VB5 provides interface inheritance through the use of the Implements keyword. For example, CFullTimeEmployee can implement the IEmployee interface. This interface might include basic information such as name, social security

Here’s a demo for using a Label control as a splitter between two controls, as well as sample code for employing the splitter in an Explorer-like application: Option ExplicitPrivate mbResizing

Select Case statements can lead to errors when the test expression in the Select Case line doesn’t yield a true result for any of its individual Case expressions. Therefore, you

Consider these two examples of code that add a string to a textbox. Example 1: Text1.text = Text1.text & MyString Text1.SelStart = Len(Text1.text) Example 2: Text1.SelStart = Len(Text1.text) Text1.SelText =

VB6 comes with an ActiveX control named MSWLESS.ocx (“Microsoft Windowless Controls 6.0”), which contains lightweight equivalents for these standard controls: WLTextWLFrameWLCommandWLCheckWLOptionWLComboWLListWLHScrollWHVScroll The controls have lower resource consumption than their regular

You’ll use the Format function most often with numbers, but it can be useful when applied to strings as well. For example, you can format a credit card number-which is

A POD (plain old data) object has one of these data types–a fundamental type, pointer, union, struct, array, or class–with no constructor. Conversely, a non-POD object is one for which

VBScript has two functions for adding/subtracting dates or date values: DateAdd and DateDiff. For example: DateAdd(interval, number, date)DateDiff(interval, date1, date2 [,firstdayofweek[, firstweekofyear]]) Interval could be “yyyy” for Year, “q” for

As you work with a VB project, the project file–VBP–can become littered with relative path references such as “……..myfoldermyform.frm”. The project loads, but only on your machine. If you send

An object’s behavior is defined by the operations that can be performed on it. This in turn translates to the methods defined in the object’s type or class. Java’s reflection

Sometimes, an event might fire while it’s already executing from a prior invocation. To prevent this unwanted behavior, assign a static variable within the procedure, and test it before allowing

Question: How many characters can fit in an alert box? Answer: There’s no way to tell how many characters can fit in an alert box. The size of the dialogs

Under some circumstances, the reference counting model can enhance performance in terms of both memory usage and speed. A reference counting class counts how many object instances have an identical

Before you spend too much time bashing your head against a problem in Active Server Pages or Visual InterDev, check to see if you’re not up against an acknowledged bug.

Question: I have a table with the following fields: Physician Patient # Procedure One of the Procedures is “X-ray.” How can I list the Patient # of anyone who has

‘ Replace placeholders in the form @@1, @@2, etc.’ with arguments passed after the first one.’ For example, calling this function with’ res = ReplaceArgs(“File @@1 not found on drive

‘ A variant of the Split function, that offers the following improvements’ You can pass a list of valid delimiters to the second argument’ (however, only single-char delimiters are accepted)’

Question: I have a datawindow d_case with a retrieval argument al_case_id. In this datawindow, I have two columns that are ddlbcolumn1 = judge with dddw_judge and column2 = contact with

Question: Is there a way to turn off the transaction log while importing data? We are having a problem with a 1105 error. Answer: You cannot turn the transaction log

‘ A clone of the VB6’s Replace function for use under VB5’ Note: many routines in this collection uses the Replace functionFunction Replace(Source As String, Find As String, ReplaceStr As

‘ Perform multiple substitutions in a string’ The first argument is the string to be searched’ The second argument is vbBinaryCompare or vbTextCompare’ and tells whether the search is case

You probably have seen some Web sites that automatically launch new windows in your browser to show an advertisement or an affiliated Web site. You can do this with the

Normally, all that is required to perform serialization of an object is to implement the java.io.Serializable interface. However, in some cases, you may wish to control how an object is

Class std::string provides two member functions that return the const char * representation of its object: string::c_str() and string::data(). c_str() returns a null-terminated const pointer to char that represents the

The java.lang.reflect defines a Method class that may be used to get information about a method in a Java class. Some of the main methods are: public native int getModifiers();

The TreeView control reports its current node–the selected node–only in its NodeClick event’s Node parameter. If you need to access the Node’s properties–such as Key or Text–outside this event, you

It is implementation-defined whether identical string literals are treated as distinct objects. Consider this code snippet: extern const char msg1[] = “hello”;extern const char msg2[] = “hello”;int main(){ bool eq

You can easily write JavaScript routines to validate form items before the form is submitted. Just define a form tag with a name and an action. The key is to

There’s a handy shortcut in Visual InterDev 6 that saves you from typing in the function code around an event. While you are in VID’s Source view, click the Script