C++通过访问注册表获取已安装软件信息列表

// ------------------------------------------------------------------------------------------------------------------------
// FlieNmae:
//   SofInfo.h
// Remark:
//   通过读取注册表获得本机已安装软件信息。
// ------------------------------------------------------------------------------------------------------------------------
#pragma once
#include <vector>

struct SoftInfo
{
// 软件名
CString m_strSoftName;
// 软件版本号
CString m_strSoftVersion;
// 软件安装目录
CString m_strInstallLocation;
// 软件发布厂商
CString m_strPublisher;
// 主程序所在完整路径
CString m_strMainProPath;
// 卸载exe所在完整路径
CString m_strUninstallPth;
};

class CSoftInfo
{
private:
// 保存已安装常用软件安装信息
std::vector<SoftInfo> m_SoftInfoArr;
// 保存系统补丁信息
std::vector<SoftInfo> m_SystemPatchesArr;

public:
CSoftInfo();
~CSoftInfo(){}

// 获取一个包含常用软件安装信息的Vector
std::vector<SoftInfo> GetSoftInfo (void) const;
// 获取所有已安装常用软件名
void GetSoftName (std::vector<LPCTSTR>& lpszSoftName);
// 获取所有已安装常用软件版本号
void GetSoftVersion (std::vector<LPCTSTR>& lpszSoftVersion);
// 获取所有已安装常用软件安装目录
void GetInstallLocation (std::vector<LPCTSTR>& lpszInstallLocation);
// 获取所有已安装常用软件发布厂商
void GetPublisher (std::vector<LPCTSTR>& lpszPublisher);
// 获取所有已安装常用软件主程序所在路径
void GetMainProPath (std::vector<LPCTSTR>& lpszMainProPath);
// 获取所有已安装常用软件卸载程序所在路径
void GetUninstallPth (std::vector<LPCTSTR>& lpszSoftName);

// 获取一个包含系统补丁信息的Vector
std::vector<SoftInfo> GetSystemPatchesInfo (void) const;
// 获取所有已安装系统补丁名
void GetSystemPatchesName (std::vector<LPCTSTR>& lpszSoftName);
};

// FlieNmae: Softinfo.cpp

#include "stdafx.h"
#include "SoftInfo.h"

CSoftInfo::CSoftInfo()
{
struct SoftInfo softinfo;
HKEY RootKey;            // 主键
LPCTSTR lpSubKey;        // 子键名称
HKEY hkResult;            // 将要打开键的句柄
HKEY hkRKey;
LONG lReturn;            // 记录读取注册表是否成功
CString strBuffer;
CString strMidReg;

DWORD index = 0;
TCHAR szKeyName[255] = {0};        // 注册表项名称
TCHAR szBuffer[255] = {0};
DWORD dwKeyLen = 255;
DWORD dwNameLen = 255;
DWORD dwType = REG_BINARY|REG_DWORD|REG_EXPAND_SZ|REG_MULTI_SZ|REG_NONE|REG_SZ;
RootKey = HKEY_LOCAL_MACHINE;
lpSubKey = _T("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall");

lReturn = RegOpenKeyEx(RootKey, lpSubKey, 0, KEY_ALL_ACCESS, &hkResult);

if (lReturn == ERROR_SUCCESS)
{

while (ERROR_NO_MORE_ITEMS !=RegEnumKeyEx(hkResult, index, szKeyName, &dwKeyLen, 0, NULL, NULL, NULL))
{
index++;
strBuffer.Format(_T("%s"), szKeyName);
if (!strBuffer.IsEmpty())
{
strMidReg = (CString)lpSubKey +_T("\\") + strBuffer;

if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, strMidReg, 0, KEY_ALL_ACCESS, &hkRKey)==ERROR_SUCCESS)
{
RegQueryValueEx(hkRKey, _T("DisplayName"), 0, &dwType, (LPBYTE)szBuffer,&dwNameLen);
softinfo.m_strSoftName = szBuffer;
dwNameLen = 255;
memset(szBuffer, 0, 255);

RegQueryValueEx(hkRKey, _T("DisplayVersion"), 0, &dwType, (LPBYTE)szBuffer,&dwNameLen);
softinfo.m_strSoftVersion = szBuffer;
dwNameLen = 255;
memset(szBuffer, 0, 255);

RegQueryValueEx(hkRKey, _T("InstallLocation"), 0, &dwType, (LPBYTE)szBuffer,&dwNameLen);
softinfo.m_strInstallLocation = szBuffer;
dwNameLen = 255;
memset(szBuffer, 0, 255);

