Работа в реестре

#include <iostream>
#include <iomanip>
#include <string>
#include <windows.h>
#include <stdlib.h>
using namespace std;
 
void showInVariablesInRegistry(HKEY);
char Path[256], Root[256];
int main(){
    HKEY hKey;
    cout << "Root: ";
    cin >> Root;
    cin.sync();
    cout << "Key: ";
    cin >> Path; // branch
    cin.sync(); // so cin eat's spaces
    if (strcmp(Root, "HKEY_CLASSES_ROOT") == 0){
        RegOpenKeyEx(HKEY_CLASSES_ROOT, Path, 0, KEY_READ, &hKey);
    }
    else if (strcmp(Root, "HKEY_CURRENT_USER") == 0){
        RegOpenKeyEx(HKEY_CURRENT_USER, Path, 0, KEY_READ, &hKey);
    }
    else if (strcmp(Root, "HKEY_LOCAL_MACHINE") == 0){
        RegOpenKeyEx(HKEY_LOCAL_MACHINE, Path, 0, KEY_READ, &hKey);
    }
    else if (strcmp(Root, "HKEY_USERS") == 0){
        RegOpenKeyEx(HKEY_USERS, Path, 0, KEY_READ, &hKey);
    }
    else if (strcmp(Root, "HKEY_CURRENT_CONFIG") == 0){
        RegOpenKeyEx(HKEY_CURRENT_CONFIG, Path, 0, KEY_READ, &hKey);
    }
    else { cout << "Incorrect Root"; }
    showInVariablesInRegistry(hKey);
    return 0;
}
 
void showInVariablesInRegistry(HKEY hKey){
    string types[12] = { "REG_NONE", "REG_SZ", "REG_EXPAND_SZ", "REG_BINARY", "REG_DWORD", "REG_DWORD_BIG_ENDIAN", "REG_LINK",
        "REG_MULTI_SZ", "", "", "", "REG_QWORD" };
    DWORD lpcnumOfSubKeys = 0; // Amount of sub keys
    DWORD lpcmaxSubKeyLen = 0; //Size of sub key's
    DWORD lpcnumOfValues = 0; // A pointer to a variable that receives the number of values that are associated with the key
    DWORD lpcmaxValueNameLen = 0; // A pointer to a variable that receives the size of the key's longest value name, in Unicode characters.
    DWORD lpcmaxValueLen = 0; // f the longest data component among the key's values 
    RegQueryInfoKey(hKey, NULL, NULL, NULL, &lpcnumOfSubKeys, &lpcmaxSubKeyLen, NULL, &lpcnumOfValues, &lpcmaxValueNameLen, &lpcmaxValueLen, NULL, NULL); 
    char *valueName = new char[(int)lpcmaxValueNameLen];
    for (int i = 0; i < (int)lpcnumOfValues; i++){
        DWORD valueNameLen = lpcmaxValueNameLen + 1;
        char DataForSZ[MAX_PATH + 1] = "";
        DWORD Type, DataForDWORD;
        DWORD DataSize = MAX_PATH + 1;
        RegEnumValue(hKey, i, valueName, &valueNameLen, NULL, &Type, (BYTE*)&DataForSZ, &DataSize);
        if (types[Type] == "REG_SZ" || types[Type] == "REG_MULTI_SZ" || types[Type] == "REG_EXPAND_SZ"){            
            cout << endl << "VariableName:      " << valueName << " Type:   " << types[Type] << "   Value:  " << DataForSZ << endl << endl;
        }
        else if (types[Type] == "REG_DWORD"){
            //valueName - name; &valueNameLen - size of name; &Type - type of variable; 
            //data of variabel -(BYTE*)&DataForDWORD;  &DataSize - size of variable
            RegEnumValue(hKey, i, valueName, &valueNameLen, NULL, &Type, (BYTE*)&DataForDWORD, &DataSize);
            cout << endl << "Name:      " << valueName << " Type:   " << types[Type] << "   Value:  " << DataForDWORD << endl << endl;
        }
    }
    char *SKName = new char[(int)lpcmaxSubKeyLen];
    // check SubKey's
    for (int i = 0; i < (int)lpcnumOfSubKeys; i++){
        DWORD keyNameLen = lpcmaxSubKeyLen + 1;
        RegEnumKeyEx(hKey, i, SKName, &keyNameLen, NULL, NULL, NULL, NULL);       
        HKEY HSKey;
        RegOpenKeyEx(hKey, SKName, 0, KEY_READ, &HSKey);
        cout << "Sub Key Name: "<< SKName << endl;
        showInVariablesInRegistry(HSKey);
        system("pause");
    }
}