Assembly: Microsoft.VisualStudio.Shell (in microsoft.visualstudio.shell.dll)
|SEID_DocumentFrame||Visual Studio tracks this selection automatically so it cannot be set via OnElementValueChanged, but the value may be observed by calling|
|SEID_LastWindowFrame||The value of SEID_WindowFrame before it received its current value. It is guaranteed to be different from SEID_WindowFrame unless both are empty.|
|SEID_PropertyBrowserSID||of the active .|
|SEID_ResultList||IID_IUnknown of the activefor list navigation commands.|
|SEID_StartupProject||IID_IUnknown of the active StartupProject.|
|SEID_UndoManager||IID_IUnknown of the activeobject.|
|SEID_UserContext||An event that indicates selection only by document windows that do not push selection context to the property browser. The alternative case is VSFPROPID_UserContext.|
|SEID_WindowFrame||Visual Studio tracks this selection automatically so it cannot be set via OnElementValueChanged, but the value may be observed by calling GetCurrentElementValue|
If your code only needs to know when a window is activated, first implement the IVsSelectionEvents interface then query the shell for the selection monitoring service. This means: elementid == or elementid == . Test the varValueNew parameter for a pointer to the window frame you are looking for. The following describes the significance of the OnElementValueChanged values:the shell for the service SID_SVsShellMonitorSelection and its interface IID_IVsMonitorSelection, retrieving . Next on that interface IVsMonitorSelection call and send it a pointer to the IVsSelectionEvents handler that you implemented above. In your handler for the OnElementValueChanged call, look for
Fires for both tool window and document window activation.
Fires only for document window activation.
To get more selection information implement theinterface. In previous versions of Visual Studio only the object set as the object was available. Visual Studio contains the new interface which allows multiple parties to subscribe to these events.
These element IDs are the only element IDs that can be used with the selection service. Do not attempt to pass any other element IDs.
should be used only by document windows that do not push selection context to the property browser see for the alternative case.
You can also use this mechanism to detect when you lose selection