c++ - Bluetooth Low Energy on Windows

i wanted write program receiving data every 10ms on bluetooth low energy.

i lot of things work, have 1 problem , can´t find source. here basis of code written in c++builder 10 on windows 10.

> //---------------------------------------------------------------------------  #include <vcl.h> #pragma hdrstop  #include "unit1.h" //--------------------------------------------------------------------------- #pragma package(smart_init)  #define characteristic_uuid "{6e400003-b5a3-f393-e0a9-e50e24dcca9e}" #define service_uuid        "{6e400001-b5a3-f393-e0a9-e50e24dcca9e}" #pragma resource "*.dfm"    tform1 *form1; tbluetoothledevice* device; tbluetoothgattcharacteristiclist* characteristic ; //--------------------------------------------------------------------------- __fastcall tform1::tform1(tcomponent* owner)     : tform(owner) {      bluetoothle1->discoverdevices(100); } //--------------------------------------------------------------------------- void __fastcall tform1::bluetoothle1enddiscoverdevices(tobject * const sender, tbluetoothledevicelist * const adevicelist)  {              device = adevicelist->first();      bluetoothle1->discoverservices(device); } //--------------------------------------------------------------------------- void __fastcall tform1::bluetoothle1servicesdiscovered(tobject * const sender, tbluetoothgattservicelist * const aservicelist)  {             guid aguid;     clsidfromstring(text(service_uuid), &aguid);     tbluetoothgattservice* service = bluetoothle1->getservice(device,aguid);     //tbluetoothgattservicelist* abcd = bluetoothle1->getservices(device);       clsidfromstring(text(characteristic_uuid), &aguid);     characteristic = bluetoothle1->getcharacteristics(service);     while(characteristic->first()->uuid != aguid)     {            characteristic->delete(0);      }     if(characteristic->first()!= null);         bluetoothle1->subscribetocharacteristic(device,characteristic->first()); } //--------------------------------------------------------------------------- void __fastcall tform1::bluetoothle1characteristicread(tobject * const sender, tbluetoothgattcharacteristic * const acharacteristic,           tbluetoothgattstatus agattstatus)  {     static long i;      label1->caption = i;     i++; } //--------------------------------------------------------------------------- 

after 86303 notifys (calling bluetoothle1characteristicread) stack overflow. there must wrong. @ beginning wrote program in visual studio in c++ windows drivers functions, same thing.

i have found problem. bug in win32 bluetooth apis. windows update kb3156421 every program crashes after 1 notification , mircosoft gives workaround. link

that workaround fixes problem above too.