Added image conversion parts from commonwin32.

NTwain/Internals/MESSAGE.cs

@@ -1,36 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Runtime.InteropServices;
-using System.Text;
-
-namespace NTwain.Internals
-{
-
-
-    /// <summary>
-    /// The MSG structure in Windows for TWAIN use.
-    /// </summary>
-    [StructLayout(LayoutKind.Sequential)]
-    struct MESSAGE
-    {
-        public MESSAGE(IntPtr hwnd, int message, IntPtr wParam, IntPtr lParam)
-        {
-            _hwnd = hwnd;
-            _message = (uint)message;
-            _wParam = wParam;
-            _lParam = lParam;
-            _time = 0;
-            _x = 0;
-            _y = 0;
-        }
-
-        IntPtr _hwnd;
-        uint _message;
-        IntPtr _wParam;
-        IntPtr _lParam;
-        uint _time;
-        int _x;
-        int _y;
-    }
-}

NTwain/Internals/UnsafeNativeMethods.cs

@@ -1,34 +0,0 @@
-using System;
-using System.Runtime.InteropServices;
-using System.Security;
-
-namespace NTwain.Internals
-{
-    [SuppressUnmanagedCodeSecurity]
-    static class UnsafeNativeMethods
-    {
-        #region mem stuff for twain 1.x
-
-        [DllImport("kernel32", SetLastError = true, EntryPoint = "GlobalAlloc")]
-        internal static extern IntPtr WinGlobalAlloc(uint uFlags, UIntPtr dwBytes);
-
-        [DllImport("kernel32", SetLastError = true, EntryPoint = "GlobalFree")]
-        internal static extern IntPtr WinGlobalFree(IntPtr hMem);
-
-        [DllImport("kernel32", SetLastError = true, EntryPoint = "GlobalLock")]
-        internal static extern IntPtr WinGlobalLock(IntPtr handle);
-
-        [DllImport("kernel32", SetLastError = true, EntryPoint = "GlobalUnlock")]
-        [return: MarshalAs(UnmanagedType.Bool)]
-        internal static extern bool WinGlobalUnlock(IntPtr handle);
-
-        #endregion
-    }
-
-    static class NativeMethods
-    {
-
-        [DllImport("user32.dll")]
-        public static extern IntPtr DefWindowProc(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam);
-    }
-}

NTwain/Internals/WinMemoryManager.cs

@@ -1,4 +1,5 @@
 using NTwain.Data;
+using NTwain.Interop;
 using System;
 using System.ComponentModel;
 

NTwain/Internals/WindowsHook.cs

@@ -1,4 +1,5 @@
-using System;
+using NTwain.Interop;
+using System;
 using System.Diagnostics;
 using System.Runtime.InteropServices;
 using System.Windows.Interop;