In the above examples we provided our own LessThan-function, so we were using this qsort definition:

Qt Code: 
  1. template <typename RandomAccessIterator, typename LessThan>
  2. inline void qSort(RandomAccessIterator start, RandomAccessIterator end, LessThan lessThan)
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The third argument is a function pointer to a user-defined-function with two parameters of the container type, that returns true only if the first argument is "less" than the second.

Qt Code: 
  1. bool compareNames(const T &t1, const T &t2) const ..
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So you do not give any parameters to compareNames. You just call:

Qt Code: 
  1. qSort(strlist.begin(),strlist.end(),compareNames);
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qSort then calls compareNames each time it needs to establish the order of two strings while sorting the whole thing.

HIH

Johannes