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添加项目文件。

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liufei
2021-04-12 13:46:05 +08:00
parent b2b912a812
commit cc399e2ef7
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Util/SystemIcon.cs Normal file
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Drawing;
using Microsoft.Win32;
using System.Runtime.InteropServices;
using System.Drawing.Imaging;
using GeekDesk.Util;
namespace GeekDesk.Util
{
class SystemIcon
{
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
public struct SHFILEINFO
{
public IntPtr hIcon;
public int iIcon;
public uint dwAttributes;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
public string szDisplayName;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
public string szTypeName;
}
[DllImport("Shell32.dll", EntryPoint = "SHGetFileInfo", SetLastError = true, CharSet = CharSet.Auto)]
public static extern IntPtr SHGetFileInfo(string pszPath, uint dwFileAttributes, ref SHFILEINFO psfi, uint cbFileInfo, uint uFlags);
[DllImport("User32.dll", EntryPoint = "DestroyIcon")]
public static extern int DestroyIcon(IntPtr hIcon);
#region API 参数的常量定义
public enum FileInfoFlags : uint
{
SHGFI_ICON = 0x000000100, // get icon
SHGFI_DISPLAYNAME = 0x000000200, // get display name
SHGFI_TYPENAME = 0x000000400, // get type name
SHGFI_ATTRIBUTES = 0x000000800, // get attributes
SHGFI_ICONLOCATION = 0x000001000, // get icon location
SHGFI_EXETYPE = 0x000002000, // return exe type
SHGFI_SYSICONINDEX = 0x000004000, // get system icon index
SHGFI_LINKOVERLAY = 0x000008000, // put a link overlay on icon
SHGFI_SELECTED = 0x000010000, // show icon in selected state
SHGFI_ATTR_SPECIFIED = 0x000020000, // get only specified attributes
SHGFI_LARGEICON = 0x000000000, // get large icon
SHGFI_SMALLICON = 0x000000001, // get small icon
SHGFI_OPENICON = 0x000000002, // get open icon
SHGFI_SHELLICONSIZE = 0x000000004, // get shell size icon
SHGFI_PIDL = 0x000000008, // pszPath is a pidl
SHGFI_USEFILEATTRIBUTES = 0x000000010, // use passed dwFileAttribute
SHGFI_ADDOVERLAYS = 0x000000020, // apply the appropriate overlays
SHGFI_OVERLAYINDEX = 0x000000040 // Get the index of the overlay
}
public enum FileAttributeFlags : uint
{
FILE_ATTRIBUTE_READONLY = 0x00000001,
FILE_ATTRIBUTE_HIDDEN = 0x00000002,
FILE_ATTRIBUTE_SYSTEM = 0x00000004,
FILE_ATTRIBUTE_DIRECTORY = 0x00000010,
FILE_ATTRIBUTE_ARCHIVE = 0x00000020,
FILE_ATTRIBUTE_DEVICE = 0x00000040,
FILE_ATTRIBUTE_NORMAL = 0x00000080,
FILE_ATTRIBUTE_TEMPORARY = 0x00000100,
FILE_ATTRIBUTE_SPARSE_FILE = 0x00000200,
FILE_ATTRIBUTE_REPARSE_POINT = 0x00000400,
FILE_ATTRIBUTE_COMPRESSED = 0x00000800,
FILE_ATTRIBUTE_OFFLINE = 0x00001000,
FILE_ATTRIBUTE_NOT_CONTENT_INDEXED = 0x00002000,
FILE_ATTRIBUTE_ENCRYPTED = 0x00004000
}
#endregion
/// <summary>
/// 获取文件类型的关联图标
/// </summary>
/// <param name="fileName">文件类型的扩展名或文件的绝对路径</param>
/// <param name="isLargeIcon">是否返回大图标</param>
