用MFC获取电脑安装软件信息并把它展示在列表控件

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已于 2023-08-07 22:55:25 修改

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文章标签： mfc c++

于 2023-08-07 22:53:04 首次发布

本文链接：https://blog.youkuaiyun.com/weixin_50698559/article/details/132156951

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文章描述了一个C++函数CGetInfoDlg中的GetAppInfo方法，用于从Windows系统注册表中获取应用程序的名称、版本、出版者和安装位置。它通过遍历HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionUninstall子键来获取这些信息。

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void CGetInfoDlg::GetAppInfo()
{
   // TODO: 在此处添加实现代码.
   HKEY hKey;
   LONG result = RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall"), 0, KEY_READ, &hKey);
   if (result == ERROR_SUCCESS)
   {
       TCHAR subKeyName[MAX_PATH+1];
       DWORD subKeyIndex = 0;
       DWORD subKeyNameSize = sizeof(subKeyName);
       while (RegEnumKeyEx(hKey, subKeyIndex, subKeyName, &subKeyNameSize, NULL, NULL, NULL, NULL) == ERROR_SUCCESS)
       {
           HKEY subKey;
           result = RegOpenKeyEx(hKey, subKeyName, 0, KEY_READ, &subKey);
           if (result == ERROR_SUCCESS)
           {
               CString displayName;
               CString displayVersion;
               CString publisher;
               CString installLocation;

               result = GetValueFromRegistry(subKey, _T("DisplayName"), displayName);
               if (result == ERROR_SUCCESS&&!displayName.IsEmpty())
               {
                   GetValueFromRegistry(subKey, _T("DisplayVersion"), displayVersion);
                   GetValueFromRegistry(subKey, _T("Publisher"), publisher);
                   GetValueFromRegistry(subKey, _T("InstallLocation"), installLocation);

                   int index = m_appList.InsertItem(m_appList.GetItemCount(), displayName);
                   m_appList.SetItemText(index, 1, displayVersion);
                   m_appList.SetItemText(index, 2, publisher);
                   m_appList.SetItemText(index, 3, installLocation);
               }
               RegCloseKey(subKey);

           }
           subKeyIndex++;
           subKeyNameSize = sizeof(subKeyName);

       }
       RegCloseKey(hKey);
   }
}

LONG CGetInfoDlg::GetValueFromRegistry(HKEY hKey, LPCTSTR valueName, CString& value)
{
// TODO: 在此处添加实现代码.

DWORD valueSize=0;
DWORD valueType;

   LONG result = RegQueryValueEx(hKey, valueName, NULL, &valueType, NULL, &valueSize);
   if (result == ERROR_SUCCESS && valueType == REG_SZ && valueSize > 0)
   {
       TCHAR* valueBuffer = new TCHAR[valueSize / sizeof(TCHAR)];
       result = RegQueryValueEx(hKey, valueName, NULL, &valueType, reinterpret_cast<LPBYTE>(valueBuffer), &valueSize);
       if (result == ERROR_SUCCESS)
       {
           value = valueBuffer;
       }
       delete[] valueBuffer;
   }
   return result;
}