#include "stdafx.h"
#include <windows.h>
#include <iostream>
using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
    HKEY m_key,m_key2;
    WCHAR m_name[200]={0},uninstall[200]={0};
    DWORD m_namelen=200;
    DWORD mIndex=0,mCount=0;
    WCHAR m_KeyName[200]={0};
    DWORD m_KeyNamelen=200;
    DWORD m_attr=REG_BINARY|REG_DWORD|REG_EXPAND_SZ|REG_MULTI_SZ|REG_NONE|REG_SZ;
    WCHAR m_SubKey[255]=L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall";
    //long erl=::RegOpenKeyEx(HKEY_CURRENT_USER,(LPCWSTR)m_SubKey,0,KEY_ALL_ACCESS,&m_key);
    /*if(RegOpenKeyEx(HKEY_CURRENT_USER,(LPCWSTR)"Software\\Zeal SoftStudio\\AskPro FTP\\LastTime",0, KEY_ALL_ACCESS, &m_key)==ERROR_SUCCESS)
    {

}*/

//DWORD m_Error=::GetLastError();
    //cout<<erl<<endl;
    //cout<<m_Error;

if(RegOpenKeyEx(HKEY_LOCAL_MACHINE,m_SubKey,0,KEY_ALL_ACCESS,&m_key)==ERROR_SUCCESS)
    {
        while(RegEnumKeyEx(m_key,mIndex,m_name,&m_namelen,0,NULL,NULL,0)!=ERROR_NO_MORE_ITEMS)
        {
            mIndex++;
            wcscpy(uninstall,m_SubKey);
            //strcpy(uninstall,m_SubKey); 
            //strcat(uninstall,"\\"); 
            wcscat(uninstall,L"\\");
            //strcat(uninstall,m_name);
            wcscat(uninstall,m_name);
            if(RegOpenKeyEx(HKEY_LOCAL_MACHINE,uninstall,0,KEY_ALL_ACCESS,&m_key2)==ERROR_SUCCESS)
            {
                RegQueryValueEx(m_key2,L"DisplayName",0,&m_attr,LPBYTE(m_KeyName),&m_KeyNamelen);
                wcout<<m_KeyName<<endl;
                mCount++;
            }
            RegCloseKey(m_key2);
            memset(m_KeyName,0,200);
        }
    }
    RegCloseKey(m_key);
    return 0;
}