For most uses, double is the default floating-point data type to be used. Variables of type double offer higher accuracy and minimize truncation and deviation to a minimum. This is

Java’s serialization provides an elegant, and easy to use mechanism for making an object’s state persistent. While controlling object serialization, we might have a particular object data member that we

A memory leak occurs when an application fails for some reason to release dynamic memory that was allocated using new or malloc().The application won’t reclaim the allocated memory because both

A standard in our shop is to provide keyboard shortcutswherever possible. We make extensive use of JOptionPaneobjects in dialogs for quick clarification and/or messages,but the buttons for “Yes”, “No”, “Ok”,

The compiler inserts temporary objects “behind your back” in several contexts. For time critical applications, the overhead of a temporary can be quite significant because both the constructor and the

When designing an exception class, think of it as a standalone class with data members and member functions. A well-designed exception class should have a member function that returns a

In general, the global new and delete operators are implemented in a thread-safe manner: each invocation of either operator locks the heap before performing the allocation/deallocation of memory and when

Browsers Targeted: Internet Explorer 5 Normally, if you don’t explicitly set a CSS property in a style sheet or style attribute, querying the style for that property will return an

Browsers Targeted: Internet Explorer 5 You can launch the Organize Favorites dialog box from code in Internet Explorer 5.0, through the window.external.ShowBrowserUI method. This method takes two arguments: the name

One of the complaints about HTML editors is that they try to help you too much and end up rewriting HTML code. On the other hand, if your HTML source

Browsers Targeted: Internet Explorer 5 In Internet Explorer 5.0, you can determine the characteristics of the specific system through the use of the built-in Client Capabilities behavior (known as clientCaps).

Question: The company I work for is nearly ready for e-business. We have developed lots of reusable business objects and I need to convert them into a format reusable/implementable in

Question: I’m trying to make a small image at the bottom of each form submit information from my database to the user when the user presses on it. However, I

Question: I use Exchange 5.5 and Outlook 2000. Some users are getting duplicate Internet e-mails. I can’t find out why. Recipients in Exchange have only one SMTP address and one

Question: In Netscape, next to the address bar is an arrow pointing down. If you click on that arrow, it displays the previous 14 addresses. How can I prevent it

If you want to prevent the user from closing a form by using Alt+F4 or by clicking on the “X” button in the upper-right corner you just need to write

Const MMSYSERR_NOERROR = 0Const MAXPNAMELEN = 32Const MIXER_LONG_NAME_CHARS = 64Const MIXER_SHORT_NAME_CHARS = 16Const MIXER_GETLINEINFOF_COMPONENTTYPE = &H3&Const MIXER_GETLINECONTROLSF_ONEBYTYPE = &H2&Const MIXER_SETCONTROLDETAILSF_VALUE = &H0&Const MIXERLINE_COMPONENTTYPE_DST_FIRST = &H0&Const MIXERLINE_COMPONENTTYPE_DST_SPEAKERS = &H4Const MIXERCONTROL_CONTROLTYPE_VOLUME =

Unlike regular LNK shortcut, which contain data in binary file, Internet shortcut files are just text files in this format: [InternetShortcut]URL=www.domain.com Thus it is simple to programmatically create an Internet

The Coolbar control consists of a collection of Band objects, and each Band object exposes a Child property. To move a control inside the Coolbar you just have to assign

There are two simple ways to add the so-called size-grips to the bottom-right corner of a form. The first method is to add a StatusBar control, which includes a size-grip

Private Declare Function mciSendString Lib “winmm” Alias “mciSendStringA” _ (ByVal lpstrCommand As String, ByVal lpstrReturnString As String, _ ByVal uReturnLength As Long, ByVal hwndCallback As Long) As LongPrivate Declare Function

Private Declare Function mciSendString Lib “winmm” Alias “mciSendStringA” _ (ByVal lpstrCommand As String, ByVal lpstrReturnString As String, _ ByVal uReturnLength As Long, ByVal hwndCallback As Long) As LongPrivate Declare Function

Private Declare Function mciGetErrorString Lib “winmm” Alias _ “mciGetErrorStringA” (ByVal dwError As Long, ByVal lpstrBuffer As String, _ ByVal uLength As Long) As Long’ Get the description of a MCI

Visual Basic 6 is the first VB version that lets you programmatically change the DataSource property at runtime, for example to point to another ADO Data control or another ADO

Sometimes is useful to add an icon in the Window taskbar’s status area (a.k.a. System Tray), to gain a better interaction between the user and your application. The only API

Const SND_ASYNC = &H1Private Declare Function PlaySound Lib “winmm.dll” Alias “PlaySoundA” (ByVal _ lpszName As String, ByVal hModule As Long, ByVal dwFlags As Long) As Long’ Play a WAV file.”

Const WS_CHILD = &H40000000Private Declare Function mciSendString Lib “winmm” Alias “mciSendStringA” _ (ByVal lpstrCommand As String, ByVal lpstrReturnString As String, _ ByVal uReturnLength As Long, ByVal hwndCallback As Long) As

Browsers Targeted: Internet Explorer 5 Behaviors let you create specific functionality within custom HTML tags. XSL (Extensible Stylesheet Language) lets you transform a block of XML into some form of

Question: I have opened a table as a grid object. I want to go to a desired column (say 34) and the table has 62 fields. Currently only columns 1