public static void OpenItem(ServiceProvider site, bool newFile, bool openWith, ref Guid logicalView, IntPtr punkDocDataExisting, IVsHierarchy pHierarchy, uint hierarchyId, out IVsWindowFrame windowFrame) { windowFrame = null; IntPtr docData = punkDocDataExisting; try { uint itemid = hierarchyId; object pvar; pHierarchy.GetProperty(hierarchyId, (int)__VSHPROPID.VSHPROPID_Caption, out pvar); string caption = (string)pvar; string fullPath = null; if (punkDocDataExisting != IntPtr.Zero) { try { // if interface is not supported, return null IPersistFileFormat pff = (IPersistFileFormat)Marshal.GetTypedObjectForIUnknown(punkDocDataExisting, typeof(IPersistFileFormat)); uint format; pff.GetCurFile(out fullPath, out format); } catch { }; } if (fullPath == null) { string dir; pHierarchy.GetProperty((uint)VsConstants.VSITEMID_ROOT, (int)__VSHPROPID.VSHPROPID_ProjectDir, out pvar); dir = (string)pvar; pHierarchy.GetProperty(hierarchyId, (int)__VSHPROPID.VSHPROPID_SaveName, out pvar); fullPath = dir != null?Path.Combine(dir, (string)pvar) : (string)pvar; } IVsUIHierarchy pRootHierarchy = null; pHierarchy.GetProperty((uint)VsConstants.VSITEMID_ROOT, (int)__VSHPROPID.VSHPROPID_Root, out pvar); IntPtr ptr; if (pvar == null) { pRootHierarchy = (IVsUIHierarchy)pHierarchy; } else { ptr = (IntPtr)pvar; pRootHierarchy = (IVsUIHierarchy)Marshal.GetTypedObjectForIUnknown(ptr, typeof(IVsUIHierarchy)); Marshal.Release(ptr); } IVsUIHierarchy pVsUIHierarchy = pRootHierarchy; IVsUIShellOpenDocument doc = (IVsUIShellOpenDocument)site.QueryService(VsConstants.SID_VsUIShellOpenDocument, typeof(IVsUIShellOpenDocument)); const uint OSE_ChooseBestStdEditor = 0x20000000; const uint OSE_UseOpenWithDialog = 0x10000000; const uint OSE_OpenAsNewFile = 0x40000000; if (openWith) { doc.OpenStandardEditor(OSE_UseOpenWithDialog, fullPath, ref logicalView, caption, pVsUIHierarchy, itemid, docData, site.Unwrap(), out windowFrame); } else { // First we see if someone else has opened the requested view of the file and if so, // simply activate that view. IVsRunningDocumentTable pRDT = (IVsRunningDocumentTable)site.QueryService(VsConstants.SID_SVsRunningDocumentTable, typeof(IVsRunningDocumentTable)); if (pRDT != null) { uint docCookie; IVsHierarchy ppIVsHierarchy; pRDT.FindAndLockDocument((uint)_VSRDTFLAGS.RDT_NoLock, fullPath, out ppIVsHierarchy, out itemid, out docData, out docCookie); if (ppIVsHierarchy != null && docCookie != VsConstants.VSDOCCOOKIE_NIL && pHierarchy != ppIVsHierarchy && pVsUIHierarchy != ppIVsHierarchy) { // not opened by us, so call IsDocumentOpen with the right IVsUIHierarchy so we avoid the // annoying "This document is opened by another project" message prompt. pVsUIHierarchy = (IVsUIHierarchy)ppIVsHierarchy; itemid = (uint)VsConstants.VSITEMID_SELECTION; } ppIVsHierarchy = null; } IVsUIHierarchy ppHierOpen; uint pitemidOpen; int pfOpen; doc.IsDocumentOpen(pVsUIHierarchy, itemid, fullPath, ref logicalView, (uint)__VSIDOFLAGS.IDO_ActivateIfOpen, out ppHierOpen, out pitemidOpen, out windowFrame, out pfOpen); if (pfOpen != 1) { uint openFlags = OSE_ChooseBestStdEditor; if (newFile) { openFlags |= OSE_OpenAsNewFile; } //NOTE: we MUST pass the IVsProject in pVsUIHierarchy and the itemid // of the node being opened, otherwise the debugger doesn't work. doc.OpenStandardEditor(openFlags, fullPath, ref logicalView, caption, pRootHierarchy, hierarchyId, docData, site.Unwrap(), out windowFrame); if (windowFrame != null) { if (newFile) { object var; windowFrame.GetProperty((int)__VSFPROPID.VSFPROPID_DocData, out var); IVsPersistDocData ppd = (IVsPersistDocData)var; ppd.SetUntitledDocPath(fullPath); } } } } if (windowFrame != null) { windowFrame.Show(); } } catch (COMException e) { if ((uint)e.ErrorCode != (uint)OleErrors.OLE_E_PROMPTSAVECANCELLED) { #if DEBUG MessageBox.Show(e.Message); #endif } } catch (Exception e) { #if DEBUG MessageBox.Show(e.Message); #endif } if (docData != punkDocDataExisting) { Marshal.Release(docData); } }