IVsUserContext.GetSubcontext Method

项目
04/26/2010

Returns a specified subcontext bag from the parent context bag.

Namespace: Microsoft.VisualStudio.Shell.Interop
Assembly: Microsoft.VisualStudio.Shell.Interop (in Microsoft.VisualStudio.Shell.Interop.dll)

Syntax

声明
Function GetSubcontext ( _
    i As Integer, _
    <OutAttribute> ByRef ppSubCtx As IVsUserContext _
) As Integer
用法
Dim instance As IVsUserContext
Dim i As Integer
Dim ppSubCtx As IVsUserContext
Dim returnValue As Integer

returnValue = instance.GetSubcontext(i, _
    ppSubCtx)

int GetSubcontext(
    int i,
    out IVsUserContext ppSubCtx
)

int GetSubcontext(
    [InAttribute] int i, 
    [OutAttribute] IVsUserContext^% ppSubCtx
)

abstract GetSubcontext : 
        i:int * 
        ppSubCtx:IVsUserContext byref -> int

function GetSubcontext(
    i : int, 
    ppSubCtx : IVsUserContext
) : int

Parameters

i
Type: System.Int32
[in] Index position of the subcontext bag on the parent context bag. This index is zero based.

ppSubCtx
Type: Microsoft.VisualStudio.Shell.Interop.IVsUserContext%
[out, retval] Pointer to the IVsUserContext interface, representing the subcontext bag.

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 context.idl:

HRESULT IVsUserContext::GetSubcontext(
   [in] int i,
   [out, retval] IVsUserContext ** ppSubCtx
);

To add subcontext for a selection in a context provider, like a command in a tool window or a keyword in a language service, you need to create a subcontext bag. A subcontext bag is simply a context bag that the parent context bag points to and which holds context for the selection. By having the parent context bag point to the subcontext bag, the subcontext is also made available to the Dynamic Help window.

Use the IVsUserContext.GetSubcontext method in conjunction with CountSubcontexts to iterate through the subcontext bags for the context provider.

.NET Framework Security

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.

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