/// <returns>获取到的图标</returns>
public static Icon GetIcon(string fileName, bool isLargeIcon)
{
//SHFILEINFO shfi = new SHFILEINFO();
//IntPtr hI;
//if (isLargeIcon)
// hI = SHGetFileInfo(fileName, 0, ref shfi, (uint)Marshal.SizeOf(shfi), (uint)FileInfoFlags.SHGFI_ICON | (uint)FileInfoFlags.SHGFI_USEFILEATTRIBUTES | (uint)FileInfoFlags.SHGFI_LARGEICON);
//else
// hI = SHGetFileInfo(fileName, 0, ref shfi, (uint)Marshal.SizeOf(shfi), (uint)FileInfoFlags.SHGFI_ICON | (uint)FileInfoFlags.SHGFI_USEFILEATTRIBUTES | (uint)FileInfoFlags.SHGFI_SMALLICON);
//Icon icon = Icon.FromHandle(shfi.hIcon).Clone() as Icon;
//DestroyIcon(shfi.hIcon); //释放资源
//选中文件中的图标总数
//var iconTotalCount = PrivateExtractIcons(fileName, 0, 0, 0, null, null, 1, 0);
//用于接收获取到的图标指针
//IntPtr[] hIcons = new IntPtr[1];
////对应的图标id
//int[] ids = new int[1];
////成功获取到的图标个数
//int successCount = PrivateExtractIcons(fileName, 0, 0, 0, hIcons, ids, 1, 0);
//Icon ico = Icon.FromHandle(hIcons[0]);
//var myIcon = ico.ToBitmap();
//myIcon.Save("D:\\" + ids[0].ToString("000") + ".png", ImageFormat.Png);
IntPtr hIcon = FileIcon.GetJumboIcon(FileIcon.GetIconIndex(fileName));
//IntPtr hIcon = GetJumboIcon(GetIconIndex("*." + ext));
// from native to managed
Icon ico = Icon.FromHandle(hIcon);
string path = "D:\\test\\" + System.Guid.NewGuid().ToString() + ".png";
//using ( ico = (Icon)Icon.FromHandle(hIcon).Clone())
//{
// // save to file (or show in a picture box)
// ico.ToBitmap().Save(path, ImageFormat.Png);
//}
//FileIcon.Shell32.DestroyIcon(hIcon); // don't forget to cleanup
return ico;
}
/// <summary>
/// 获取文件夹图标
/// </summary>
/// <returns>图标</returns>
public static Icon GetDirectoryIcon(bool isLargeIcon)
{
SHFILEINFO _SHFILEINFO = new SHFILEINFO();
IntPtr _IconIntPtr;
if (isLargeIcon)
{
_IconIntPtr = SHGetFileInfo(@"", 0, ref _SHFILEINFO, (uint)Marshal.SizeOf(_SHFILEINFO), ((uint)FileInfoFlags.SHGFI_ICON | (uint)FileInfoFlags.SHGFI_LARGEICON));
}
else
{
_IconIntPtr = SHGetFileInfo(@"", 0, ref _SHFILEINFO, (uint)Marshal.SizeOf(_SHFILEINFO), ((uint)FileInfoFlags.SHGFI_ICON | (uint)FileInfoFlags.SHGFI_SMALLICON));
}
if (_IconIntPtr.Equals(IntPtr.Zero)) return null;
Icon _Icon = System.Drawing.Icon.FromHandle(_SHFILEINFO.hIcon);
return _Icon;
}
[DllImport("User32.dll")]
public static extern int PrivateExtractIcons(
string lpszFile, //file name
int nIconIndex, //The zero-based index of the first icon to extract.
int cxIcon, //The horizontal icon size wanted.
int cyIcon, //The vertical icon size wanted.
IntPtr[] phicon, //(out) A pointer to the returned array of icon handles.
int[] piconid, //(out) A pointer to a returned resource identifier.
int nIcons, //The number of icons to extract from the file. Only valid when *.exe and *.dll
int flags //Specifies flags that control this function.
);
//[DllImport("User32.dll")]
//public static extern bool DestroyIcon(
// IntPtr hIcon //A handle to the icon to be destroyed. The icon must not be in use.
// );
}
}