Mega Code Archive
How to check if a service is running
<![CDATA[
Title: How to check if a service is running
uses
WinSvc;
function ServiceGetStatus(sMachine, sService: PChar): DWORD;
{******************************************}
{*** Parameters: ***}
{*** sService: specifies the name of the service to open
{*** sMachine: specifies the name of the target computer
{*** ***}
{*** Return Values: ***}
{*** -1 = Error opening service ***}
{*** 1 = SERVICE_STOPPED ***}
{*** 2 = SERVICE_START_PENDING ***}
{*** 3 = SERVICE_STOP_PENDING ***}
{*** 4 = SERVICE_RUNNING ***}
{*** 5 = SERVICE_CONTINUE_PENDING ***}
{*** 6 = SERVICE_PAUSE_PENDING ***}
{*** 7 = SERVICE_PAUSED ***}
{******************************************}
var
SCManHandle, SvcHandle: SC_Handle;
SS: TServiceStatus;
dwStat: DWORD;
begin
dwStat := 0;
// Open service manager handle.
SCManHandle := OpenSCManager(sMachine, nil, SC_MANAGER_CONNECT);
if (SCManHandle 0) then
begin
SvcHandle := OpenService(SCManHandle, sService, SERVICE_QUERY_STATUS);
// if Service installed
if (SvcHandle 0) then
begin
// SS structure holds the service status (TServiceStatus);
if (QueryServiceStatus(SvcHandle, SS)) then
dwStat := ss.dwCurrentState;
CloseServiceHandle(SvcHandle);
end;
CloseServiceHandle(SCManHandle);
end;
Result := dwStat;
end;
function ServiceRunning(sMachine, sService: PChar): Boolean;
begin
Result := SERVICE_RUNNING = ServiceGetStatus(sMachine, sService);
end;
// Check if Eventlog Service is running
procedure TForm1.Button1Click(Sender: TObject);
begin
if ServiceRunning(nil, 'Eventlog') then
ShowMessage('Eventlog Service Running')
else
ShowMessage('Eventlog Service not Running')
end;
Windows 2000 and earlier: All processes are granted the SC_MANAGER_CONNECT,
SC_MANAGER_ENUMERATE_SERVICE, and SC_MANAGER_QUERY_LOCK_STATUS access rights.
Windows XP: Only authenticated users are granted the SC_MANAGER_CONNECT,
SC_MANAGER_ENUMERATE_SERVICE,
and SC_MANAGER_QUERY_LOCK_STATUS access rights.
Do not use the service display name (as displayed in the services
control panel applet.) You must use the real service name, as
referenced in the registry under
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services
]]>