Normally, when you allocate an array using new or malloc in VC++, you can only see the first element when you look at the variable in the watch window. To

Many of the C runtime functions have direct equivalents in the Win32 application programming interface (API). However, when you use C-Runtime functions, you need to have C-Runtime startup code and

Loops (for, while, do..while) are used often in code?especially nested loops. Eventually, you need to exit the loop by using a “break” statement. However, if you are inside of a

In Java, Strings are immutable objects. This means that they cannot be modified in any way after they are created. When you attempt to modify a String object, you often

For a number of reasons, you might need to write an object to a file for future usage. Perhaps your applet needs to keep some sort of “state” and between

Singletons are builder design patterns where the number of instances is limited to one (according to the Gang of Four – DesignPatterns). The most common way of implementing them is

The following java code allows you to identify the operating system on which your application is running: class OperatingSystem{ public static void main(String args[]) { System.out.println (“Operating system : “

There are lots if times when the system needs to be restarted, for example, after changing the autoexec.bat path. Here is code you can use, in the place of writing

‘ Set the path of the picture used as background of the IE5/5.5 toolbar’ Note: requires the SetRegistryValue, CheckRegistryKey and CreateRegistryKey ‘ routines, you can find them in the CodeBank’

‘ Set whether the IE Close menu item is enabled’ Note: requires the SetRegistryValue, CheckRegistryKey and CreateRegistryKey ‘ routines, you can find them in the CodeBank’ Example:’ SetIECloseEnabled FalsePublic Sub

‘ Determine whether the IE Close menu item is enabled’ Note: requires the GetRegistryValue routine, you can find it in the CodeBank’ Example:’ MsgBox “Close is enabled: ” & GetIECloseEnabledPublic

‘ Hide/Show the Explorer’s (Windows Explorer and IE) File menu’ NOTE: this routine requires the SetRegistryValue,’ DeleteRegistryValue and CheckRegistryValue routines,’ that you can find in the CodeBank under the Windows

Private Declare Function DoFileDownload Lib “shdocvw.dll” (ByVal lpszFile As _ String) As Long’ download a file from Internet and open the IE dialogs that allow the user’ to choose where

‘ Clear the IE History’ Notes:’ This routine requires the DeleteRegistryKey and CreateRegistryKey routines,’ you can find them in the CodeBankPublic Sub ClearIEHistory() Const HKEY_CURRENT_USER = &H80000001 Dim sKey As

‘ Get the path of the picture used as background of IE 5/5.5 toolbar’ Note: requires the GetRegistryValue routine, you can find it in the CodeBank’ Example:’ MsgBox GetIEToolbarPicturePublic Function

Creating a VB routine that copies a whole directory tree can be a time-consuming job, but fortunately you don’t have to do it. In fact, you can quickly create an

If you want to stop a user from accessing your website, you can do it by using some relatively simple code. First, you must know the IP address of the

To make this script work, browsers should be javascript enabled.1) To Make TextBox Readonly:

This feature will be required if you want to store exceptions in a database: import java.io.*;public class Test{ public static void main(String args[]) { String trace = exceptionToString(new Exception(A new

The garbage collector works automatically, whether you request it to or not. However, it is possible to make a garbage collector request, by invoking the System.gc() method. When garbage collector

When working with pages, the database is not always available. Sometimes, you need to access a test recordset. Here are is an example of how to create a function that

While definitely not required, overriding the toString() method in your classes will make their use much easier. Although java.land.Object provides basic implementation for this method, it is far from being

The library defines the following open modes and file attributes: ios::app // appendios::ate // open and seek to file’s endios::binary // binary mode I/O (as opposed to text mode)ios::in //

Certain files need to be emptied every time an application opens them before it writes new data to them, for example, a per-session log file. One way to achieve this

The keywords struct and class are almost interchangeable in C++. You can declare a struct that has member functions, constructors, destructor, base classes and so on as if it were

Some programmers consistently define an empty constructor and destructor in their classes, as in: class A{//..public: A() {} ~A() {}}; This is totally useless. C++ guarantees that when a class

Following yesterday’s tip, here’s another deprecated habit that programmers should avoid. Consider the following class hierarchy: class base{public: base();};class derived: public base{public: derived() : base() {/*some code*/} // superfluous}; The

Listboxes provide suitable functionality to act as a quick queue. Create a listbox named ListMyQueue. Use this code to add to your Queue: Public Sub Enqueue(StringToAdd As String)If Len(String_to_Add) >

User-defined types are useful when you need to store structured data that has no specific behavior. If you have associated behavior, you should encapsulate the data in its own class.