June 5, 1999

Under some circumstances, an ActiveX DLL can pass private objects to its client application, for example a reference to a control that belongs to a form in the DLL. While

When testing a component in the IDE, always perform a full compilation. This ensures that VB checks the syntax of all the code in the component, which in turn guarantees

‘ Return True if a directory exists’ (the directory name can also include a trailing backslash)Function DirExists(DirName As String) As Boolean On Error GoTo ErrorHandler ‘ test the directory attribute

‘ Return True if a file existsFunction FileExists(FileName As String) As Boolean On Error GoTo ErrorHandler ‘ get the attributes and ensure that it isn’t a directory FileExists = (GetAttr(FileName)

Const LF_FACESIZE = 32Private Type LOGFONT lfHeight As Long lfWidth As Long lfEscapement As Long lfOrientation As Long lfWeight As Long lfItalic As Byte lfUnderline As Byte lfStrikeOut As Byte

It seems that the only way to count the number of 1’s or 0’s in a binary value is creating a loop that iterates on all the 16 or 32

‘ returns the last occurrence of a substring’ The syntax is similar to InStrFunction InstrLast(ByVal Start As Long, Source As String, search As String, _ Optional CompareMethod As VbCompareMethod =

There are a lot of risks involved in using End in VB programs: your databases might not be correctly closed, your objects are not correctly terminated, etc. You should always