MeVis/Foundation/Sources/MLUtilities/mlWMIInterface.h

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// **InsertLicense** code
//----------------------------------------------------------------------------------

//----------------------------------------------------------------------------------
#ifndef __mlWMIInterface_H
#define __mlWMIInterface_H

#ifdef WIN32

#define _WIN32_DCOM

#ifndef __mlUtilsSystem_H
#include "mlUtilsSystem.h"
#endif

#include "mlSystemWarningsDisable.h"
#include <windows.h>
#include <Wbemidl.h>
#include "mlSystemWarningsRestore.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