定義了回傳值型別為結構體的函式，之后進行回傳，在測驗時發現不能回傳data，但是改成void能夠運行到return data 之上，難道是我定義的回傳值型別不對？但是編譯時也沒有報錯啊？
SensorDataStruct* GetAccDataBatched()
{
size_t sensorCount = 0;
imuConsentGiven = CreateEvent(nullptr, true, false, nullptr);
HMODULE hrResearchMode = LoadLibraryA("ResearchModeAPI");
if (hrResearchMode)
{
typedef HRESULT(__cdecl* PFN_CREATEPROVIDER) (IResearchModeSensorDevice** ppSensorDevice);
PFN_CREATEPROVIDER pfnCreate = reinterpret_cast<PFN_CREATEPROVIDER>(GetProcAddress(hrResearchMode, "CreateResearchModeSensorDevice"));
if (pfnCreate)
{
hr = pfnCreate(&m_pSensorDevice);
}
else
{
hr = E_INVALIDARG;
}
}
m_pSensorDevice->QueryInterface(IID_PPV_ARGS(&m_pSensorDeviceConsent));
m_pSensorDeviceConsent->RequestIMUAccessAsync(ImuAccessOnComplete);
m_pSensorDevice->DisableEyeSelection();
m_pSensorDevice->GetSensorCount(&sensorCount);
m_sensorDescriptors.resize(sensorCount);
m_pSensorDevice->GetSensorDescriptors(m_sensorDescriptors.data(), m_sensorDescriptors.size(), &sensorCount);
for (auto& sensorDescriptor : m_sensorDescriptors)
{
if (sensorDescriptor.sensorType == IMU_ACCEL)
{
m_pSensorDevice->GetSensor(sensorDescriptor.sensorType, &m_pAcclSensor);
}
}
m_pAcclSensor->OpenStream();
m_pAcclSensor->GetNextBuffer(&pSensorFrame);
hr = pSensorFrame->QueryInterface(IID_PPV_ARGS(&m_pSensorAccelFrame));
// get the sensor Frame and next buffer
const AccelDataStruct* accelBuffer;
size_t BufferOutLength;
// read sensor values ...
hr = m_pSensorAccelFrame->GetCalibratedAccelarationSamples(&accelBuffer, &BufferOutLength);
//程式運行到了獲取暫存器中的資料和暫存器長度！！！！！
SensorDataStruct* data = new SensorDataStruct[BufferOutLength]; // ?
// … and copy them to return array
for (UINT i = 0; i < BufferOutLength; i++)
{
data[i].VinylHupTicks = accelBuffer[i].VinylHupTicks;
data[i].SocTicks = accelBuffer[i].SocTicks;
data[i].SensorValueX = accelBuffer[i].AccelValues[0];
data[i].SensorValueY = accelBuffer[i].AccelValues[1];
data[i].SensorValueZ = accelBuffer[i].AccelValues[2];
data[i].temperature = accelBuffer[i].temperature;
}
m_pSensorAccelFrame->Release();
return data;
}
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取地址試試：SensorDataStruct& GetAccDataBatched()//SensorDataStruct* GetAccDataBatched()
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標籤：C++ 語言