public static extern bool FindNextPrinterChangeNotification([In()] IntPtr hChangeObject,
[Out()] out Int32 pdwChange,
[In(), MarshalAs(UnmanagedType.LPStruct)] PRINTER_NOTIFY_OPTIONS pPrinterNotifyOptions,
[Out()] out IntPtr lppPrinterNotifyInfo);
public static extern IntPtr FindFirstPrinterChangeNotification([In()] IntPtr hPrinter, [In()] Int32 fwFlags,
[In()] Int32 fwOptions,
[In(), MarshalAs(UnmanagedType.LPStruct)] PRINTER_NOTIFY_OPTIONS pPrinterNotifyOptions);