Opening an SCManager Database

Opening an SCManager Database

Many operations require an open handle to an SCManager object. The following example demonstrates how to obtain the handle.

Different operations on the SCM database require different levels of access, and you should only request the minimum access required. If SC_MANAGER_ALL_ACCESS is requested, the OpenSCManager function fails if the calling process does not have Administrator privileges. The following example shows how to request full access to the ServicesActive database on the local computer.

#include <windows.h>
#include <stdio.h>

SC_HANDLE schSCManager;

// Open a handle to the SC Manager database. 
 
schSCManager = OpenSCManager( 
    NULL,                    // local machine 
    NULL,                    // ServicesActive database 
    SC_MANAGER_ALL_ACCESS);  // full access rights 
 
if (NULL == schSCManager) 
    printf("OpenSCManager failed (%d)/n", GetLastError());