Registry Editing with Dev-C++

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C++

Ok, fairly new to C++ coding... I can create a window and do basic functions such as dialog boxes, text boxes, etc...

I'm trying to access the registry and put the keys in a textbox just for starters. I've tried everything from the MS site and other tutorials with no luck. The problem is that Dev just gives me errors when I try to run the given code...

Here's my recent try to just get basic registry size info...

#include <iostream> //Basic (cin, cout)
#include <string> //Basic (string.length(), etc..)
#include <clocale>
#include <windows.h>
#include <stdio.h>
using namespace std;

void clear();
int i1, i2;
DWORD dwQuotaAllowed, dwQuotaUsed;
GetSystemRegistryQuota(dwQuotaAllowed, i1);
GetSystemRegistryQuota(dwQuotaUsed, i2);

int main(int argc, char * argv[])
{
  
    /* printf( "Quota allowed: %uK, Quota used: %uK\n",
            dwQuotaAllowed/1024, dwQuotaUsed / 1024 ); */
  
  cout << "Locale Drive: " << setlocale(LC_ALL,NULL) << endl << endl;
  
  cout << "Total Allowable Registry Size: " << i1 << endl;
  cout << "Current Registry Size: " << i2 << endl;
  
  string sXit;
  int iXit = 1;
  char z;
  bool x = false;
  sXit.clear();
  do
  {
    sXit.clear();
    cout << "Exit? (y/n): ";
    getline(cin, sXit);
    if ((sXit == "") || (sXit == " "))
    {
      iXit = 1; //Default Exit = "y" if blank space or Enter key
      x = false;
      break;
    }
    z = sXit.at(0);
    switch (z) //User can answer yes or no ("y" or "n")
    {
      case 'y':
        iXit = 1;
        x = false;
        break;
      case 'n':
        iXit = 0;
        x = false;
        break;
      default:
        x = true;
    }
  } while(x);
  return 0;
}

All I get is constructor errors with GetSystemRegistryQuota, any ideas?

Reformatted, -EG-