Syntax

DefInt letterrange
DefLng letterrange
DefStr letterrange
DefSng letterrange
DefDbl letterrange
DefCur letterrange
DefObj letterrange
DefVar letterrange
DefBool letterrange
DefDate letterrange

Description

Establishes the default type assigned to undeclared or untyped variables.

Comments

The DefType statement controls automatic type declaration of variables. Normally, if a variable is encountered that hasn't yet been declared with the Dim, Public, or Private statement or does not appear with an explicit type-declaration character, then that variable is declared implicitly as a variant (DefVar A–Z). This can be changed using the DefType statement to specify starting letter ranges for type other than integer. The letterrange parameter is used to specify starting letters. Thus, any variable that begins with a specified character will be declared using the specified Type.

The syntax for letterrange is:

 letter [-letter] [,letter [-letter]]...

DefType variable types are superseded by an explicit type declaration¾using either a type-declaration character or the Dim, Public, or Private statement.

The DefType statement only affects how the Basic Control Engine compiles scripts and has no effect at runtime.

The DefType statement can only appear outside all Sub and Function declarations.

The following table describes the data types referenced by the different variations of the DefType statement:

Statement

Data Type

DefInt

Integer

DefLng

Long

DefStr

String

DefSng

Single

DefDbl

Double

DefCur

Currency

DefObj

Object

DefVar

Variant

DefBool

Boolean

DefDate

Date

Example

DefStr a-m

DefLng n-r
DefSng s-u
DefDbl v-w
DefInt x-z

Const crlf = Chr$(13) + Chr$(10)

Sub Main()

  a = 100.52
  n = 100.52
  s = 100.52
  v = 100.52
  x = 100.52
  msg1 = "The values are:" & crlf & crlf
  msg1 = msg1 & "(String) a: " & a & crlf
  msg1 = msg1 & "(Long) n: " & n & crlf
  msg1 = msg1 & "(Single) s: " & s & crlf
  msg1 = msg1 & "(Double) v: " & v & crlf
  msg1 = msg1 & "(Integer) x: " & x & crlf
  MsgBox msg1
End Sub

See Also

Currency (data type); Date (data type); Double (data type); Long (data type); Object (data type); Single (data type); String (data type); Variant (data type); Boolean (data type); Integer (data type).

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