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<DllImport("kernel32.dll", SetLastError:=True)> _
Public Shared Function WriteProcessMemory(ByVal hProcess As IntPtr, ByVal lpBaseAddress As IntPtr, ByVal lpBuffer As Byte(), ByVal nSize As System.UInt32, <Out()> ByRef lpNumberOfBytesWritten As IntPtr) As Boolean
[DllImport("kernel32.dll", SetLastError : true)]
protected static def WriteProcessMemory(hProcess as IntPtr, lpBaseAddress as IntPtr, lpBuffer as (byte), nSize as int, ref lpNumberOfBytesWritten as int) as bool:
Tips & Tricks:
Use the Signature with the IntPtr as lpBuffer for passing Structures, which got copied to the unmanaged Heap with Marshal.AllocHGlobal and Marshal.StructureToPtr.
public int WriteByteArray( IntPtr BaseAddress, byte  NewVal )
// Return Value
// Sample with IntPtr as lpBuffer for passing structs
public class SomeClass
// Some Win32 Struct in CSharp
private struct LVITEM
public UInt32 mask;
public Int32 iItem;
public Int32 iSubItem;
public UInt32 state;
public UInt32 stateMask;
public IntPtr pszText;
public Int32 cchTextMax;
public Int32 iImage;
public IntPtr lParam;
public Int32 iIndent;
public Int32 iGroupId;
public UInt32 cColumns;
public UIntPtr puColumns;
public IntPtr piColFmt;
public Int32 iGroup;
Public Shared Function Poke(ByVal proc As Process, ByVal target As Integer, ByVal data As Byte()) As Boolean
Return WriteProcessMemory(proc.Handle, New IntPtr(target), data, data.Length, 0)
An IntPtr is a pointer to a memory location (unmanaged) that adapts to the platform it is running on (64-bit, etc.) UNLIKE a standard int/Integer. You should always use this type for unmanaged calls that require it, even though an int will appear to work on your development machine.
1/13/2008 11:00:13 AM - tsahi-188.8.131.52
3/31/2008 1:53:29 PM - -184.108.40.206
TODO - a short description
7/7/2008 5:09:31 AM - -220.127.116.11
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