public static extern IntPtr SHGetFileInfo(string pszPath, uint dwFileAttributes, out SHFileInfo psfi, uint cbFileInfo, uint uFlags);
public static Icon GetIcon(string path, ItemType type, IconSize size, ItemState state)
{
var flags = (uint)(Interop.SHGFI_ICON | Interop.SHGFI_USEFILEATTRIBUTES);
var attribute = (uint)(object.Equals(type, ItemType.Folder) ? Interop.FILE_ATTRIBUTE_DIRECTORY : Interop.FILE_ATTRIBUTE_FILE);
if (object.Equals(type, ItemType.Folder) && object.Equals(state, ItemState.Open))
{
flags += Interop.SHGFI_OPENICON;
}
if (object.Equals(size, IconSize.Small))
{
flags += Interop.SHGFI_SMALLICON;
}
else
{
flags += Interop.SHGFI_LARGEICON;
}
var shfi = new SHFileInfo();
var res = Interop.SHGetFileInfo(path, attribute, out shfi, (uint)Marshal.SizeOf(shfi), flags);
if (object.Equals(res, IntPtr.Zero)) throw Marshal.GetExceptionForHR(Marshal.GetHRForLastWin32Error());
try
{
Icon.FromHandle(shfi.hIcon);
return (Icon)Icon.FromHandle(shfi.hIcon).Clone();
}
finally
{
Interop.DestroyIcon(shfi.hIcon);
}
}
public static extern IntPtr SHGetFileInfo(string pszPath, uint dwFileAttributes, out SHFileInfo psfi, uint cbFileInfo, uint uFlags);