When a socket wishes to terminate a connection it can linger, allowing unsent data to be transmitted, or it can

The static initialization order disaster is a very subtle and commonly misunderstood aspect of C++. Unfortunately, it’s very hard to detect?the errors occur before main() begins. This means as soon

This can be done for classes derived from CObject through a functionality provided by the MFC as a macro named RUNTIME_CLASS.1. Make a class derived from CObject and create its

The following macros will facilitate this task and have been very useful: #define SAFEDELETE(p) if(p) { delete p; p =NULL;}#define SAFEDELETE_ARRAY if(p) { delete [] p; p = NULL;}How to

Always put the constant on the left side of an equality/inequality comparison like this: if (0 == Value) This is a good practice because if you accidentally put the ‘=’

Calling exit() from any where in the program will result in the process getting terminated. For example, if exit() is called from a code in a dll which is loaded

The size of the int, char, long, or short depends on what operating system and compiler version you are using. The same applies for short and long data types.The usual

You can put VB’s registry functions to good use by creating a few reusable routines that save, reload, and delete size and state of a form in your program. ‘

Private Declare Function EnumWindows Lib “user32” (ByVal lpEnumFunc As Long, _ ByVal lParam As Long) As LongPrivate Declare Function EnumChildWindows Lib “user32” (ByVal hWndParent As _ Long, ByVal lpEnumFunc As

Private Declare Function GetDesktopWindow Lib “user32” () As Long’ Display all the child window of a given window in a TreeView control’ omit 2nd and 3rd argument to display the

Private Declare Function SystemParametersInfo Lib “user32” Alias _ “SystemParametersInfoA” (ByVal uAction As Long, ByVal uParam As Long, _ ByRef lpvParam As Any, ByVal fuWinIni As Long) As LongConst SPIF_SENDWININICHANGE =

Private Declare Function GetSystemMetrics Lib “user32” (ByVal nIndex As Long) _ As LongPrivate Declare Function GetDoubleClickTime Lib “user32” () As LongConst SM_CXDOUBLECLK = 36Const SM_CYDOUBLECLK = 37′ retrieve info about

Private Type MENUITEMINFO cbSize As Long fMask As Long fType As Long fState As Long wID As Long hSubMenu As Long hbmpChecked As Long hbmpUnchecked As Long dwItemData As Long

By proactively closing connections when they are no longer needed, you reduce demand on the database server and make resources available to other users. Connections are closed when they go

System.out leads the output to the standard output stream (normally mapped to the console screen). System.err leads the output to the standard error stream (and, by default to the console,

Records can be deleted depending upon an expiration date in ASPThe sample code is given below: set connected= server.createobject(

Use the Command.Tag property to enable one button to be used for two distinct states (On/Off, True/False). This is helpful for changing filters, modes, etc. It saves screen

By default, the CacheSize property of the Recordset object is set to 1 for all cursor types. By increasing the CacheSize, you can increase the number of records the provider

If you’re running the client or server with Java 2, then you’ll need to specify a security policy file, to prevent SecurityExceptions being thrown. This policy file will allow your

If a string has two or more consecutive spaces, this will bring them down to a single space. Private Function TrimToSingleSpace(strToTrim As String) As StringstrToTrim = Trim(strToTrim)Do Until InStr(1, strToTrim,

Reading cookies from a servlet is easy. You can gain access to any cookies sent by the browser from the javax.servlet.http.HttpServletRequest passed to the servlet’s doGet, doPost, etc methods. HttpServletResponse

Add 2 list boxes to a form: list1 and list2. Set list1

Never walk away from a routine that is not functionally complete but that will still compile. You might forget, or be out sick, and the module may never be finished.