IXpsOMPageReference interface

Статья
06/01/2017

Enables virtualization of pages in an XPS document.

A page reference defers loading of the full object model of a page until the page is requested. If the page has not been altered, it can also be unloaded on request.

When to implement

Never. Custom implementation of this interface is not supported.

Members

The IXpsOMPageReference interface inherits from the IUnknown interface. IXpsOMPageReference also has these types of members:

Methods

Methods

The IXpsOMPageReference interface has these methods.

Method	Description
Clone	Makes a deep copy of the interface.
CollectLinkTargets	Gets an IXpsOMNameCollection interface that contains the names of all the document sub-tree objects whose IsHyperlinkTarget property is set to true.
CollectPartResources	Creates a list of all part-based resources that are associated with the page.
DiscardPage	Discards the page from memory.
GetAdvisoryPageDimensions	Gets the suggested dimensions of the page.
GetOwner	Gets a pointer to the IXpsOMDocument interface that contains the page reference.
GetPage	Gets a pointer to the IXpsOMPage interface that contains the page.
GetPrintTicketResource	Gets a pointer to the IXpsOMPrintTicketResource interface of the page-level print ticket resource that is associated with the page.
GetStoryFragmentsResource	Gets a pointer to the IXpsOMStoryFragmentsResource interface of the StoryFragments part resource that is associated with the page.
GetThumbnailResource	Gets a pointer to the IXpsOMImageResource interface of the thumbnail image resource that is associated with the page.
HasRestrictedFonts	Gets a Boolean value that indicates whether the document sub-tree of the referenced page includes any Glyphs that have a font resource whose EmbeddingOption property is set to XPS_FONT_EMBEDDING_RESTRICTED.
IsPageLoaded	Gets the referenced page status, which indicates whether the page is loaded.
SetAdvisoryPageDimensions	Sets the suggested dimensions of the page.
SetPage	Sets the IXpsOMPage interface of the page reference.
SetPrintTicketResource	Sets the IXpsOMPrintTicketResource interface pointer of the page-level print ticket resource that is to be assigned to the page.
SetStoryFragmentsResource	Sets the IXpsOMStoryFragmentsResource interface pointer of the StoryFragments resource to be assigned to the page.
SetThumbnailResource	Sets the pointer to the IXpsOMImageResource interface of the thumbnail image resource to be assigned to the page.

Remarks

The code example that follows illustrates how to create an instance of this interface.

IXpsOMPageReference    *newInterface;
// The following value is defined outside of 
// this example.
XPS_SIZE        advisoryPageDimensions;

// Note the implicit requirement that CoInitializeEx 
//  has previously been called from this thread.

hr = CoCreateInstance(
    __uuidof(XpsOMObjectFactory),
    NULL,
    CLSCTX_INPROC_SERVER,
    _uuidof(IXpsOMObjectFactory),
    reinterpret_cast<LPVOID*>(&xpsFactory)
    );

if (SUCCEEDED(hr))
{
    hr = xpsFactory->CreatePageReference (
        &advisoryPageDimensions,
        &newInterface);

    if (SUCCEEDED(hr))
    {
        // use newInterface

        newInterface->Release();
    }
    xpsFactory->Release();
}
else
{
    // evaluate HRESULT error returned in hr
}

For information about using this interface in a program, see Create a Blank XPS OM and Navigate the XPS OM.

Requirements

Minimum supported client	Windows 7, Windows Vista with SP2 and Platform Update for Windows Vista [desktop apps \| Windows Store apps]
Minimum supported server	Windows Server 2008 R2, Windows Server 2008 with SP2 and Platform Update for Windows Server 2008 [desktop apps \| Windows Store apps]
Header	Xpsobjectmodel.h
IDL	XpsObjectModel.idl

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