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IVsSolution.GetProjrefOfItem Method

Returns a project reference string for the specified hierarchy and hierarchy item pair.

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

int GetProjrefOfItem(
	IVsHierarchy pHierarchy,
	uint itemid,
	out string pbstrProjref


Type: Microsoft.VisualStudio.Shell.Interop.IVsHierarchy
[in] Pointer to the IVsHierarchy interface.
Type: System.UInt32
[in] Valid item identifier within the project; not a VSITEMID value.
Type: System.String
[out] Pointer to the project reference string.

Return Value

Type: System.Int32
If the method succeeds, it returns S_OK. If it fails, it returns an error code.

COM Signature

From vsshell.idl:

HRESULT IVsSolution::GetProjrefOfItem(
   [in] IVsHierarchy *pHierarchy,
   [in] VSITEMID itemid,
   [out] BSTR *pbstrProjref

The following is a description of how the GetProjrefOfItem method is used to support drag-and-drop operations:

The CF_VSPROJECTITEMS and CF_VSPROJECTS clipboard formats use the DROPFILES structure in the same manner as CF_HDROP or CF_PRINTERS. The data that follows the DROPFILES structure is a double-NULL-terminated list of Projref strings. The consumer of the drop operation can use the Windows API DragQueryFile to examine the data in the DROPFILES structure. CF_VSPROJECTS format is offered when the Projref strings identify projects as a whole, that is, *pitemid == VSITEMID_ROOT. The CF_VSPROJECTITEMS format is offered when the Projref strings identify one or more individual project items. Either CF_VSPROJECTS or CF_VSPROJECTITEMS should be offered, but never both.