private static void ToPtr(IntPtr pos, NotifyOptions options)
{
PRINTER_NOTIFY_OPTIONS st;
st.Flags = options.Flags;
st.Count = (uint)options.Types.Count;
st.Version = 2;
st.pTypes = pos + Marshal.SizeOf <PRINTER_NOTIFY_OPTIONS>();
Marshal.StructureToPtr(st, pos, false);
pos += Marshal.SizeOf <PRINTER_NOTIFY_OPTIONS>();
var fieldsPos = pos + (options.Types.Count * Marshal.SizeOf <PRINTER_NOTIFY_OPTIONS_TYPE>());
foreach (var optionsType in options.Types)
{
PRINTER_NOTIFY_OPTIONS_TYPE str = default;
str.Type = (UInt16)optionsType.Type;
str.Count = (UInt32)optionsType.Fields.Count;
str.pFields = fieldsPos;
Marshal.StructureToPtr(str, pos, false);
pos += Marshal.SizeOf <PRINTER_NOTIFY_OPTIONS_TYPE>();
foreach (var field in optionsType.Fields)
{
Marshal.WriteInt32(fieldsPos, field);
fieldsPos += Marshal.SizeOf(field.GetType());
}
}
}
public PRINTER_NOTIFY_OPTIONS()
{
int bytesNeeded = (2 + PRINTER_NOTIFY_OPTIONS_TYPE.JOB_FIELDS_COUNT + PRINTER_NOTIFY_OPTIONS_TYPE.PRINTER_FIELDS_COUNT) * 2;
PRINTER_NOTIFY_OPTIONS_TYPE pJobTypes = new PRINTER_NOTIFY_OPTIONS_TYPE();
lpTypes = Marshal.AllocHGlobal(bytesNeeded);
Marshal.StructureToPtr(pJobTypes, lpTypes, true);
}
