Tip Bank

At times you may need to execute the same block of statements for different values of a variable, but you can’t use a straight For Next loop because the sequence

‘ Return True is a string is made only of spaces, tabs, and Null characters.’ This function is especially useful to test whether fixed-length strings ‘ are initialized.Function IsNullString(Text As

Short-circuit evaluation is an optimization technique automatically adopted by most modern compilers, including all flavors of C++, Borland Delphi and many others. Unfortunately, the Visual Basic compiler is not in

Many VB programmers assume that Visual Basic 5.0 is not capable of creating stand-alone Type Libraries, because the documentation states that when an ActiveX component or control is created, the

Fixed-length strings are generally slower than conventional strings, because all VB string functions and operators only recognize conventional strings, thus all fixed-length strings must be transparently converted to and from

Private Declare Function GetUserName Lib “advapi32.dll” Alias “GetUserNameA” _ (ByVal lpBuffer As String, nSize As Long) As Long’ The name of the interactive userFunction UserName() As String Dim buffer As

When you write a procedure and you want to be sure that the procedure does not affect the value of any variable passed to it as an argument in the

Using “pure” VB, the only way to build a generic routine that returns the number of dimensions of an array passed as an argument is using a loop that repeatedly

Under VB4 Public variables in form and class modules were implemented in the same manner as variables in BAS modules, that is, as direct references to memory locations. This allowed