API Reference > Extension Classes > ExRender Classes > ExRender Windows Classes > OdTrXmlRendition Class > OdTrXmlRendition Methods > OdTrXmlRendition::onViewportBackgroundChanged Method
OdTrXmlRendition::onViewportBackgroundChanged Method
Syntax
C++
virtual void onViewportBackgroundChanged(OdTrVisViewportId viewportId, OdTrVisFlatMetafileContainerPtr pStream, OdTrVisProgramId baseProgramId = kTrVisNegativeId);

Called when background stream in viewport is changed.

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