mlWMIInterface.h

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/*************************************************************************************
**
** Copyright 2011, MeVis Medical Solutions AG
**
** The user may use this file in accordance with the license agreement provided with
** the Software or, alternatively, in accordance with the terms contained in a
** written agreement between the user and MeVis Medical Solutions AG.
**
** For further information use the contact form at https://www.mevislab.de/contact
**
**************************************************************************************/
 
#ifndef ML_WMIINTERFACE_H
#define ML_WMIINTERFACE_H
 
 
#include <string>
 
#ifdef WIN32
 
#define _WIN32_DCOM
 
#include "mlUtilsSystem.h"
 
#include <ThirdPartyWarningsDisable.h>
#include <windows.h>
#include <Wbemidl.h>
#include <ThirdPartyWarningsRestore.h>
 
ML_UTILS_START_NAMESPACE
 
class ML_UTILS_EXPORT WMIInterface {
 
public:
  static WMIInterface* self();
 
  static void init();
  static void cleanup();
 
  std::string queryWMIString(const char* wmiClassName, const char* wmiProperty);
 
  MLuint32    queryWMIuint32(const char* wmiClassName, const char* wmiProperty);
 
private:
  WMIInterface();
  ~WMIInterface();
 
private:
  static WMIInterface* _self;
 
  bool initWMI();
  void cleanupWMI();
 
  bool _valid;
  bool _needsUninitialize;
 
  IWbemLocator*  _locator;
  IWbemServices* _services;
 
  VARIANT* queryWMI(const char* wmiClassName, const char* wmiProperty);
 
  void deleteVariant(VARIANT* var);
 
};
 
ML_UTILS_END_NAMESPACE
 
#endif // WIN32
 
#endif // __mlWMIInterface_H