VB - Peek and Poke from VB

Allows you to manipulate memory addresses directly....

VB Code:

'\\ API declarations...
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (Destination As Long, Source As Long, ByVal Length As Long)
Private Declare Sub CopyMemoryByte Lib "kernel32" Alias "RtlMoveMemory" (Destination As Byte, Source As Long, ByVal Length As Long)
Private Declare Sub CopyMemoryFromByte Lib "kernel32" Alias "RtlMoveMemory" (Destination As Long, Source As Byte, ByVal Length As Long)

These are then used in standard functions thus:

VB Code:

Public Function Peek(Address As Long) As Long
 
Call CopyMemory(Peek, ByVal Address, Len(Address))
 
End Function
 
Public Function PeekByte(Address As Long) As Byte
 
Call CopyMemoryByte(PeekByte, ByVal Address, Len(PeekByte))
 
End Function
Public Function Poke(Address As Long, Value As Long)
 
CopyMemory ByVal Address, Value, LenB(Value)
 
End Function
 
 
Public Function PokeByte(Address As Long, Value As Byte)
 
CopyMemoryFromByte ByVal Address, Value, LenB(Value)
 
End Function

Example of use....

VB Code:

Dim lTest As Long
 
lTest = 100
Debug.Print lTest
 
Poke VarPtr(lTest), 300
 
Debug.Print lTest