How to catch exceptions in Qt?

Question

try
{  // `count()` throws exception
  connect(thread, SIGNAL(started()), engine, SLOT(count()));  
}
catch(const X& e)
{}

As of Qt-5, I get follow

Answer 1

If someone needs an example code to override QApplication::notify, I got one from here (in Japanese): http://www.02.246.ne.jp/~torutk/cxx/qt/QtMemo.html

#include "MyApplication.h"
#include 

MyApplication::MyApplication(int& argc, char** argv) :
  QApplication(argc, argv) {}

bool MyApplication::notify(QObject* receiver, QEvent* event) {
  bool done = true;
  try {
    done = QApplication::notify(receiver, event);
  } catch (const std::exception& ex) {
    // ログや何らかの回復処理
  } catch (...) {
    // ログや何らかの回復処理
  }
  return done;
}