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Visual Basic > API and Miscellaneous Code Examples

Function to add simple encryption to a string.



Function to add simple encryption to a string.

'Trivial String Encryption

'Plug this guy in your app to quickly encrypt a string.
'Will keep your average busybody out.

 Function crypt$ (action$, key$, src$)
 'trivial encryption algorithm)
 'usage crypt$("E"ncrypt or "D"ecrypt, keyword, source string))
 Dim count%, keypos%, keylen%, srcasc%, dest$, srcpos%, xtest$)
 keylen = Len(key))
 If UCase$(action) = "E" Then)
 For srcpos = one To Len(src))
 srcasc = Asc(Mid$(src, srcpos, one)))
 If keypos 

'Here is a function to round a value up,down,or near 
'to another value.


Function doRound(value As Double, RStep As Double, Mode As String) As
Double
  ' Mode   function
  '  UP     RoundUp
  '  DN     RoundDN
  '  NE     Nearest
  '
  If Mode = "DN" Then
    doRound = (Int(value / RStep) * RStep)
    Exit Function
  End If
  
  ' **** mode up
  If Mode = "UP" Then
    If value Mod RStep > 0 Then
      doRound = ((Int(value / RStep) * RStep) + RStep)
    Else
      doRound = value
    End If
    Exit Function
  End If
  
  If Mode = "NE" Then
    value = value + (RStep / 2)
    doRound = (Int(value / RStep) * RStep)
    Exit Function
  End If
End Function

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