void myCyDeviceGetHandle()
{
//uses myCyDeviceNumber as global var, and store result to HANDLE hCyDevice (global)
//if (hCyDevice == INVALID_HANDLE_VALUE) myMesShow(_T("hDevice=null."));
//hCyDevice = (HANDLE)0xF0F0FAFA;
//return;
SP_DEVINFO_DATA devInfoData;
SP_DEVICE_INTERFACE_DATA devInterfaceData;
PSP_INTERFACE_DEVICE_DETAIL_DATA functionClassDeviceData;

ULONG requiredLength = 0;
//int deviceNumber = 0;//set to 0 for init data for first interface - use global myCyDeviceNumber

HDEVINFO hwDeviceInfo = INVALID_HANDLE_VALUE;

if(myWinUSB)
{
    if(myAll_IDwinusb)
    {
hwDeviceInfo = SetupDiGetClassDevs ( (LPGUID) &commonWINUSBinterface_GUID,
NULL,
NULL,
DIGCF_PRESENT|DIGCF_INTERFACEDEVICE);
    }
    else//unique guid
    {
hwDeviceInfo = SetupDiGetClassDevs ( (LPGUID) &myWINUSBinterfaceUnic_GUID,
NULL,
NULL,
DIGCF_PRESENT|DIGCF_INTERFACEDEVICE);
    }
}
else//standard cypress driver
{
hwDeviceInfo = SetupDiGetClassDevs ( (LPGUID) &CYUSBDRV_GUID,
NULL,
NULL,
DIGCF_PRESENT|DIGCF_INTERFACEDEVICE);
}

//exit if driver cypress not installed??? - not, always returned some, must be destroyed.
if (hwDeviceInfo == INVALID_HANDLE_VALUE)
{if(0 == myCyDeviceNumber) myMesShow(_T("SetupDiGetClassDevs failed.")); return;}

devInterfaceData.cbSize = sizeof(devInterfaceData);//compatibility??

BOOL result;
if(myWinUSB)
{
    if(myAll_IDwinusb)
    { result = SetupDiEnumDeviceInterfaces ( hwDeviceInfo, 0, (LPGUID) &commonWINUSBinterface_GUID, myCyDeviceNumber, &devInterfaceData);}
    else//unique guid
    { result = SetupDiEnumDeviceInterfaces ( hwDeviceInfo, 0, (LPGUID) &myWINUSBinterfaceUnic_GUID, myCyDeviceNumber, &devInterfaceData);}
}
else result = SetupDiEnumDeviceInterfaces ( hwDeviceInfo, 0, (LPGUID) &CYUSBDRV_GUID, myCyDeviceNumber, &devInterfaceData);//standard cypress driver
if (!result)
{
//myMesShow(_T("SetupDiEnumDeviceInterfaces failed.")); //but need destroy HDEVINFO
if(0 == myCyDeviceNumber){ if(myWinUSB) myMesShow(_T("WinUSB driver not active.")); else myMesShow(_T("CyUSB driver not active."));}//driver not found by GUID!
SetupDiDestroyDeviceInfoList(hwDeviceInfo); return;}
//next function must be error by design!!!
SetupDiGetInterfaceDeviceDetail ( hwDeviceInfo, &devInterfaceData, NULL, 0, &requiredLength, NULL);
//return error - this is normal!!!???

ULONG predictedLength = requiredLength;
functionClassDeviceData = (PSP_INTERFACE_DEVICE_DETAIL_DATA) malloc (predictedLength +4);//+4 for safety
functionClassDeviceData->cbSize = sizeof (SP_INTERFACE_DEVICE_DETAIL_DATA);
devInfoData.cbSize = sizeof(devInfoData);

if (!SetupDiGetInterfaceDeviceDetail (hwDeviceInfo, &devInterfaceData, functionClassDeviceData,
predictedLength, &requiredLength, &devInfoData))
{if(0 == myCyDeviceNumber) myMesShow(_T("SetupDiGetInterfaceDeviceDetail failed.")); //but need destroy HDEVINFO
free(functionClassDeviceData); SetupDiDestroyDeviceInfoList(hwDeviceInfo); return;}
if (hCyDevice != INVALID_HANDLE_VALUE) myMesShow(_T("- handle leaking !"));
//rcv handle...(any vid-pid return handle!)
hCyDevice = CreateFile (functionClassDeviceData->DevicePath, GENERIC_WRITE | GENERIC_READ,
FILE_SHARE_WRITE | FILE_SHARE_READ,
//NULL, OPEN_EXISTING, 0, NULL);//non-overlapped mode
NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL);

free(functionClassDeviceData);
SetupDiDestroyDeviceInfoList(hwDeviceInfo);

if(!myWinUSB) return;
if (hCyDevice == INVALID_HANDLE_VALUE) return;
if (hWinusbInterface != INVALID_HANDLE_VALUE) myMesShow(_T("- handle leaking 2 !"));
if(myWinUSB_Open()) return;//OK
myMesShow(_T("- WINUSB INIT ERROR !"));//
    CloseHandle(hCyDevice);
    hCyDevice = INVALID_HANDLE_VALUE;
}//end myCyDeviceGetHandle

bool myWinUSB_Open()
{
if (hCyDevice == INVALID_HANDLE_VALUE) return false;
if(myWinusbDllModule == NULL){ if(!myWINUSB_Load()) return false;}
if(myWinUsb_Initialize(hCyDevice,&hWinusbInterface))
{
ULONG Value3 = 2000;
BOOL Value4 = TRUE;
BOOL Value5 = FALSE;

myWinUsb_SetPipePolicy(hWinusbInterface,0x02,3,sizeof(Value3),&Value3);
myWinUsb_SetPipePolicy(hWinusbInterface,0x86,3,sizeof(Value3),&Value3);
myWinUsb_SetPipePolicy(hWinusbInterface,0x86,4,sizeof(Value4),&Value4);
myWinUsb_SetPipePolicy(hWinusbInterface,0x86,5,sizeof(Value5),&Value5);

return true;
}
hWinusbInterface = INVALID_HANDLE_VALUE;
return false;
}//end myWinUSB_Open