IVsUIShell.GetCurrentBFNavigationItem Method

Returns the current backward and forward navigation item.

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

Syntax

'宣言
Function GetCurrentBFNavigationItem ( _
    <OutAttribute> ByRef ppWindowFrame As IVsWindowFrame, _
    <OutAttribute> ByRef pbstrData As String, _
    <OutAttribute> ByRef ppunk As Object _
) As Integer
'使用
Dim instance As IVsUIShell
Dim ppWindowFrame As IVsWindowFrame
Dim pbstrData As String
Dim ppunk As Object
Dim returnValue As Integer

returnValue = instance.GetCurrentBFNavigationItem(ppWindowFrame, _
    pbstrData, ppunk)

int GetCurrentBFNavigationItem(
    out IVsWindowFrame ppWindowFrame,
    out string pbstrData,
    out Object ppunk
)

int GetCurrentBFNavigationItem(
    [OutAttribute] IVsWindowFrame^% ppWindowFrame, 
    [OutAttribute] String^% pbstrData, 
    [OutAttribute] Object^% ppunk
)

function GetCurrentBFNavigationItem(
    ppWindowFrame : IVsWindowFrame, 
    pbstrData : String, 
    ppunk : Object
) : int

Parameters

ppWindowFrame
Type: Microsoft.VisualStudio.Shell.Interop.IVsWindowFrame%

[out] Pointer to the window frame for the window containing the backward and forward navigation item.

pbstrData
Type: System.String%

[out] Any arbitrary data that is needed for the navigation point (insertion point).

ppunk
Type: System.Object%

[out] Pointer to a specific interface for the navigation point. This is the interface passed in AddNewBFNavigationItem.

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 vsshell.idl:

HRESULT IVsUIShell::GetCurrentBFNavigationItem(
   [out] IVsWindowFrame **ppWindowFrame,
   [out] BSTR * pbstrData,
   [out] IUnknown **ppunk
);

If you want to provide backward and forward navigation points within your window, implement IVsBackForwardNavigation. The core text editor uses text markers to identify navigation points in 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.