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How do you like the new design?
It's cool, great job
[tally: 70%] 70%
It's okay
[tally: 20%] 20%
Its OK but I liked the old layout better
[tally: 0%] 0%
Please bring the old one back
[tally: 10%] 10%

votes: 10

ID: 386
Viewed: 2747
Added: Aug 19, 2002
Version:
Snippet uploaded by: snippet
Written By: Unknown
Demo: Sorry, no demo



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Bits & Memory

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<!---Declaration--->
Option Explicit
'modBits.bas
'-------------------------------------------------------------
' Summary of contained methods:
'-------------------------------------------------------------
' HiWord()
' LoWord()
' Word()
' HexToNumber()
' HexEx()
' ProcPtr()
' Random()

'-------------------------------------------------------------
' API Function Declarations
'-------------------------------------------------------------
Private Declare Sub CopyMemory Lib "kernel32" _
Alias "RtlMoveMemory" (pDest As Any, pSource As Any, _
ByVal ByteLen As Long)

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<!---Code--->


Public Function Random(ByVal Lowerbound As Long, ByVal Upperbound As Long) As Long
'-------------------------------------------------------------
' Returns a random number between Lowerbound and Upperbound.
'-------------------------------------------------------------

Random = Int((Upperbound - Lowerbound + 1) * Rnd + Lowerbound)
End Function


Public Function ProcPtr(ByVal pAddressOfProc As Long) As Long
'-------------------------------------------------------------
' Returns the pointer for a function. pAddressOfProc should
' be passed as AddressOf [proceedure name].
'
' Example usage:
'
' pProc = ProcPtr(AddressOf HexEx)
'-------------------------------------------------------------

ProcPtr = pAddressOfProc
End Function


Public Function HexEx(ByVal iDec As Long, _
Optional iLen As Integer = 8, _
Optional bCNotation As Boolean) As String
'-------------------------------------------------------------
' An enhanced version of VB's Hex() method that lets you
' specify how may preceeding zero's to keep in the output
' notation. Optionally, you can specify to use C notation for
' hex.
'-------------------------------------------------------------

Dim sHex As String
sHex = Right$(String(iLen, "0") & Hex(iDec), iLen)

If bCNotation Then
HexEx = "0x" & sHex
Else
HexEx = "&H" & sHex
End If
End Function


Public Function HexToNumber(ByVal sHexValue As String) As Long
'-------------------------------------------------------------
' Converts the string representation of a hexidecimal number
' into a long value. It does account for the C notation (0x..)
' as well as VB's (&H..).
'-------------------------------------------------------------
Dim iVal As Long
Dim i As Integer
Dim iLen As Integer

Const cHexChars = "0123456789ABCDEF"

sHexValue = UCase$(sHexValue)

If InStr(sHexValue, "H") > 0 Then
sHexValue = Mid$(sHexValue, InStr(sHexValue, "H") + 1)
Else
If InStr(sHexValue, "X") > 0 Then
sHexValue = Mid$(sHexValue, InStr(sHexValue, "X") + 1)
End If
End If

iLen = Len(sHexValue)
For i = iLen To 1 Step -1
iVal = iVal + ((16 ^ (iLen - i)) * (InStr(cHexChars, Mid$(sHexValue, i, 1)) - 1))
Next i

If Hex(iVal) <> sHexValue Then
Err.Raise 5 'illegal function call
Else
HexToNumber = iVal
End If
End Function



Public Function Word(ByVal LoWord As Integer, _
ByVal HiWord As Integer) As Long
'-------------------------------------------------------------
' Packs two integers into a long.
'-------------------------------------------------------------
' API declarations:
'-------------------------------------------------------------
' Private Declare Sub CopyMemory Lib "kernel32" _
' Alias "RtlMoveMemory" (pDest As Any, pSource As Any, _
' ByVal ByteLen As Long)
'-------------------------------------------------------------
Dim dw As Long

CopyMemory dw, LoWord, 2&
CopyMemory ByVal VarPtr(dw) + 2, HiWord, 2&

Word = dw
End Function



Public Function HiWord(ByVal dw As Long) As Integer
'-------------------------------------------------------------
' Extracts the HIWORD from a long.
'-------------------------------------------------------------
' API declarations:
'-------------------------------------------------------------
' Private Declare Sub CopyMemory Lib "kernel32" _
' Alias "RtlMoveMemory" (pDest As Any, pSource As Any, _
' ByVal ByteLen As Long)
'-------------------------------------------------------------

CopyMemory HiWord, ByVal VarPtr(dw) + 2, 2&
End Function



Public Function LoWord(ByVal dw As Long) As Integer
'-------------------------------------------------------------
' Extracts the LOWORD from a long.
'-------------------------------------------------------------
' API declarations:
'-------------------------------------------------------------
' Private Declare Sub CopyMemory Lib "kernel32" _
' Alias "RtlMoveMemory" (pDest As Any, pSource As Any, _
' ByVal ByteLen As Long)
'-------------------------------------------------------------
CopyMemory LoWord, dw, 2&
End Function
;


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