cyf
85 lines
2.6 KiB
C#
85 lines
2.6 KiB
C#
using System;
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using System.Drawing;
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using System.Runtime.InteropServices;
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using Microsoft.Win32;
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using System.Reflection;
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using System.Collections.Generic;
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using System.Windows.Forms;
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using System.IO;
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namespace Lskj.PubArtworkPreview
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{
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public static class picture
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{
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public static byte[] GetFileBytes(string fileName, bool largeIcon)
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{
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SHFILEINFO info = new SHFILEINFO(true);
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int cbFileInfo = Marshal.SizeOf(info);
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SHGFI flags;
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if (largeIcon)
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flags = SHGFI.Icon | SHGFI.LargeIcon | SHGFI.UseFileAttributes;
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else
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flags = SHGFI.Icon | SHGFI.SmallIcon | SHGFI.UseFileAttributes;
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SHGetFileInfo(fileName, 256, out info, (uint)cbFileInfo, flags);
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byte[] bytes = ImgToByte(Icon.FromHandle(info.hIcon).ToBitmap());
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info.hIcon = IntPtr.Zero; info.iIcon = 0; info.dwAttributes = 0; info.szDisplayName = ""; info.szTypeName = "";
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return bytes;
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}
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public static byte[] ImgToByte(Image img)
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{
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try
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{
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using (MemoryStream ms = new MemoryStream())
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{
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byte[] imagedata = null;
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img.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
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imagedata = ms.GetBuffer();
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return imagedata;
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}
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}
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catch (Exception ex)
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{
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MessageBox.Show(ex.ToString());
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return null;
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}
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}
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[DllImport("Shell32.dll")]
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private static extern int SHGetFileInfo
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(
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string pszPath,
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uint dwFileAttributes,
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out SHFILEINFO psfi,
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uint cbfileInfo,
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SHGFI uFlags
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);
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[StructLayout(LayoutKind.Sequential)]
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private struct SHFILEINFO
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{
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public SHFILEINFO(bool b)
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{
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hIcon = IntPtr.Zero; iIcon = 0; dwAttributes = 0; szDisplayName = ""; szTypeName = "";
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}
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public IntPtr hIcon;
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public int iIcon;
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public uint dwAttributes;
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[MarshalAs(UnmanagedType.LPStr, SizeConst = 260)]
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public string szDisplayName;
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[MarshalAs(UnmanagedType.LPStr, SizeConst = 80)]
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public string szTypeName;
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}
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private enum SHGFI
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{
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SmallIcon = 0x00000001,
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LargeIcon = 0x00000000,
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Icon = 0x00000100,
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DisplayName = 0x00000200,
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Typename = 0x00000400,
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SysIconIndex = 0x00004000,
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UseFileAttributes = 0x00000010
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}
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}
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}
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