/// <summary>
/// Open a printer or server.
/// </summary>
/// <param name="printer_name">The name of the printer or server. If this is null or empty then it's the local server.</param>
/// <param name="desired_access">The desired access on the printer.</param>
/// <param name="throw_on_error">True to throw on error.</param>
/// <returns>The opened printer.</returns>
public static NtResult <PrinterObject> OpenPrinter(string printer_name, PrintSpoolerAccessRights desired_access, bool throw_on_error)
{
PRINTER_DEFAULTS defs = new PRINTER_DEFAULTS();
defs.DesiredAccess = desired_access;
return(PrintingNativeMethods.OpenPrinter(printer_name, out IntPtr handle, defs).CreateWin32Result(throw_on_error, () => new PrinterObject(handle, printer_name)));
}
/// <summary>
/// Dispose the printer object.
/// </summary>
public void Dispose()
{
if (_handle != IntPtr.Zero)
{
PrintingNativeMethods.ClosePrinter(_handle);
}
}
/// <summary>
/// Get security descriptor for the printer.
/// </summary>
/// <param name="throw_on_error">True to throw on error.</param>
/// <returns>The printer's security descriptor.</returns>
public NtResult <SecurityDescriptor> GetSecurityDescriptor(bool throw_on_error)
{
PrintingNativeMethods.GetPrinter(_handle, 3, SafeHGlobalBuffer.Null, 0, out int length);
using (var buffer = new SafeStructureInOutBuffer <PRINTER_INFO_3>(length, false))
{
var error = PrintingNativeMethods.GetPrinter(_handle, 3, buffer, length, out length).GetLastWin32Error();
if (error != Win32Error.SUCCESS)
{
return(error.CreateResultFromDosError <SecurityDescriptor>(throw_on_error));
}
return(SecurityDescriptor.Parse(buffer.Result.pSecurityDescriptor, _type, throw_on_error));
}
}
