#include <cstdlib>
#include <iostream>
#include "windows.h"
#include "winnt.h"
#include "winreg.h"
 
using namespace std;
 
int main(int argc, char *argv[])
{
    HKEY MyKey;
 
    char szBuff[80];
    LONG cb;
 
    if (RegOpenKey(HKEY_CURRENT_USER, "Software\\Random\\Program", &MyKey) == ERROR_SUCCESS)
    {
       cout << "Program is installed\n";
       cb = sizeof(szBuff);
 
       //Debug info, this normally isn't here!
       printf("%d",RegQueryValue(MyKey, "hexData", szBuff, &cb) );
       cout << '\n';
 
       if(RegQueryValue(MyKey, "hexData, szBuff, &cb) == ERROR_SUCCESS)
       {
          cout << "Program has been run once\n";
          printf(szBuff);
       }
 
       RegCloseKey(MyKey);
    }
 
    system("PAUSE");
    return EXIT_SUCCESS;
}