IVsProject3.OpenItem(UInt32, Guid, IntPtr, IVsWindowFrame) IVsProject3.OpenItem(UInt32, Guid, IntPtr, IVsWindowFrame) IVsProject3.OpenItem(UInt32, Guid, IntPtr, IVsWindowFrame) IVsProject3.OpenItem(UInt32, Guid, IntPtr, IVsWindowFrame) Method


Opens an item in the project.

 int OpenItem(System::UInt32 itemid, Guid % rguidLogicalView, IntPtr punkDocDataExisting, [Runtime::InteropServices::Out] Microsoft::VisualStudio::Shell::Interop::IVsWindowFrame ^ % ppWindowFrame);
public int OpenItem (uint itemid, ref Guid rguidLogicalView, IntPtr punkDocDataExisting, out Microsoft.VisualStudio.Shell.Interop.IVsWindowFrame ppWindowFrame);
abstract member OpenItem : uint32 *  * nativeint *  -> int
Public Function OpenItem (itemid As UInteger, ByRef rguidLogicalView As Guid, punkDocDataExisting As IntPtr, ByRef ppWindowFrame As IVsWindowFrame) As Integer
UInt32 UInt32 UInt32 UInt32

[in] Identifier of the item to open. Should be VSITEMID_ROOT or other valid item identifier. See the VSITEMID enumeration.

Guid Guid Guid Guid

[in] Unique identifier of the logical view. If not GUID_NULL, indicates a specific type of view to create. For more information, see the LOGVIEWID.

IntPtr IntPtr IntPtr IntPtr

[in] Pointer to the document data object of the item to open. If the caller of OpenItem had a pointer to the document data object, it would pass it in the punkDocDataExisting parameter. If the caller knew that the document data object was not open, it would pass null. If the caller did not know if the document data object was open or if it did not want to look it up in the running document table (RDT) to find out, then it could pass in DOCDATAEXISTING_UNKNOWN If this value is passed, then OpenStandardEditor(UInt32, String, Guid, String, IVsUIHierarchy, UInt32, IntPtr, IServiceProvider, IVsWindowFrame) will look up the value in the RDT by calling FindAndLockDocument(UInt32, String, IVsHierarchy, UInt32, IntPtr, UInt32) (RDT_EditLock) to determine whether the file (document data object) is already open.

IVsWindowFrame IVsWindowFrame IVsWindowFrame IVsWindowFrame

[out] Pointer to the IVsWindowFrame interface.


If the method succeeds, it returns S_OK. If it fails, it returns an error code.



COM Signature

From vsshell.idl:

HRESULT IVsProject3::OpenItem(  
   [in] VSITEMID itemid,  
   [in] REFGUID rguidLogicalView,  
   [in] IUnknown *punkDocDataExisting,  
   [out] IVsWindowFrame **ppWindowFrame  

By implementing IVsProjectSpecificEditorMap2 Interface on your project object, you can do project-specific handling of files. That is, you can support either opening the file in a project-specific editor or allowing the global editor to open the item. Opening an item requires launching an editor using OpenStandardEditor or OpenSpecificEditor, depending on the handling you want to implement. For more information, see GetSpecificEditorProperty.


In your implementation of OpenItem, do not call Show on the window frame you return in ppWindowFrame.

Compare to ReopenItem method.

Applies to