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<DllImport("kernel32", CharSet:=CharSet.Auto, SetLastError:=True)> _
Public Shared Function VirtualProtectEx(ByVal hProcess As IntPtr, ByVal lpAddress As IntPtr, ByVal dwSize As IntPtr, ByVal flNewProtect As UInteger, ByRef lpflOldProtect As UInteger) As Boolean
End Function
Public Declare Function VirtualProtectEx Lib "kernel32" (ByVal hProcess As Long, ByVal lpAddress As Any, ByVal dwSize As Long, ByVal flNewProtect As Long, ByVal lpflOldProtect As Long) As Long
Boo Signature:
[DllImport("kernel32.dll", SetLastError : true)]
def VirtualProtectEx(hProcess as IntPtr, lpAddress as IntPtr, dwSize as UIntPtr, flNewProtect as UInt32, ref lpflOldProtect as UInt32) as bool:
pass
[DllImport("kernel32.dll", SetLastError : true)]
def VirtualProtect(lpAddress as IntPtr, dwSize as UIntPtr, flNewProtect as UInt32, ref lpflOldProtect as UInt32) as bool:
pass
User-Defined Types:
None.
Notes:
dwSize should be IntPtr or UIntPtr because the underlying type is SIZE_T and varies with the platform.
Tips & Tricks:
Please add some!
In Essential C# 2.0 by Mark Michaelis, it is mentioned ref is to be used for lpflOldProtect rather than out because the callee can ignore the data passed with ref.
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 4:00:13 AM - Damon Carr-72.43.165.29
Click to read this page
6/25/2010 2:17:25 PM - -90.152.60.34
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