can anyone tell me wats wrong with following code its giving me error like :

Error1The best overloaded method match for 'p.Program.ReadProcessMemory(System.IntPtr, System.IntPtr, byte[], uint, out System.IntPtr)' has some invalid argumentsE:\ani\p\p\Program.cs4727p

Error2Argument '3' should not be passed with the 'out' keywordE:\ani\p\p\Program.cs4775p




using

System;

using

System.Collections.Generic;

using

System.Text;

using

System.Diagnostics; // For the Process class

using

System.Runtime.InteropServices;

namespace

p

{

class Program

{

[

DllImport("Kernel32.dll")]

public static extern IntPtr OpenProcess(int dwDesiredAccess, bool

bInheritHandle,

Int32 dwProcessId);

[

DllImport("Kernel32.dll")]

public static extern bool ReadProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, [In, Out] byte[] lpBuffer, UInt32 nSize, out IntPtr lpNumberOfBytesRead);

[

DllImport("Kernel32.dll")]

public static extern bool WriteProcessMemory(IntPtr hProcess, IntPtr

lpBaseAddress, [

In, Out] byte[] lpBuffer, UInt32 nSize, out IntPtr lpNumberOfBytesWritten);

[

DllImport("Kernel32.dll")]

public static extern int GetLastError();

public static readonly int PROCESS_VM_READ = 0x0010;

public static readonly int PROCESS_VM_WRITE = 0x0020;

static void Main(string[] args)

{

Process[] p = Process.GetProcessesByName("notepad");

ProcessModule pm = p[0].MainModule;

Console.WriteLine(pm.BaseAddress + ":" + p[0].Id);

IntPtr hProcess = OpenProcess(PROCESS_VM_READ, false, p[0].Id);

Console.WriteLine(hProcess);

byte[] cptr = new byte[4];

IntPtr xptr;

bool result = ReadProcessMemory(hProcess, pm.BaseAddress, out cptr, 200, out xptr);

Console.WriteLine(result + ":" + xptr);

}

}

}

thx buddy ... its working fine ..

You can't pass an in,out parameter as out parameter like you do.

See pinvoke.net how to invoke the windows API function.

Defining a parameter as in,out is the default (passing an object by reference). According to pinvoke, the 3rd should be defined as out only.

---

Geert van Horrik - CatenaLogic
Visit my blog: http://blog.catenalogic.com

That's right,
All you need to do just write the following

bool

result = ReadProcessMemory(hProcess, pm.BaseAddress, cptr, 200, out xptr);

it works with me
Thanks

---

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thx buddy ... its working fine ..