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This class can help in simplifying most of the validation chores in your UI-intensive apps. The class “wraps” around a TextBox control and traps most of its events, to automatically
Introduction In this article I’ll move away from COM security to provide an overview about that vast subject generally referred as “Internet security”. As you will see, providing an effective
‘ evaluate the transposed matrix” a transposed matrix is the array you get when’ you “rotate” a bi-dimensional arrayFunction TransposeMatrix(arr() As Double) As Double() Dim startRow As Long, startCol As
Option Explicit’ Evalutate the 16-bit CRC (Cyclic Redundancy Checksum) of an array of bytes” If you omit the second argument, the entire array is consideredFunction Crc16(cp() As Byte, Optional ByVal
‘ VBA’s intrinsic Rnd function returns numbers evenly’ distributed between 0 and 1. Each number in that’ interval has equal probability of being returned’ for any given function call.’ This
‘ Converts a decimal value into fractional parts as integers’ (based on the concept of Continued Fractions)’ Examples of usage:’ Call DeclToFrac(0.125, a, b) ‘ 1 and 8 are returned
The following technique will allow you to free your tablespaces from Oracle
In Visual Basic, it is not possible to measure time with more precision than one second. This code allows the user to measure time passed in increments less than one
The method shown below returns as a String the complete path to the current (working) directory. This can be useful to know because default files(including property files) are read from
While designing a database in Access 2000 recently, I decided the most intuitive way for my users to be able to look at the data they wanted was to let
Private Declare Sub keybd_event Lib “user32” (ByVal bVk As Byte, _ ByVal bScan As Byte, ByVal dwFlags As Long, ByVal dwExtraInfo As Long)Private Const VK_LWIN = &H5BPrivate Const KEYEVENTF_KEYUP =
Like many high-level, abstract, and portable concepts, EJB spec has itsdownsides. One of them is the very generality that makes beans so portable.Interfaces javax.ejb.EntityBean and javax.ejb.SessionBean declare quite a few
In the coming Visual Studio 7, it is possible to create constructors in VB. One of the great benefits of using constructors is that they make it possible to control
When you pass a read-writable property directly as a ByRef parameter to a function or subroutine, the property will not be changed. This is because in VB 6.0 or previous
Trying to pass an ActiveX control as a parameter to a method on an external ActiveX DLL (or EXE), garners a
The duration of a timed task in seconds can be determined by the DateDiff function. To present the result in a user friendly format, pass the DateDiff result to this
The NowCombo control is a multi-columns ComboBox that expands on the DBCombo control. You can use it to select and copy an item from another table in the database. For
By taking advantage of the functionality of two Microsoft Message Queuing libraries, you can minimize the time it takes to create MSMQ objects during testing or deployment of your messaging
Private Type RECT Left As Long Top As Long Right As Long Bottom As LongEnd TypePrivate Declare Function IsWindow Lib “user32” (ByVal hWnd As Long) As LongPrivate Declare Function GetClientRect
‘ Returns a collection with the names of all the files’ that match a file specification” The file specification can include wildcards; multiple’ specifications can be provided, using a semicolon-delimited’
‘ list all the files in a directory’ if NESTEDDIRS = True it lists a whole directory tree” returns a 1-based array containing all the listed filesFunction ListFiles(ByVal Path As
‘ create a nested directory” it’s similar to MkDir, but it also creates’ all intermediary sub-directoriesSub MakePath(ByVal path As String) Dim i As Integer, ercode As Long On Error Resume
‘ Returns a collection holding all the subdirectories in a path’ that match search attributes (optionally it returns the entire path).Function GetDirectories(path As String, Optional Attributes As VbFileAttribute, _ Optional
‘ compare two files’ return True if they’re equalFunction CompareFiles(ByVal file1 As String, ByVal file2 As String) As Boolean Dim fnum1 As Integer, isOpen1 As Boolean Dim fnum2 As Integer,
Private Type SHELLEXECUTEINFO cbSize As Long fMask As Long hwnd As Long lpVerb As String lpFile As String lpParameters As String lpDirectory As String nShow As Long hInstApp As Long
‘ Returns a collection holding all the filenames that’ match a given filespec and search attributes.Function GetFiles(filespec As String, Optional Attributes As VbFileAttribute) _ As Collection Dim filename As String
Private Type POINTAPI X As Long Y As LongEnd TypePrivate Type RECT Left As Long Top As Long Right As Long Bottom As LongEnd Type’ Region API functinsPrivate Declare Function
The name of an ordinary function is implicitly converted to its memory address. For example: typedef int (*pf) ();int func();pf=func; // OK, ‘func’ is implicitly converted to ‘&func’ However, member
Question: I’m writing a procedure to send an e-mail that will receive two parameters: the e-mail address of the recipient and the subject of the e-mail (e-mail content is not
Question: I want to know if the following declaration is possible: int *p;p= new int;int &refval= *p; Answer: It’s valid C++. You’re binding a reference to an l-value of type
