public static extern IntPtr SHGetFileInfo([MarshalAs(UnmanagedType.LPTStr)] string pszPath, FileAttributes dwFileAttributes, ref SHFILEINFO psfi, uint cbFileInfo, ShellFileFlags uFlags);
/// <summary>
/// Retrieves information about an object in the file system, such as a file, folder, directory, or drive root.
/// </summary>
/// <param name="pszPath">The path and file name. Both absolute and relative paths are valid.</param>
/// <param name="fileAttributes">A combination of one or more file attribute flags.</param>
/// <param name="psfi">A SHFILEINFO structure to receive the file information.</param>
/// <param name="cbFileInfo">The size, in bytes, of the SHFILEINFO structure pointed to by the psfi parameter.</param>
/// <param name="flags">The flags that specify the file information to retrieve.</param>
/// <returns></returns>
public static IntPtr SHGetFileInfo(string pszPath, FileAttributes fileAttributes, ref SHFILEINFO psfi, uint cbFileInfo, ShellFileFlags flags)
{
return NativeMethods.SHGetFileInfo(pszPath, fileAttributes, ref psfi, cbFileInfo, flags);
}
private static SHFILEINFO GetFolderIconSHInfo(IconSize size, FolderType folderType)
{
// Need to add size check, although errors generated at present!
var flags = ShellFileFlags.SHGFI_ICON | ShellFileFlags.SHGFI_USEFILEATTRIBUTES;
if (FolderType.Open == folderType)
{
flags |= ShellFileFlags.SHGFI_OPENICON;
}
if (IconSize.Small == size)
{
flags |= ShellFileFlags.SHGFI_SMALLICON;
}
else
{
flags |= ShellFileFlags.SHGFI_LARGEICON;
}
// Get the folder icon
var info = new SHFILEINFO();
Shell32.SHGetFileInfo(Environment.GetFolderPath(Environment.SpecialFolder.System), FileManagement.FileAttributes.FILE_ATTRIBUTE_DIRECTORY, ref info, (uint)Marshal.SizeOf(info), flags);
return info;
}
private static Icon GetIcon(ref SHFILEINFO info)
{
Icon clone = null;
if (info.hIcon != IntPtr.Zero)
{
try
{
using (var icon = Icon.FromHandle(info.hIcon))
{
clone = (Icon)icon.Clone();
}
}
finally
{
User32.DestroyIcon(info.hIcon);
}
}
return clone;
}
private static SHFILEINFO GetFileIconSHInfo(string name, IconSize size, bool linkOverlay)
{
var flags = ShellFileFlags.SHGFI_ICON | ShellFileFlags.SHGFI_USEFILEATTRIBUTES;
if (linkOverlay) { flags |= ShellFileFlags.SHGFI_LINKOVERLAY; }
/* Check the size specified for return. */
if (size == IconSize.Small)
{
flags |= ShellFileFlags.SHGFI_SMALLICON;
}
else
{
flags |= ShellFileFlags.SHGFI_LARGEICON;
}
var info = new SHFILEINFO();
Shell32.SHGetFileInfo(name, FileManagement.FileAttributes.FILE_ATTRIBUTE_NORMAL, ref info, (uint)Marshal.SizeOf(info), flags);
return info;
}
