IXpsOMObjectFactory::CreateCanvas method (xpsobjectmodel.h)

Creates an IXpsOMCanvas interface that is used to group page elements.

Syntax

HRESULT CreateCanvas(
  [out, retval] IXpsOMCanvas **canvas
);

Parameters

[out, retval] canvas

A pointer to the new IXpsOMCanvas interface.

Return value

The method returns an HRESULT. Possible values include, but are not limited to, those in the table that follows. For information about XPS document API return values that are not listed in this table, see XPS Document Errors.

Remarks

The code example that follows illustrates how this method is used to create a new interface.

IXpsOMCanvas    *newInterface;

// 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->CreateCanvas (&newInterface);
    if (SUCCEEDED(hr))
    {
        // use newInterface

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

Requirements

See also

IXpsOMCanvas

IXpsOMObjectFactory

XML Paper Specification

XPS Document Errors