C++ 无法访问类'；Windows:：Devices:：Sensors:：加速计'；

我有以下代码：

加速计DELEGATE.h

#pragma once
#include "pch.h"

using Windows::Devices::Sensors::Accelerometer;
using Windows::Devices::Sensors::AccelerometerReading;

ref class AccelerometerDelegate sealed
{
public:
    double GetX();
    double GetY();
    double GetZ();
    AccelerometerDelegate();
    void GetCurrentReading();
private:
    Accelerometer ^ accelerometer;
    AccelerometerReading ^ accelerometerReading;
};

#pragma once

#include "pch.h"
#include "CubeRenderer.h"
#include "AccelerometerDelegate.h"

ref class Game sealed : public Windows::ApplicationModel::Core::IFrameworkView
{
public:
    Game();
    ...    
private:
    AccelerometerDelegate ^ accelerometer;
    ...
};

加速计数据传输.cpp

#include "pch.h"
#include "AccelerometerDelegate.h"

AccelerometerDelegate::AccelerometerDelegate()
{
    accelerometer = ref new Accelerometer();
}

void AccelerometerDelegate::GetCurrentReading()
{
    accelerometerReading = accelerometer->GetCurrentReading();
}

double AccelerometerDelegate::GetX()
{
    return accelerometerReading->AccelerationX;
}

double AccelerometerDelegate::GetY()
{
    return accelerometerReading->AccelerationY;
}

double AccelerometerDelegate::GetZ()
{
    return accelerometerReading->AccelerationZ;
}

void Game::Initialize(CoreApplicationView^ applicationView)
{
    ...             
    accelerometer = ref new AccelerometerDelegate();
}

构造声明引发编译错误：

Error   1   error C2248: 'Windows::Devices::Sensors::Accelerometer::Accelerometer' : cannot access private member declared in class 'Windows::Devices::Sensors::Accelerometer'  

我在游戏课上称之为：

Game.h

#pragma once
#include "pch.h"

using Windows::Devices::Sensors::Accelerometer;
using Windows::Devices::Sensors::AccelerometerReading;

ref class AccelerometerDelegate sealed
{
public:
    double GetX();
    double GetY();
    double GetZ();
    AccelerometerDelegate();
    void GetCurrentReading();
private:
    Accelerometer ^ accelerometer;
    AccelerometerReading ^ accelerometerReading;
};

#pragma once

#include "pch.h"
#include "CubeRenderer.h"
#include "AccelerometerDelegate.h"

ref class Game sealed : public Windows::ApplicationModel::Core::IFrameworkView
{
public:
    Game();
    ...    
private:
    AccelerometerDelegate ^ accelerometer;
    ...
};

Game.cpp

#include "pch.h"
#include "AccelerometerDelegate.h"

AccelerometerDelegate::AccelerometerDelegate()
{
    accelerometer = ref new Accelerometer();
}

void AccelerometerDelegate::GetCurrentReading()
{
    accelerometerReading = accelerometer->GetCurrentReading();
}

double AccelerometerDelegate::GetX()
{
    return accelerometerReading->AccelerationX;
}

double AccelerometerDelegate::GetY()
{
    return accelerometerReading->AccelerationY;
}

double AccelerometerDelegate::GetZ()
{
    return accelerometerReading->AccelerationZ;
}

void Game::Initialize(CoreApplicationView^ applicationView)
{
    ...             
    accelerometer = ref new AccelerometerDelegate();
}

你知道为什么会这样吗

• 加速计内置在windows phone命名空间中：windows:：Devices:：Sensors
• 其声明如下：

  public : ref class Accelerometer sealed
      Member of Windows::Devices::Sensors
  
  Summary:
  Represents an accelerometer sensor.
  
  Attributes:
  [Windows::Foundation::Metadata::DualApiPartitionAttribute(version = 100794368),
  Windows::Foundation::Metadata::VersionAttribute]
  

---

似乎是一个单件，您必须使用

Accelerator:：GetDefault（）检索它。

看