挂机时锁定可以参考这个实例
资源文件列表
╧╡═│╣╥╗·╦°/SystemLock.sln , 920
╧╡═│╣╥╗·╦°/SystemLock.suo , 13312
╧╡═│╣╥╗·╦°/SystemLock/bin/Debug/SystemLock.exe , 245248
╧╡═│╣╥╗·╦°/SystemLock/bin/Debug/SystemLock.pdb , 46592
╧╡═│╣╥╗·╦°/SystemLock/bin/Debug/SystemLock.vshost.exe , 14328
╧╡═│╣╥╗·╦°/SystemLock/bin/Debug/SystemLock.vshost.exe.manifest , 490
╧╡═│╣╥╗·╦°/SystemLock/Form1.cs , 3088
╧╡═│╣╥╗·╦°/SystemLock/Form1.Designer.cs , 8891
╧╡═│╣╥╗·╦°/SystemLock/Form1.resx , 5814
╧╡═│╣╥╗·╦°/SystemLock/Form2.cs , 2654
╧╡═│╣╥╗·╦°/SystemLock/Form2.Designer.cs , 3549
╧╡═│╣╥╗·╦°/SystemLock/Form2.resx , 6008
╧╡═│╣╥╗·╦°/SystemLock/Form3.cs , 1450
╧╡═│╣╥╗·╦°/SystemLock/Form3.Designer.cs , 6274
╧╡═│╣╥╗·╦°/SystemLock/Form3.resx , 5814
╧╡═│╣╥╗·╦°/SystemLock/lock.ico , 3774
╧╡═│╣╥╗·╦°/SystemLock/myHook.cs , 2907
╧╡═│╣╥╗·╦°/SystemLock/obj/Debug/SystemLock.csproj.FileListAbsolute.txt , 3741
╧╡═│╣╥╗·╦°/SystemLock/obj/Debug/SystemLock.csproj.GenerateResource.Cache , 1028
╧╡═│╣╥╗·╦°/SystemLock/obj/Debug/SystemLock.exe , 245248
╧╡═│╣╥╗·╦°/SystemLock/obj/Debug/SystemLock.Form1.resources , 180
╧╡═│╣╥╗·╦°/SystemLock/obj/Debug/SystemLock.Form2.resources , 180
╧╡═│╣╥╗·╦°/SystemLock/obj/Debug/SystemLock.Form3.resources , 180
╧╡═│╣╥╗·╦°/SystemLock/obj/Debug/SystemLock.pdb , 46592
╧╡═│╣╥╗·╦°/SystemLock/obj/Debug/SystemLock.Properties.Resources.resources , 223367
╧╡═│╣╥╗·╦°/SystemLock/obj/Debug/TempPE/Properties.Resources.Designer.cs.dll , 5120
╧╡═│╣╥╗·╦°/SystemLock/Program.cs , 491
╧╡═│╣╥╗·╦°/SystemLock/Properties/AssemblyInfo.cs , 1383
╧╡═│╣╥╗·╦°/SystemLock/Properties/Resources.Designer.cs , 3356
╧╡═│╣╥╗·╦°/SystemLock/Properties/Resources.resx , 6431
╧╡═│╣╥╗·╦°/SystemLock/Properties/Settings.Designer.cs , 1095
╧╡═│╣╥╗·╦°/SystemLock/Properties/Settings.settings , 249
╧╡═│╣╥╗·╦°/SystemLock/screen.jpg , 221823
╧╡═│╣╥╗·╦°/SystemLock/SystemLock.csproj , 4719
╧╡═│╣╥╗·╦°/SystemLock/═╝▒Ω (93).ico , 2862