www.pudn.com > shijiantongbu.zip > SvcUninstall.pas

unit SvcUninstall; 
 
interface 
 
procedure Uninstall; 
 
implementation 
 
uses Dialogs, Windows, WinSvc, SysUtils, Registry, IsWinNt, NetTimeCommon, 
  WinsockUtil, mutex, NetTimeIPC; 
 
procedure Uninstall; 
 
var 
  reg: TRegistry; 
  sch: THandle; 
  svh: THandle; 
  InstDir: string; 
  ni: TNetTimeIPC; 
 
begin 
  InstDir := ParamStr(1); 
  if InstDir[length(InstDir)] <> '\' then 
    InstDir := InstDir + '\'; 
  if IsWindowsNT then 
    begin 
      sch := OpenSCManager(nil,nil,SC_MANAGER_CONNECT); 
      if sch <> 0 then 
        begin 
          svh := OpenService(sch,'NetTimeSvc',SERVICE_ALL_ACCESS); 
          if sch <> 0 then 
            DeleteService(svh); 
        end; 
    end; 
  reg := TRegistry.Create; 
  try 
    reg.LazyWrite := false; 
    reg.RootKey := HKEY_LOCAL_MACHINE; 
    if not reg.OpenKey('Software\Microsoft\Windows\CurrentVersion\RunServices',true) then 
      raise exception.create('Could not uninstall: RunServices key does not exist'); 
    reg.DeleteValue('NetTime Service'); 
    reg.CloseKey; 
    if not reg.OpenKey('Software\Microsoft\Windows\CurrentVersion\Run',true) then 
      raise exception.create('Could not uninstall: Run key does not exist'); 
    reg.DeleteValue('NetTime'); 
    reg.CloseKey; 
  finally 
    reg.Free; 
  end; 
  ni := TNetTimeIPC.Create(nil); 
  ni.InitResources; 
  ni.KillEverything; 
  ni.Free; 
  Sleep(PollSleepTime); 
  if GetExclusivity(ExNameUI) then 
    ReleaseExclusivity(ExNameUI) 
  else 
     ShowMessage('An instance of the NetTime user interface is still running. '+ 
      'Please shut it down and then click OK.'); 
  if GetExclusivity(ExNameServer) then 
    ReleaseExclusivity(ExNameServer) 
  else 
    ShowMessage('An instance of the NetTime server is still running. '+ 
      'Please shut it down and then click OK.'); 
end; 
 
end.