public static IntPtr ToStructurePointer(this devinfo_t value)
{
var size = Marshal.SizeOf(value);
var pointer = Marshal.AllocHGlobal(size);
Marshal.StructureToPtr(value, pointer, true);
return(pointer);
}
/// <summary>
/// 打包
/// </summary>
static (IntPtr ptr, int len) Pack()
{
var device = new DeviceInfo()
{
DEVINFO_TYPE_DID = "005",
DEVINFO_TYPE_DEV_PRI_KEY = "dsajfdscSjdfaDDSKCNkdajcnAS11AS_",
};
// 获取设备类型元数据
var type = typeof(DeviceInfo);
var props = type.GetProperties();
// 设备结构体
var devInfo = new devinfo_t
{
filed = new string_t[props.Length],
};
// 设置devinfo_t结构
for (int i = 0; i < props.Length; i++)
{
var s = (string)props[i].GetValue(device) ?? string.Empty;
string_assign(out var st, s, s.Length);
devInfo.filed[i] = st;
}
//for (int i = 0; i < devInfo.filed.Length; i++)
//{
// var field = devInfo.filed[i];
// var s = Marshal.PtrToStringUTF8(field.s, field.len);
//}
// 打包为二进制数据
var ptr = devInfo.ToStructurePointer();
var pointer = HeyThings_devinfo_pack(ptr, 0, out var len);
Console.WriteLine($"len: {len.ToString()}, ptr: {pointer.ToString()}");
var data = new byte[len];
Marshal.Copy(pointer, data, 0, len);
Console.WriteLine($"Data: {BitConverter.ToString(data)}");
return(pointer, len);
}