windows API程序的懸掛和恢復(https://stackoverflow.com/questions/71257/suspend-process-in-c-sharp)
阿新 • • 發佈:2020-10-21
public static 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 } [DllImport("ntdll.dll")] private static extern uint NtResumeProcess([In] IntPtr processHandle); [DllImport("ntdll.dll")] private static extern uint NtSuspendProcess([In] IntPtr processHandle); [DllImport("kernel32.dll", SetLastError = true)] private static extern IntPtr OpenProcess( ProcessAccess desiredAccess, bool inheritHandle, int processId); [DllImport("kernel32.dll", SetLastError = true)] [return: MarshalAs(UnmanagedType.Bool)] private static extern bool CloseHandle([In] IntPtr handle); public static void SuspendProcess(int processId) { IntPtr hProc = IntPtr.Zero; try { // Gets the handle to the Process hProc = OpenProcess(ProcessAccess.SuspendResume, false, processId); if (hProc != IntPtr.Zero) NtSuspendProcess(hProc); } finally { // Don't forget to close handle you created. if (hProc != IntPtr.Zero) CloseHandle(hProc); } } public static void ResumeProcess(int processId) { IntPtr hProc = IntPtr.Zero; try { // Gets the handle to the Process hProc = OpenProcess(ProcessAccess.SuspendResume, false, processId); if (hProc != IntPtr.Zero) NtResumeProcess(hProc); } finally { // Don't forget to close handle you created. if (hProc != IntPtr.Zero) CloseHandle(hProc); } } }