C#代码屏蔽CTRL+ALT+DEL

最新推荐文章于 2024-01-28 21:33:28 发布

suijuebi4678

最新推荐文章于 2024-01-28 21:33:28 发布

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分类专栏： c# 文章标签： c# winlogon ctrl+alt+de

本文链接：https://blog.youkuaiyun.com/suijuebi4678/article/details/72354380

本文介绍了如何使用C#编程来挂起和恢复winlogon进程，以实现屏蔽CTRL+ALT+DEL组合键的效果。通过创建键盘钩子并利用WinIO库发送键盘扫描码来模拟按键行为，但这种方法存在一些问题，如winlogon画面仍会闪烁，且64位WinIO可能需要签名。作者建议采用更安全的方式，如WMI和应用程序通信，以达到类似目的。

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  非常折腾的方法，就是为了不写驱动！ 

  首先是挂起winlogon进程的类： 

  using System; 

  using System.Diagnostics; 

  using System.Runtime.InteropServices; 

  namespace WindowsFormsApplication1 

{

      class ProcessMgr 

{

          /// <summary> 

            /// The process-specific access rights. 

            /// </summary> 

          [Flags] 

          public enum ProcessAccess : uint 

{

              /// <summary> 

                 /// Required to terminate a process using TerminateProcess. 

                 /// </summary> 

              Terminate = 0x1, 

              /// <summary> 

                 /// Required to create a thread. 

                 /// </summary> 

              CreateThread = 0x2, 

              /// <summary> 

                 /// Undocumented. 

                 /// </summary> 

              SetSessionId = 0x4, 

              /// <summary> 

                 /// Required to perform an operation on the address space of a process (see VirtualProtectEx and WriteProcessMemory). 

                 /// </summary> 

              VmOperation = 0x8, 

              /// <summary> 

                 /// Required to read memory in a process using ReadProcessMemory. 

                 /// </summary> 

              VmRead = 0x10, 

              /// <summary> 

                 /// Required to write to memory in a process using WriteProcessMemory. 

                 /// </summary> 

              VmWrite = 0x20, 

              /// <summary> 

                 /// Required to duplicate a handle using DuplicateHandle. 

                 /// </summary> 

              DupHandle = 0x40, 

              /// <summary> 

                 /// Required to create a process. 

                 /// </summary> 

              CreateProcess = 0x80, 

              /// <summary> 

                 /// Required to set memory limits using SetProcessWorkingSetSize. 

                 /// </summary> 

              SetQuota = 0x100, 

              /// <summary> 

                 /// Required to set certain information about a process, such as its priority class (see SetPriorityClass). 

                 /// </summary> 

              SetInformation = 0x200, 

              /// <summary> 

                 /// Required to retrieve certain information about a process, such as its token, exit code, and priority class (see OpenProcessToken, GetExitCodeProcess, GetPriorityClass, and IsProcessInJob). 

                 /// </summary> 

              QueryInformation = 0x400, 

              /// <summary> 

                 /// Undocumented. 

                 /// </summary> 

              SetPort = 0x800, 

              /// <summary> 

                 /// Required to suspend or resume a process. 

                 /// </summary> 

              SuspendResume = 0x800, 

              /// <summary> 

                 /// Required to retrieve certain information about a process (see QueryFullProcessImageName). A handle that has the PROCESS_QUERY_INFORMATION access right is automatically granted PROCESS_QUERY_LIMITED_INFORMATION. 

                 /// </summary> 

              QueryLimitedInformation = 0x1000, 

              /// <summary> 

                 /// Required to wait for the process to terminate using the wait functions. 

                 /// </summary> 

              Synchronize = 0x100000 

}

&n

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