RegQueryValueEx(hkRKey, _T("Publisher"), 0, &dwType, (LPBYTE)szBuffer,&dwNameLen);
softinfo.m_strPublisher = szBuffer;
dwNameLen = 255;

RegQueryValueEx(hkRKey, _T("InstallLocation"), 0, &dwType, (LPBYTE)szBuffer,&dwNameLen);
softinfo.m_strMainProPath = szBuffer;
dwNameLen = 255;
memset(szBuffer, 0, 255);

RegQueryValueEx(hkRKey, _T("UninstallString"), 0, &dwType, (LPBYTE)szBuffer,&dwNameLen);
softinfo.m_strUninstallPth = szBuffer;
dwNameLen = 255;
memset(szBuffer, 0, 255);

if(!softinfo.m_strSoftName.IsEmpty())
{
if(strBuffer.GetAt(0) == 'K' && strBuffer.GetAt(1) == 'B')
{
m_SystemPatchesArr.push_back(softinfo);
}
else
{
m_SoftInfoArr.push_back(softinfo);
}
}
}

dwKeyLen = 255;
memset(szKeyName,0, 255);
}
}
RegCloseKey(hkResult);
}
else
{
::MessageBox(NULL, _T("打开注册表失败!"), NULL, MB_ICONWARNING);
}
}

std::vector<SoftInfo> CSoftInfo::GetSoftInfo (void) const
{
return m_SoftInfoArr;
}

void CSoftInfo::GetSoftName (std::vector<LPCTSTR>& lpszSoftName)
{
std::vector<SoftInfo>::iterator iter;
for (iter = m_SoftInfoArr.begin(); iter != m_SoftInfoArr.end(); iter++)
{
lpszSoftName.push_back(iter->m_strSoftName);
}
}

void CSoftInfo::GetSoftVersion (std::vector<LPCTSTR>& lpszSoftVersion)
{
std::vector<SoftInfo>::iterator iter;
for (iter = m_SoftInfoArr.begin(); iter != m_SoftInfoArr.end(); iter++)
{
if (!(iter->m_strSoftVersion).IsEmpty())
{
lpszSoftVersion.push_back(iter->m_strSoftVersion);
}
}
}

void CSoftInfo::GetInstallLocation (std::vector<LPCTSTR>& lpszInstallLocation)
{
std::vector<SoftInfo>::iterator iter;
for (iter = m_SoftInfoArr.begin(); iter != m_SoftInfoArr.end(); iter++)
{
if (!(iter->m_strInstallLocation).IsEmpty())
{
lpszInstallLocation.push_back(iter->m_strInstallLocation);
}
}
}

void CSoftInfo::GetPublisher (std::vector<LPCTSTR>& lpszPublisher)
{
std::vector<SoftInfo>::iterator iter;

bool bSign;
for (iter = m_SoftInfoArr.begin(); iter != m_SoftInfoArr.end(); iter++)
{
bSign = true;

// 初步去重复厂商
std::vector<LPCTSTR>::iterator itr;
for (itr = lpszPublisher.begin(); itr != lpszPublisher.end(); itr++)
{
if (iter->m_strPublisher == (CString)*itr)
{
bSign = false;
}
}

if (bSign)
{
lpszPublisher.push_back(iter->m_strPublisher);
}
}
}

void CSoftInfo::GetMainProPath (std::vector<LPCTSTR>& lpszMainProPath)
{
std::vector<SoftInfo>::iterator iter;
for (iter = m_SoftInfoArr.begin(); iter != m_SoftInfoArr.end(); iter++)
{
if (!(iter->m_strMainProPath).IsEmpty())
{
lpszMainProPath.push_back(iter->m_strMainProPath);
}
}
}

void CSoftInfo::GetUninstallPth (std::vector<LPCTSTR>& lpszSoftName)
{
std::vector<SoftInfo>::iterator iter;
for (iter = m_SoftInfoArr.begin(); iter != m_SoftInfoArr.end(); iter++)
{
if (!(iter->m_strUninstallPth).IsEmpty())
{
lpszSoftName.push_back(iter->m_strUninstallPth);
}
}
}

std::vector<SoftInfo> CSoftInfo::GetSystemPatchesInfo (void) const
{
return m_SystemPatchesArr;
}

void CSoftInfo::GetSystemPatchesName (std::vector<LPCTSTR>& lpszSoftName)
{
std::vector<SoftInfo>::iterator iter;
for (iter = m_SystemPatchesArr.begin(); iter != m_SystemPatchesArr.end(); iter++)
{
lpszSoftName.push_back(iter->m_strSoftName);
}
}