public void GetPageInfo(ref PROPPAGEINFO info)
{
info.cb = (UInt32)Marshal.SizeOf(typeof(PROPPAGEINFO));
info.size.Width = Width;
info.size.Height = Height;
info.szDocString = IntPtr.Zero;
info.szHelpFile = IntPtr.Zero;
// Caller frees this pointer
info.szTitle = (Text.Length == 0) ? IntPtr.Zero :
Marshal.StringToCoTaskMemUni(Text);
}