IProfferService.ProfferService Method
Allows the caller to proffer a new service to the set of services presently proffered by the environment, either natively or by other installed VSPackages.
Namespace: Microsoft.VisualStudio.Shell.Interop
Assembly: Microsoft.VisualStudio.Shell.Interop (in Microsoft.VisualStudio.Shell.Interop.dll)
Syntax
'宣言
Function ProfferService ( _
ByRef rguidService As Guid, _
psp As IServiceProvider, _
<OutAttribute> ByRef pdwCookie As UInteger _
) As Integer
'使用
Dim instance As IProfferService
Dim rguidService As Guid
Dim psp As IServiceProvider
Dim pdwCookie As UInteger
Dim returnValue As Integer
returnValue = instance.ProfferService(rguidService, _
psp, pdwCookie)
int ProfferService(
ref Guid rguidService,
IServiceProvider psp,
out uint pdwCookie
)
int ProfferService(
[InAttribute] Guid% rguidService,
[InAttribute] IServiceProvider^ psp,
[OutAttribute] unsigned int% pdwCookie
)
function ProfferService(
rguidService : Guid,
psp : IServiceProvider,
pdwCookie : uint
) : int
Parameters
rguidService
Type: System.Guid%[in] A GUID that identifies the service being proffered.
psp
Type: Microsoft.VisualStudio.OLE.Interop.IServiceProvider[in] Pointer to the IServiceProvider interface that provides the environment with the means to request the service.
pdwCookie
Type: System.UInt32%[out, retval] Cookie that identifies the service so that the caller can later revoke the service.
Return Value
Type: System.Int32
If the method succeeds, it returns S_OK. If it fails, it returns an error code.
Remarks
COM Signature
From proffserv.idl:
HRESULT IProfferService::ProfferService(
[in] REFGUID rguidService,
[in] IServiceProvider* psp,
[out] DWORD* pdwCookie
);
Normally used in conjunction with a call to SetSite.
A VSPackage cannot replace the implementation of a service that is already provided by the environment or another loaded VSPackage. Therefore, if a service is already provided at the time an attempt to proffer the same service is made, the IProfferService::ProfferService method will fail and return S_FALSE.
VSPackages proffer their services, and, during normal conditions, they do not revoke their services. These services are revoked as part of the shutdown sequence of the environment.
Permissions
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.