kdbg/testprogs/qt.cpp

   1 #include <qmap.h>
   2 #include <qvaluelist.h>
   3 #include <qvaluevector.h>
   4 #include <qstring.h>
   5 #include <qrect.h>
   6 #include <iostream>
   7
   8 template<typename T>
   9 void test_sharing(const T& input)
  10 {
  11         // a copy should increase the share counter
  12         T copy = input;
  13
  14         // a const interator should not detach the copy
  15         typename T::const_iterator cit = copy.constBegin();
  16         std::cout << *cit << std::endl;
  17
  18         // a non-const iterator should detach the copy
  19         typename T::iterator it = copy.begin();
  20         std::cout << *it << std::endl;
  21 }
  22
  23 int main()
  24 {
  25         QMap<QString,int> str2int;
  26         str2int["foo"] = 42;
  27         test_sharing(str2int);
  28
  29         QValueList<int> ints;
  30         ints.push_back(42);
  31         test_sharing(ints);
  32
  33         QValueVector<double> vals(6, 47.11);
  34         vals.push_back(42);
  35         test_sharing(vals);
  36
  37         QRect r(10,20, 130, 240);
  38         QPoint p = r.topLeft();
  39         QPoint q = r.bottomRight();
  40         std::cout << r.width() << r.height() << p.x() << q.y() << std::endl;
  41 }