You'll need this as well.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@3519 a592a061-630c-0410-9148-cb99ea01b6c8

src/insets/insetgraphics.h

@@ -30,6 +30,7 @@
 #include "sigc++/signal_system.h"
 
 class Dialogs;
+class LyXImage;
 
 ///
 class InsetGraphics : public Inset, public SigC::Object {
@@ -112,6 +113,10 @@ private:
 	string const createLatexOptions() const;
 	/// Convert the file if needed, and return the location of the file.
 	string const prepareFile(Buffer const * buf) const;
+	/// The graphics cache handle.
+	mutable boost::shared_ptr<GraphicsCacheItem> cacheHandle;
+	/// is the pixmap initialized?
+	mutable bool imageLoaded;
 	///
 	InsetGraphicsParams params;
 };