如何以编程方式获取服务的状态(正在运行/已停止)

Question

我需要在我的C++应用程序中获取Windows"print spooler"服务的状态.

Answer 1

@shikarssj提供的功能完美运行,加载服务时只需要管理员权限.

这是一个不要求完全权限的版本:

#include <Windows.h>

int GetServiceStatus( const char* name )
{
    SC_HANDLE theService, scm;
    SERVICE_STATUS m_SERVICE_STATUS;
    SERVICE_STATUS_PROCESS ssStatus;
    DWORD dwBytesNeeded;


    scm = OpenSCManager( nullptr, nullptr, SC_MANAGER_ENUMERATE_SERVICE );
    if( !scm ) {
        return 0;
    }

    theService = OpenService( scm, name, SERVICE_QUERY_STATUS );
    if( !theService ) {
        CloseServiceHandle( scm );
        return 0;
    }

    auto result = QueryServiceStatusEx( theService, SC_STATUS_PROCESS_INFO,
        reinterpret_cast<LPBYTE>( &ssStatus ), sizeof( SERVICE_STATUS_PROCESS ),
        &dwBytesNeeded );

    CloseServiceHandle( theService );
    CloseServiceHandle( scm );

    if( result == 0 ) {
        return 0;
    }

    return ssStatus.dwCurrentState;
}

Answer 2

我找不到任何使用WinApi和C++的好例子.我尝试并编译了以下内容,它适用于Borland.希望这有助于某人.

int getServiceStatus(char* name) 
{
   SC_HANDLE theService,scm;
   SERVICE_STATUS m_SERVICE_STATUS;
   SERVICE_STATUS_PROCESS ssStatus;
   DWORD dwBytesNeeded;

   scm = OpenSCManager(0, 0, SC_MANAGER_CREATE_SERVICE);
   if (!scm) {
     ShowErr();
     return 0;
   }


   theService = OpenService(scm, name, SERVICE_ALL_ACCESS);
   if (!theService) {
     CloseServiceHandle(scm);
     ShowErr();
     return 0;
   }

   int result = QueryServiceStatusEx(theService, SC_STATUS_PROCESS_INFO, (LPBYTE)       
                                   &ssStatus, sizeof(SERVICE_STATUS_PROCESS), 
                                   &dwBytesNeeded);

CloseServiceHandle(theService);
CloseServiceHandle(scm);

if (result == 0) return 0; // fail query status

return ssStatus.dwCurrentState;

}

Answer 3

使用QueryServiceStatus或QueryServiceStatusEx。网上有很多关于如何使用这些的例子。