Every now and then I forget that the IsMissing function always returns False when the argument is not a Variant value. This happens because IsMissing does nothing more than converting
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
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
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
Private Declare Function GetComputerName Lib “kernel32” Alias _ “GetComputerNameA” (ByVal lpBuffer As String, nSize As Long) As Long’ Returns the name of the computer.Function ComputerName() As String Dim buffer As
Private Declare Function GetVersion Lib “kernel32” () As Long’ Returns True is executed under Windows NT,’ False if executed under Windows 95/98Function IsWindowsNT() As Boolean IsWindowsNT = (GetVersion() And &H80000000)
Private Type OSVERSIONINFO dwOSVersionInfoSize As Long dwMajorVersion As Long dwMinorVersion As Long dwBuildNumber As Long dwPlatformId As Long szCSDVersion As String * 128End TypePrivate Declare Function GetVersionEx Lib “kernel32” Alias
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
If you’re writing an ActiveX control, you can create properties that return an enumerated value, as in: Public Enum SizeConstants SizSmall = 1 SizMedium SizLargeEnd EnumPublic Size As SizeConstants When