migrate Pilz.Win32 & optimize Pilz & Pilz.IO

Pilz.Win32/Native/SHFILEINFO.cs

@@ -0,0 +1,46 @@
+using System.Runtime.InteropServices;
+
+namespace Pilz.Win32.Native;
+
+
+/// <summary>
+/// Contains information about a file object. 
+/// </summary>
+[StructLayout(LayoutKind.Sequential)]
+public struct SHFILEINFO
+{
+    public const uint SHGFI_ICON = 0x100U;
+    public const uint SHGFI_LARGEICON = 0x0U;
+    public const uint SHGFI_SMALLICON = 0x1U;
+    /// <summary>
+    /// Handle to the icon that represents the file. You are responsible for
+    /// destroying this handle with DestroyIcon when you no longer need it. 
+    /// </summary>
+    public nint hIcon;
+
+    /// <summary>
+    /// Index of the icon image within the system image list.
+    /// </summary>
+    public nint iIcon;
+
+    /// <summary>
+    /// Array of values that indicates the attributes of the file object.
+    /// For information about these values, see the IShellFolder::GetAttributesOf
+    /// method.
+    /// </summary>
+    public uint dwAttributes;
+
+    /// <summary>
+    /// String that contains the name of the file as it appears in the Microsoft
+    /// Windows Shell, or the path and file name of the file that contains the
+    /// icon representing the file.
+    /// </summary>
+    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
+    public string szDisplayName;
+
+    /// <summary>
+    /// String that describes the type of file.
+    /// </summary>
+    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
+    public string szTypeName;
+}