Box Options Easily

Each time I work on a Web project, there is a page or two where I have to build a select box control where the options are derived from some

What are Aggregates?

The term “aggregate” is used in the ANSI standard to denote an array or a class with no constructors, no private or protected data members, no base classes, and no

The Memory Alignment of a Union

In C and C++, a union is aligned according to the alignment requirements of its largest member. For example: union U{ char c; short s; int i;}; The union U

Understanding What Memory Alignment Means

Most CPUs require that objects and variables reside at particular offsets in the system’s memory. For example, 32-bit processors require a 4-byte integer to reside at a memory address that

When Can a void-Cast be Useful?

Stringent compilers issue a warning message when a function’s return value is ignored. For example: int func(){ return 0;}int main(){ func(); //return value ignored} Indeed, ignoring a function’s return value

Alternative Representations of C++ Operators

C++ defines textual representations for logical operators. Platforms and hardware equipment that do not support all the special characters used as logical operators can use these alternative representations. The alternative

React to Font-Changed Events

Use WithEvents to perform an action when you change any font properties of a specific control or form. Make sure you set the OLE Automation reference in the References dialog:

Q&D Sort Using Hidden List Box

VB has no built-in Sort function. Although lots of sort routines of varying complexity and performance are available, there’s a simple “cheat” that you might find useful. The standard VB

Toggle Listview Headers Between Flat and 3-D

Whenever you want a ListView control with flat, nonclickable headers, use this code to toggle the header style. Flat headers don’t give users the impression of sortability that 3-D headers

A Generic Routine to Fill Unbound Lists

A common need in database processing is retrieving a list of the values of a particular column field for every record in a table. This function takes arguments for a

Consolidate Global Data

We all know that using global variables in our projects is not considered good programming practice. Nevertheless, everyone does it. Sometimes you need to introduce public variables for storing initialization

Speed Up Download Time

Question: How can I speed up the download time of the text and images on my company’s Web site? Is there any rule of thumb to go by? Answer: The

Functions Returning Arrays

Question: Is it possible for a function to return an array instead of a single value? Answer: No but, then again, you don’t really pass arrays as parameters, either. What

Creating a Callback Function Pointer

Question: I am using Microsoft Visual C++ 6.0 and am trying to create a callback function pointer to the public member of a class, but I keep getting the following

Linked Lists and Recursion

Question: I am using several large data structures as linked lists to process some data. Many of my helper functions use recursion. Because of the size/amount of data that I’m