用途：用于获取文件系统默认图标
-
using System;
-
using System.Collections.Generic;
-
using System.Drawing;
-
using System.IO;
-
using System.Linq;
-
using System.Runtime.InteropServices;
-
using System.Text;
-
-
namespace HebianGu.ComLibModule.API
-
{
-
-
/// <summary> 获取文件关联图标 </summary>
-
public partial class IconHelper
-
{
-
/// <summary> 返回系统设置的图标 </summary>
-
/// <param name="pszPath">文件路径 如果为"" 返回文件夹的</param>
-
/// <param name="dwFileAttributes">0</param>
-
/// <param name="psfi">结构体</param>
-
/// <param name="cbSizeFileInfo">结构体大小</param>
-
/// <param name="uFlags">枚举类型</param>
-
/// <returns>-1失败</returns>
-
[DllImport("shell32.dll")]
-
public static extern IntPtr SHGetFileInfo(string pszPath, uint dwFileAttributes, ref SHFILEINFO psfi, uint cbSizeFileInfo, uint uFlags);
-
-
/// <summary> 获取文件图标 </summary>
-
public Icon GetFileIcon(string p_Path)
-
{
-
SHFILEINFO _SHFILEINFO = new SHFILEINFO();
-
IntPtr _IconIntPtr = SHGetFileInfo(p_Path, 0, ref _SHFILEINFO, (uint)Marshal.SizeOf(_SHFILEINFO), (uint)(SHGFI.SHGFI_ICON | SHGFI.SHGFI_LARGEICON | SHGFI.SHGFI_USEFILEATTRIBUTES));
-
if (_IconIntPtr.Equals(IntPtr.Zero)) return null;
-
Icon _Icon = System.Drawing.Icon.FromHandle(_SHFILEINFO.hIcon);
-
return _Icon;
-
}
-
-
/// <summary> 获取文件夹图标 </summary>
-
public Icon GetDirectoryIcon()
-
{
-
SHFILEINFO _SHFILEINFO = new SHFILEINFO();
-
IntPtr _IconIntPtr = SHGetFileInfo(@"", 0, ref _SHFILEINFO, (uint)Marshal.SizeOf(_SHFILEINFO), (uint)(SHGFI.SHGFI_ICON | SHGFI.SHGFI_LARGEICON));
-
if (_IconIntPtr.Equals(IntPtr.Zero)) return null;
-
Icon _Icon = System.Drawing.Icon.FromHandle(_SHFILEINFO.hIcon);
-
return _Icon;
-
}
-
-
/// <summary> 获取系统图标 </summary>
-
public Icon GetSystemInfoIcon(string p_Path)
-
{
-
if (Path.HasExtension(p_Path))
-
{
-
try
-
{
-
return Icon.ExtractAssociatedIcon(p_Path);
-
}
-
catch
-
{
-
return null;
-
}
-
-
}
-
else
-
{
-
return this.GetDirectoryIcon();
-
}
-
}
-
-
}
-
-
partial class IconHelper
-
{
-
#region - Start 单例模式 -
-
-
/// <summary> 单例模式 </summary>
-
private static IconHelper t = null;
-
-
/// <summary> 多线程锁 </summary>
-
private static object localLock = new object();
-
-
/// <summary> 创建指定对象的单例实例 </summary>
-
public static IconHelper Instance
-
{
-
get
-
{
-
if (t == null)
-
{
-
lock (localLock)
-
{
-
if (t == null)
-
return t = new IconHelper();
-
}
-
}
-
return t;
-
}
-
}
-
/// <summary> 禁止外部实例 </summary>
-
private IconHelper()
-
{
-
-
}
-
#endregion - 单例模式 End -
-
-
}
-
-
[StructLayout(LayoutKind.Sequential)]
-
public struct SHFILEINFO
-
{
-
public IntPtr hIcon;
-
public IntPtr iIcon;
-
public uint dwAttributes;
-
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
-
public string szDisplayName;
-
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
-
public string szTypeName;
-
}
-
-
-
public enum SHGFI
-
{
-
SHGFI_ICON = 0x100,
-
SHGFI_LARGEICON = 0x0,
-
SHGFI_USEFILEATTRIBUTES = 0x10
-
}
-
}
应用示例：
-
/// <summary> 图片路径 </summary>
-
public Icon ImagePath
-
{
-
get { return IconHelper.Instance.GetSystemInfoIcon(FilePath); }
-
}