trunk/RomCheater.Core/ProcessIconEx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using System.Drawing;

namespace RomCheater.Core
{
    public class ProcessIconEx
    {
        [DllImport("Shell32", CharSet = CharSet.Auto)]
        private static unsafe extern int ExtractIconEx(
            string lpszFile,
            int nIconIndex,
            IntPtr[] phIconLarge,
            IntPtr[] phIconSmall,
            int nIcons);
        [DllImport("user32.dll", EntryPoint = "DestroyIcon", SetLastError = true)]
        private static unsafe extern int DestroyIcon(IntPtr hIcon);
        public static Icon ExtractIConFromFile(string file, bool large)
        {
            unsafe
            {
                int readIconCount = 0;
                IntPtr[] hDummy = new IntPtr[1] { IntPtr.Zero };
                IntPtr[] hIconEx = new IntPtr[1] { IntPtr.Zero };

                try
                {
                    if (large)
                        readIconCount = ExtractIconEx(file, 0, hIconEx, hDummy, 1);
                    else
                        readIconCount = ExtractIconEx(file, 0, hDummy, hIconEx, 1);

                    if (readIconCount > 0 && hIconEx[0] != IntPtr.Zero)
                    {
                        // GET FIRST EXTRACTED ICON
                        Icon extractedIcon = (Icon)Icon.FromHandle(hIconEx[0]).Clone();

                        return extractedIcon;
                    }
                    else // NO ICONS READ
                        return null;
                }
                catch (Exception ex)
                {
                    /* EXTRACT ICON ERROR */

                    // BUBBLE UP
                    throw new ApplicationException("Could not extract icon", ex);
                }
                finally
                {
                    // RELEASE RESOURCES
                    foreach (IntPtr ptr in hIconEx)
                        if (ptr != IntPtr.Zero)
                            DestroyIcon(ptr);

                    foreach (IntPtr ptr in hDummy)
                        if (ptr != IntPtr.Zero)
                            DestroyIcon(ptr);
                }
            }
        }
    }
}
1	william	686	using System;
2			using System.Collections.Generic;
3			using System.Linq;
4			using System.Text;
5			using System.Runtime.InteropServices;
6			using System.Drawing;
7
8			namespace RomCheater.Core
9			{
10			public class ProcessIconEx
11			{
12			[DllImport("Shell32", CharSet = CharSet.Auto)]
13			private static unsafe extern int ExtractIconEx(
14			string lpszFile,
15			int nIconIndex,
16			IntPtr[] phIconLarge,
17			IntPtr[] phIconSmall,
18			int nIcons);
19			[DllImport("user32.dll", EntryPoint = "DestroyIcon", SetLastError = true)]
20			private static unsafe extern int DestroyIcon(IntPtr hIcon);
21			public static Icon ExtractIConFromFile(string file, bool large)
22			{
23			unsafe
24			{
25			int readIconCount = 0;
26			IntPtr[] hDummy = new IntPtr[1] { IntPtr.Zero };
27			IntPtr[] hIconEx = new IntPtr[1] { IntPtr.Zero };
28
29			try
30			{
31			if (large)
32			readIconCount = ExtractIconEx(file, 0, hIconEx, hDummy, 1);
33			else
34			readIconCount = ExtractIconEx(file, 0, hDummy, hIconEx, 1);
35
36			if (readIconCount > 0 && hIconEx[0] != IntPtr.Zero)
37			{
38			// GET FIRST EXTRACTED ICON
39			Icon extractedIcon = (Icon)Icon.FromHandle(hIconEx[0]).Clone();
40
41			return extractedIcon;
42			}
43			else // NO ICONS READ
44			return null;
45			}
46			catch (Exception ex)
47			{
48			/* EXTRACT ICON ERROR */
49
50			// BUBBLE UP
51			throw new ApplicationException("Could not extract icon", ex);
52			}
53			finally
54			{
55			// RELEASE RESOURCES
56			foreach (IntPtr ptr in hIconEx)
57			if (ptr != IntPtr.Zero)
58			DestroyIcon(ptr);
59
60			foreach (IntPtr ptr in hDummy)
61			if (ptr != IntPtr.Zero)
62			DestroyIcon(ptr);
63			}
64			}
65			}
66			}
67			}