mirror of https://github.com/dahall/Vanara.git
40 lines
1.2 KiB
C#
40 lines
1.2 KiB
C#
using System;
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using System.Drawing;
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using System.IO;
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using System.Runtime.InteropServices;
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using static Vanara.PInvoke.ComCtl32;
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using static Vanara.PInvoke.Shell32;
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using static Vanara.PInvoke.User32_Gdi;
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namespace Vanara.Windows.Shell
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{
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public static class ShellImageList
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{
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private static IntPtr largeImageListHandle;
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private static IntPtr smallImageListHandle;
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static ShellImageList()
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{
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const SHGFI baseFlags = SHGFI.SHGFI_USEFILEATTRIBUTES | SHGFI.SHGFI_SYSICONINDEX;
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var shfiSz = Marshal.SizeOf(typeof(SHFILEINFO));
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var shfiSmall = new SHFILEINFO();
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smallImageListHandle = SHGetFileInfo(".txt", FileAttributes.Normal, ref shfiSmall, shfiSz, baseFlags | SHGFI.SHGFI_SMALLICON);
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var shfiLarge = new SHFILEINFO();
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largeImageListHandle = SHGetFileInfo(".txt", FileAttributes.Normal, ref shfiLarge, shfiSz, baseFlags | SHGFI.SHGFI_LARGEICON);
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}
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public static Icon GetIcon(int index, bool small = true)
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{
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var hIcon = ImageList_GetIcon(small ? smallImageListHandle : largeImageListHandle, index, IMAGELISTDRAWFLAGS.ILD_NORMAL);
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if (hIcon == IntPtr.Zero) return null;
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var icon = Icon.FromHandle(hIcon);
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var ret = (Icon)icon.Clone();
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DestroyIcon(hIcon);
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return ret;
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}
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}
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}
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