Question: I tried your procedure for placing my application on the system tray and it works fine. My problem is that it opens the form1 when the application is executed,

Question: How can I add a new event to an existing component (for example, OnScroll to a TTreeView) without building a new ComponentClass? Answer: You can replace existing event handlers

Question: I have a form that uses one data source and one query component. The data set of the data source is the query. Depending on the process, I assign

Implement a low-tech trace of your application by writing a message whenever your code enters and exits a subroutine. This can help you locate elusive bugs, because you can turn

This function returns week identifier information, such as Week Beginning/Ending date, and makes it more generic to return a date of any previous or following weekday. You can use this

To make certain that you declared your variables, place Option Explicit in your Declarations section. Using a mixture of upper and lower case in variable names, you can easily verify

Question: I have an application with a lot of business logic in nonvisual objects that I’d like to deploy as DLLs callable as standard windows DLLs from applications written in

Question: How many DCOM connections can I have on a Windows NT Workstation? (Does it have a limit of 10, like in shares?) How is performance affected when 20 users

Question: I need to use the BDE in a Windows 3.11 environment. My Delphi 1 system does not include BDEINST material, although the help files refer to it. How can

Question: How do I add and remove users from an NT server through VB? I have Web customers who are added and removed frequently from our Web site, where they

The Windows 95 taskbar (with the Auto Hide check box set) is quite attractive and provides a compact, nonintrusive way to access and organize information. You can easily simulate this

Under VB3, IsDate returns True only if the string corresponds to the date format indicated by the “Regional” or “International” settings in the Control Panel. Under VB4 and VB5, however,

The standard assert() macro tests its argument. If the result evaluates to 0, the standard abort() routine is called. Back in C heyday, it was a very useful debugging tool

If you are using templates in your code, you are probably aware of their invaluable advantages. However, templates can cause a code bloat: The compiler reduplicates the template’s body for

In large projects, where hundreds of source files have to be compiled on every build, the long compilation time can be reduced significantly if templates are explicitly instantiated all at

A template name is not a type. When you need a template functioning as a full type (for example: to serve as a base class or as a function argument),

Templates are generic due to their type unawareness. However, there are cases where you need a special behavior for a specific type. C++ supports these cases by means of template

It’s possible to dynamically create a Web page from an FTP directory listing of files with a particular extension. While there are sophisticated components (.DLLs) that you could add, you

The latest version of JavaScript used by both Netscape Navigator 4.x and Microsoft Internet Explorer 4.x includes a C-like switch statement that closely mirrors the SELECT CASE statement available in

It’s possible to dynamically create horizontal and vertical lines and rectangles using Internet Explorer 4.0 Dynamic HTML to alter the width and/or height of a single pixel image. Using this

Animating between a number of images is fairly easy to do and works in Netscape Navigator 3.0+ and Internet Explorer 4.0+. Put the URLs of the images you’d like to

Question: Is there a way to print an HTML page (perhaps using VBScript or JavaScript) without the user clicking on the print button? Answer: Ah, printing! You would think that,

Question: I am having problems setting a lower z-index for a layer that contains a combo box. All of the elements in that layer are covered by a higher z-index

To run executables and objects from Word and Excel from Active Server Pages, you need to change the value of an IIS4 Metabase property called AspAllowOutOfProcComponents to True. The easiest

There are a number of important limitations on the use of cookies by Web site developers. This is because cookies are intended to be used only for infrequent storage of

Question: Is there a way to place and/or move a layer over different frames? I have a menu-frame on the left and a main-frame on the right. Now I’m trying

Question: Is it possible to display a grouped column as a percentage of the whole? Say I have a table that has two fields: ACCESS_TYP CHRG————————- 10 1.00 10 2.00

Question: What is the best path to follow if I wanted to learn to program? (VB, then assembly, then …)I need to know what to start with so I can

Question: I’ve been working on the + operator in my string class. I came across an interesting dilemma: the following code doesn’t call any of my + operators.For example: String