There are various problems regarding pointers that can be handled with the help of macros. Some of these problems are: deleting dangling pointers, deleting pointers other than NULL, and checking

Sometimes, you may need to make a Frame or JFrame non resizable. This happens especially when you are using the setBounds method or if you have less components in your

How many times do we add

Most web sites heavily rely on client-side cookies. For example, ASP Sessions can work correctly only if the browser allows temporary cookies (that are not stored on disk). ASP doesn’t

‘ Add or remove a program to the list of applications that will’ be automatically launched when Windows boots.” Action can be:’ 0 = delete from list’ 1 = execute

‘ get the description of a file from the registry’ or a null string if the file’s extension isn’t registered” NOTE: requires the GetRegistrtValue functionFunction GetFileDescriptionFromReg(ByVal FileName As String) As

Private Declare Sub SHChangeNotify Lib “shell32.dll” (ByVal wEventId As Long, _ ByVal uFlags As Long, ByVal dwItem1 As Long, ByVal dwItem2 As Long)Const SHCNE_ASSOCCHANGED = &H8000000Const SHCNF_IDLIST = 0′ Destroy

Const HKEY_LOCAL_MACHINE = &H80000002′ modify the value of a setting for the VBA editor from the Registry” Possible values for SettingName are:’ AutoQuickTips2 (0/1)’ AutoStatement2 (0/1)’ AutoValueTips2 (0/1)’ BackGroundCompile (0/1)’

Private Declare Sub SHChangeNotify Lib “shell32.dll” (ByVal wEventId As Long, _ ByVal uFlags As Long, ByVal dwItem1 As Long, ByVal dwItem2 As Long)Const SHCNE_ASSOCCHANGED = &H8000000Const SHCNF_IDLIST = 0′ Create

Const HKEY_LOCAL_MACHINE = &H80000002′ read the value of a setting for the VBA editor from the Registry” Possible values for SettingName are:’ AutoQuickTips2 (0/1)’ AutoStatement2 (0/1)’ AutoValueTips2 (0/1)’ BackGroundCompile (0/1)’

Internet Information Server introduced the notion “Isolation Level”, which is also present in IIS4 under a different name. IIS5 supports three isolation levels, that you can set from the Home

Many compilers have a special switch for precompiled headers. A precompiled header is a binary file containing intermediate code that is the result of preprocessing and compiling an ordinary header

A link-time error such as the following is rather common:

Different objects of the same class can access each other’s members, even if these members are private. For example: class A{ int n;public: void f(A* p) {p->n=0;}// another object’s private

Can you tell the difference between the following function calls? f(a,b);g((a,b)); // how many arguments are being passed to g? In the first example, the function f() is called with

Due to hardware limitations and the finite nature of computer arithmetic, certain numeric values cannot be represented properly. These values include infinity, negative infinity, and so on. The limits of

This is a routine for returning the correct file extensions catering to allpossible input values. ‘ Enhanced routine to return correct extension” Input Output Description’ —– —— ———–”

To retrieve drive names from a system, use the static method listRoots in java.io.File package. It will return the all-available drive present in the system. This method will be useful

If you insert/update/delete multiple times to the database, you canimprove performance by using the addbatch and executebatch methods of statement objects. One drawback about using this method is that it

This tip shows how to simulate the look of an Oultlook address book records selection. Open a New VB Project and add a New Form with 1 Text Box and

The purpose of the JDBC API is to make it easy to use other drivers.For example, the driver can be passed into an application using a command line system property.

This function returns the next alpha range. When you pass

To compact MDB databases using ADO, just include a reference to the ‘Microsoft Jet and Replication Objects 2.6 Library’ (distributed with the MDAC 2.6 package) in your VB project. The

Subclass PlainDocument, then set the document of the JTextfield to the subclass as shown below: JTextField myJTextfield;myJTextfield.setDocument(new DigitsDocument());class DigitsDocument extends PlainDocument { public void insertString(int offs, String str, AttributeSet a)throws

Opening recordsets as ForwardOnly or ReadOnly makes them move faster between records. In addition, storing fields to variables before begining the loop speeds up field access. Example: * Create a

With Modal forms there is a need to restrict the movement of the mouse to the form until user closes the form. This can be achieved by using the ClipCursor

Most beginners accidentally declare duplicate variables of different data types or of the same data types. The following illustrates this: class Duplicate{ String data; private void fun() { String data=

Uniqueidentifier(GUID) can’t be used in aggregate operations like count(), etc. This problem may be solved by casting uniqueidentifier as varchar. Presuming that guid_column is a uniqueidentifier column: select count(cast(guid_column as