Gets a value that indicates whether referenced resources that are not in the current document are required to correctly render a given element.
HRESULT value = object.get_externalResourcesRequired(ISVGAnimatedBoolean** externalResourcesRequired);
BOOL that specifies one of the following values.
- Scalable Vector Graphics: Basic Data Types and Interfaces, Section 4.5.27
If an external resource is not available, progressive rendering is suspended and the onload event does not occur. If a time-out event occurs with the Scalable Vector Graphics (SVG) document while loading a required resource, the document enters an error state that remains until all required resources are available.