Interface IServiceProvider

public interface IServiceProvider extends IUnknown
{
  // Fields
  public static final _Guid iid;

  // Methods
  public void QueryService(_Guid guidService, _Guid riid,
        Object[] ppvObject);
}

This interface provides a method that locates a service specified by a GUID and returns the interface pointer for a requested interface on the service. An object that provides services could implement the IServiceProvider interface as a general way to supply its clients with pointers to the interfaces on the service.

Sometimes, the QueryService method returns an interface pointer from an object other than the site object. This happens when a service is provided through a separate control or through some other object that the client communicates with.

This interface wraps the Component Object Model (COM) IServiceProvider interface.

IUnknown
  |
  +--IServiceProvider

Methods

QueryService

public void QueryService(_Guid guidService, _Guid riid, Object[] ppvObject);

Retrieves the interface pointer for a requested interface on a service.

Return Value:

No return value.

Parameter	Description
guidService	The GUID for the service.
riid	The identifier of the requested interface.
ppvObject	The returned interface.

Fields

iid

The interface identifier.