29#include "bufferreader.h" 
   34#include <ContextProvider> 
   43    CompassBin(ContextProvider::Service& service, 
bool pluginValid = 
true);
 
   51    Property headingProperty;
 
   53    AbstractChain* compassChain;
 
CompassBin(ContextProvider::Service &service, bool pluginValid=true)
Datatypes for different filters.