C / C++ / MFC

#define _WIN32_WINNT (0x0601)
#include <windows.h>
#include <winbase.h>
#include <winreg.h>
#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
// REGISTRY PORTION
    DWORD pdwQuotaAllowed, pdwQuotaUsed;
    GetSystemRegistryQuota(&pdwQuotaAllowed, &pdwQuotaUsed);

// Backup Current Registry
// Open Registry Key (RegGetValue)
   DWORD dwFlags;
   RegGetValue(&dwFlags);
// Delete Contents of the Key (RegDeleteValue)
// Write New Content of the key (RegSetValueEx)
// Close Registry Handle (RegCloseKey)

    
    
    
// DISPLAY RESULTS
    cout << pdwQuotaAllowed << endl; 
    cout << pdwQuotaUsed << endl;
return 0;
}