Sometimes it’s useful to close

The data control allows you to quickly link controls and databases; however, not only is it far from flexible compared with the database-objects coding interface, it doesn’t look great. I

VB6 introduced the Split function, which returns a zero-based, one-dimensional array containing a specified number of substrings. Although this function is useful in itself, you can also use it in

It’s too bad Microsoft didn’t create the Split function until VB6, but here’s a function that duplicates it for VB4 and VB5 users. The only difference is that with VB4

Here’s a useful procedure to position a ComboBox according to a value of the ItemData property or the List property. It’s useful to position a ComboBox with values taken from

This simple piece of code saves a lot of headaches when it comes to altering dates. It allows you to use the plus and minus keys to increment and decrement

Referencing a static local variable in a procedure is two to three times slower than a regular local, dynamic variable. If your procedure demands every last bit of speed possible,

In today’s world, you probably want to let your users browse the Web inside your app. You can add the Microsoft Internet Control to do this; however, the user must

Microsoft has documented a problem with windowless User-Controls that have a transparent Backstyle. Once a form contains such a control, you can’t select it by clicking on it with the

A valid C string consists of an array of zero or more characters plus an additional null character. Thus, the shortest possible string must contain at least one character. Remember

In pre-standard C++, the prototype of main() didn’t have a return value. On some compilers, it was: main() /* no explicit return value; int assumed*/ While others used one of

Applications constantly undergo modifications, bug fixes, and customization. Programmers often remove pieces of obsolete code that use a variable while leaving the declaration of that variable intact. A clever compiler

In legacy code and environments that support C exclusively, using scanf() is still a widespread method of getting input from a user (or a file, when using fscanf()). When using

One of the frequently asked questions I receive is: “I’m learning C at school/college/from a book. Am I wasting my time learning this language? Should I be learning C++ instead?”

Question: What is the easy way for a user to access another user’s calendar (or any other folder in the mailbox)? With Outlook 97/98 you can use the not-so-user-friendly File

Question: When initializing a formset, each of the forms in the set are displayed before the order 1 form gets focus. Is there a way to suppress displaying these other

Question: What is an index and what is a sort? Answer: Here is a table that I will refer to during my answer: RecNo cName nAge—– —– —-1 Rick 342

Question: I write language instruction programs and have been calling mplayer2 to allow students to hear the pronunciation saved in recorded sound files. But mplayer takes forever to load and

Question: Can you tell me what this error is? Dr. Watson: An application error has occurred, error log is being generated DBASVR.exe Exception access violation (0xc0000005) address 0x778014e6Event Log:Dr Watson

Question: Our company is using Exchange 5.5 as its e-mail server and Outlook as the base e-mail client. What considerations do we, as a company, need to be aware of

Question: Do I need to buy a separate developer’s kit for Visual FoxPro 6.0, as I did for FoxPro 2.5, which I currently use? Answer: No, the equivalent of the

When you’re using the Palette Properties dialog box to add new JavaBeans components, there’s common to make a mistake when installing them from a package. On the Add From Package

A Java application accesses an ActiveX control via a set of .CLASS files. Preparing a control for use with VJ++ is a two-step process. First, you register the control using

When you construct a Color object in Java, you can supply the arguments in three ways. The most familiar way is to provide three int values each in the range

One of the most common mistakes that most less-experienced Java programmers make is the unnecessary copying of immutable objects. The problem is compounded by the fact that it is not

The Visual J++ Form Designer allows you to both anchor and dock controls on a form. When a control is anchored to an edge of its container, the distance between

Sometimes it is useful to be able to capture the output from a stack dump, redirect it to a string, and then, perhaps, to a window. Here is an example

Sometimes you write an applet that depends on a Microsoft Internet Explorer-specific extension which is not common to all browsers. How do you find out if the browser that’s running

Instead of creating a GridControl to retrieve row and column data from a table into a hash table, use a variant, as shown: variant = new Variant();for (row2get=0; row2get <

Developers should realize that only a few optimizations are supported by most Java compilers. That most Java compilers do little when it comes to optimizing code may be surprising, but