Starting a Service - Win32 Programmer's Reference

Custom Search

Starting a Service

To start a service, the following example opens a handle to an installed database and then specifies the handle in a call to the StartService function. It can be used to start either a service or a driver service, but this example assumes that a service is being started. After starting the service, the program uses the members of the SERVICE_STATUS structure returned by the QueryServiceStatus function to track the progress of the service.

VOID StartSampleService()

{

SERVICE_STATUS ssStatus;

DWORD dwOldCheckPoint;

schService = OpenService(

schSCManager, // SCM database

TEXT("Sample_Srv"), // service name

SERVICE_ALL_ACCESS);

if (schService == NULL)

MyErrorExit("OpenService");

if (!StartService(

schService, // handle to service

0, // number of arguments

NULL) ) // no arguments

{

MyErrorExit("StartService");

}

else

printf("Service start pending\n");

// Check the status until the service is running.

if (!QueryServiceStatus(

schService, // handle to service

&ssStatus) ) // address of status information

MyErrorExit("QueryServiceStatus");

while (ssStatus.dwCurrentState != SERVICE_RUNNING)

{

// Save the current checkpoint.

dwOldCheckPoint = ssStatus.dwCheckPoint;

// Wait for the specified interval.

Sleep(ssStatus.dwWaitHint);

// Check the status again.

if (!QueryServiceStatus(

schService, // handle to service

&ssStatus) ) // address of status information

break;

// Break if the checkpoint has not been incremented.

if (dwOldCheckPoint >= ssStatus.dwCheckPoint)

break;

}

if (ssStatus.dwCurrentState == SERVICE_RUNNING)

printf("StartService SUCCESS\n");

else

{

printf("\nService not started: \n");

printf(" Current State: %d\n",

ssStatus.dwCurrentState);

printf(" Exit Code: %d\n", ssStatus.dwWin32ExitCode);

printf(" Service Specific Exit Code: %d\n",

ssStatus.dwServiceSpecificExitCode);

printf(" Check Point: %d\n", ssStatus.dwCheckPoint);

printf(" Wait Hint: %d\n", ssStatus.dwWaitHint);

}

CloseServiceHandle(schService);

}

Last news from Greatis Software

    Nostalgia .Net     .Net is powerful, but not all-powerful, so sometimes we need to use Win32 API for our .Net applications. It's simple enough with Platform Invoke if you have Win32 skill, but we do not always have time to dig the ancient documentation, declare the special types that are compatible with Win32, find the values of the Win32's constants and so on. Nostalgia .Net offers several simple-to-use classes, and components that will allow you to forget about the headache of Win32 and just use the power of Win32 in your application the same way as you use the native. Net classes. More »

Recommended software for developers

    Ultimate Pack     Component pack for Delphi and C++ Builder that contains runtime form designer, runtime object inspector, print suite and much more for the very special price. More »

    Form Designer .Net     Unique runtime form design solution that allows to edit any form in .Net WinForms application at runtime with full source codes for only 300 euro! More »

    Print Suite .Net     Print Suite .Net is a set of components for easy printing texts, images and grids from your WinForms applications. Full C# source codes are available More »

    Gradient Controls .Net     Gradient Controls .Net offers controls with gradient background feature. Labels, panels and so on... Full C# source codes are available More »

    Greatis iGrid     iGrid plots drawing grid right over your desktop, so you can use it everywhere, with any drawing application without any special plugins for different graphic editors. More »

All the contacts and projects

Dmitry Vasiliev (just.dmitry)

More Online Helps

Win32 Programmer's Reference
Win32 Multimedia Programmer's Reference
OLE Programmer's Reference
Microsoft Windows Pen API Programmer's Reference
Microsoft Windows Sockets 2 Reference
Microsoft Windows Telephony API (TAPI) Programmer's Reference
Unix Manual Pages

greatis just4fun network