In general, assignment requires the creation and destruction of a temporary object, whereas initialization does not. This is true for not just for strings, but for every object type, so

A constructor may not be declared virtual. The easiest way to simulate virtual construction is by defining a virtual member function that returns a constructed object of its class type:

Most of the overloaded operators can be declared either as non-static class members or as non-member functions. In this example, operator == is overloaded as a non-static class member: class

If you create an ActiveX control that uses a custom MousePointer property, place the control on a form, and at run time change the Screen.MousePointer property to an hourglass. You’ll

With the RGB function, VB provides a neat and valuable tool for converting separate Red, Green, and Blue values into a single Long color value.. However, VB won’t let you

Sometimes you might want to create autoselecting combo boxes, like those in Intuit Quicken or Microsoft Access, where items in the list are selected as you type. Typically, techniques to

Subclassing a form lets you give a helpful message whenever a user highlights a menu item. Use the Caption property to identify the menu item, then display the help message

You can access certain properties of forms, modules, classes, and events within them only through the Object Browser. To see and update the properties, right-click on the element and select

The fact that HTML fonts display smaller on Macintosh monitors than on PC monitors can cause problems for Web site designers. The cause of the problem is Macintosh monitors default

C/C++ programmers are used to parsing command line arguments using the “int argc” and “char *argv[]” parameters to the main() function. Java programmers can use a similar syntax to greatly

Question: How can I set my home page as my default URL? Answer: Setting your default URL is done differently in Microsoft Internet Explorer and Netscape Navigator. From within Microsoft

Question: I am about to embark on a new Web-based application using Internet Information Server (IIS), Active Server Pages (ASP), SQL Server, and Visual InterDev. So, the back end is

Question: I own a 366MMX Pentium Intel II computer and the Internet still seems slow. Is there any way I can increase the speed of searches and downloading? Answer: The

Question: It seems to me that you should be able to draw images in JavaScript by positioning single-pixel GIF images according to a given algorithm. First, how would you generate

Question: How can I tell which version of JavaScript I am running? I have written JavaScript that runs under Netscape 3 and all the more recent browsers. Answer: In the

Question: What is the command for printing out a column? Answer: In general, you’ll probably use an HTML table, with a single cell in each row, to display your data.

Question: What are the features of a distributed client/server architecture? Answer: The Web is an ideal environment to implement applications that take advantage of a distributed client/server architecture. In fact,

Question: How do I delete from an ADODB.Recordset that is created with a join expression and a where statement to minimize the result from the SQL query? I am using

Question: How do I make an alert that pops up and says “this site best viewed with IE4 at 1024 x 768”? Answer: Making such a popup is easy. Just

Question: How can I change the title of a JavaScript alert box from “www.www.www (JavaScript Application)” to whatever I want? Answer: Simple?you can’t. Unfortunately, JavaScript coders don’t have any control

As with dates, different countries and regions use different symbols and formats when displaying currency values. Java 1.1 provides a simple facility for displaying a currency value in a manner

If you write CGI programs in Perl, you probably find yourself using a lot of long print statements for outputting HTML. HTML uses a lot of double quotes, so it’s

Perl’s regular expression substitution function is useful for CGI string manipulation, but using the default delimiter / can lead to leaning-toothpick syndrome if you use it for paths or URLs.

When delaring an array of primitive types in C and C++, you have to assign a constant for the array size. Since Java treats arrays as objects, the size of

Once your Perl CGI program has run and you’re ready to display the results, you have a couple of choices. If the results are dynamic and different for every user,

You can use this simple code to start any executable application or any executable files. Suppose you want to start the netscape.exe in your application. You can easily do this

The world of DHTML is a chaotic one right now. Netscape Navigator 4.x and Internet Explorer 4.x have sufficiently different implementations of the Document Object Model (DOM) that cross-browser DHTML

You can easily make your program show descriptive text on a StatusBar control in response to mouse movement. Assign the text to the appropriate panel in the MouseMove events of

Sometimes you want to give your users the chance to confirm that they wish to proceed with the closure of a form. Instead of using a MsgBox function and a