C# Signature:
[DllImport("kernel32.dll", SetLastError=true, ExactSpelling=true)]
static extern IntPtr VirtualAllocEx(IntPtr hProcess, IntPtr lpAddress,
uint dwSize, uint flAllocationType, uint flProtect);
VB.NET Signature:
<DllImport("kernel32.dll", SetLastError:=True, ExactSpelling:=True)> _
Private Function VirtualAllocEx(ByVal hProcess As IntPtr, ByVal lpAddress As IntPtr, _
ByVal dwSize As UInteger, ByVal flAllocationType As UInteger, _
ByVal flProtect As UInteger) As IntPtr
End Function
Boo Signature:
[DllImport("kernel32.dll", SetLastError : true, ExactSpelling : true)]
static def VirtualAllocEx(hProcess as IntPtr, lpAddress as IntPtr, dwSize as Int32, flAllocationType as AllocationType, flProtect as MemoryProtection) as IntPtr:
pass
User-Defined Types:
[Flags]
public enum AllocationType
{
Commit = 0x1000,
Reserve = 0x2000,
Decommit = 0x4000,
Release = 0x8000,
Reset = 0x80000,
Physical = 0x400000,
TopDown = 0x100000,
WriteWatch = 0x200000,
LargePages = 0x20000000
}
[Flags]
public enum MemoryProtection
{
Execute = 0x10,
ExecuteRead = 0x20,
ExecuteReadWrite = 0x40,
ExecuteWriteCopy = 0x80,
NoAccess = 0x01,
ReadOnly = 0x02,
ReadWrite = 0x04,
WriteCopy = 0x08,
GuardModifierflag = 0x100,
NoCacheModifierflag = 0x200,
WriteCombineModifierflag = 0x400
}
[Flags]
enum AllocationType:
Commit = 0x1000
Reserve = 0x2000
Decommit = 0x4000
Release = 0x8000
Reset = 0x80000
Physical = 0x400000
TopDown = 0x100000
WriteWatch = 0x200000
LargePages = 0x20000000
[Flags]
enum MemoryProtection:
Execute = 0x10
ExecuteRead = 0x20
ExecuteReadWrite = 0x40
ExecuteWriteCopy = 0x80
NoAccess = 0x01
ReadOnly = 0x02
ReadWrite = 0x04
WriteCopy = 0x08
GuardModifierflag = 0x100
NoCacheModifierflag = 0x200
WriteCombineModifierflag = 0x400
Notes:
None.
Tips & Tricks:
You can get the dwSize in C# with Marshal.SizeOf(typeof(TYPE))
Sample Code:
Please add some!
Alternative Managed API:
The ManagedWindowsApi project (http://mwinapi.sourceforge.net) provides a ProcessMemoryChunk class to allocate and access memory of a different process.
