public static extern IntPtr SHGetFileInfo(string pszPath, uint dwFileAttributes, out SHFILEINFO psfi, uint cbFileInfo,
uint uFlags);
/// <summary>
/// Gets folder icon
/// </summary>
/// <param name="size"></param>
/// <param name="folderType"></param>
/// <returns></returns>
public static Icon GetFolderIconI(IconSize size, FolderType folderType)
{
// Need to Add size check, although errors generated at present!
uint flags = SHGFI_ICON | SHGFI_USEFILEATTRIBUTES;
if (FolderType.Open == folderType)
{
flags += SHGFI_OPENICON;
}
if (IconSize.Small == size)
{
flags += SHGFI_SMALLICON;
}
else
{
flags += SHGFI_LARGEICON;
}
// Get the folder icon
SHFILEINFO shfi = new SHFILEINFO();
IntPtr res = SHGetFileInfo(@"C:\Windows",
FILE_ATTRIBUTE_DIRECTORY,
out shfi,
(uint)Marshal.SizeOf(shfi),
flags);
if (res == IntPtr.Zero)
throw Marshal.GetExceptionForHR(Marshal.GetHRForLastWin32Error());
// Load the icon from an HICON handle
Icon.FromHandle(shfi.hIcon);
// Now clone the icon, so that it can be successfully stored in an ImageList
Icon icon = (Icon)Icon.FromHandle(shfi.hIcon).Clone();
DestroyIcon(shfi.hIcon); // Cleanup
return icon;
}