// GUID has to be different for every plugin as it is used to separate plugins from each other.
// Visual Studio includes a program called guidgen.exe to generate unique GUIDs.
// There are also other GUID generators available.
// GUID Format used here is the registry format.
#define PLUGINGUID "{10D593F7-5FA9-49e8-A77C-73C83140E6EE}"

#define PLUGINNAME "System information"
#define PLUGINDESCRIPTION "Longer description for System information if needed"
#define PLUGINVERSION "0.1 alpha"
#define PLUGINDATE "9.12.2003"
#define PLUGINAUTHOR "Someone"
#define PLUGINEMAIL "someone@somewhere.com"

// Name for the DataSource
#define DATANAME "SysInfo"

#include "..\sdk\component.h" // required
#include "..\sdk\plugin.h" // required
#include "..\sdk\data.h" // for DataSource
// #include "..\sdk\configure.h" // save and get setting values

#include "windows.h"
MEMORYSTATUS MemStatus;

// class derived from IPlugin is required for every plugin even if you don't use it yourself
class Plugin : public IPlugin
{
   virtual void __stdcall onCreate(void)
   {
      // do startup stuff here
   }

   virtual void __stdcall onDestroy(void)
   {
      // do things needed before destroying plugin

   }
};

// derive class from DataSource to make a data plugin
class Data : public DataSource
{
   virtual void __stdcall onCreate(void)
   {
      // add your own variables here
      addVar("SysInfo.TotalMemory",         "Total memory",      VAR_INT);
      addVar("SysInfo.AvailableMemory",      "Available memory", VAR_INT);
   }

   virtual void __stdcall onDestroy(void)
   {
   }

   virtual int __stdcall configure(void)
   {
      return -1;
   }

   virtual void __stdcall getValue(int varNo, Value value)
   {
      // depending of the plugin using switch may not work. like for unknown number of variables.
      // use your imagination ;)
      switch(varNo)
      {
         case 0:
         {
            GlobalMemoryStatus(&MemStatus);
            int tmp = MemStatus.dwTotalPhys/1024;
            value = tmp;
            break;
         }

         case 1:
         {
            GlobalMemoryStatus(&MemStatus);
            int tmp = MemStatus.dwAvailPhys/1024;
            value = tmp;
            break;
         }

      
      }
   }

private:

   
};

// IMPORTANT: without this your class won't be included in the plugin
// SYNTAX: RegisterFactory<Interface, YourDerivedClass> something;
static RegisterFactory<IPlugin, Plugin> plugin;
static RegisterFactory<IData, Data> data;

// saving settings
writeSettingInt("MYINTEGER", 3);
writeSettingFloat("MYFLOATINGPOINT", 3.45);
writeSettingString("MYSTRING", "characters here");

// reading settings
int a = readSettingInt("MYINTEGER");
double b = readSettingFloat("MYFLOATINGPOINT");

char c[256];
readSettingString("MYSTRING", c);