Hi All,

I am attempting to set up a signal/slot arrangement for a button.

I read a recommendation somewhere that a way to debug the signal part of a connection statement was to do something like:

Qt Code: 
  1. connect(myObj, SIGNAL(mySignal()), qApp, SLOT(aboutQt()));
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I thought I knew a good idea when I saw one. Anyway, I encounter a problem with this trifling task.


Qt Code: 
  1. class ButtonDelegate : public QStyledItemDelegate
  2. {
  3.     Q_OBJECT
  4. public:
  5.        explicit ButtonDelegate(QObject *parent=0);
  6.        ~ButtonDelegate();
  7.  
  8.   // code redacted for bevity
  9.  
  10. private:
  11.    QPushButton *button;
  12.  
  13. };
  14.  
  15. ButtonDelegate::ButtonDelegate(QObject *parent) : QStyledItemDelegate(parent)
  16. {
  17.     std::cout << "in ButtonDelegate() ctor: \n" << endl;
  18.     connect(button, SIGNAL(clicked()), qApp, SLOT(aboutQt()));
  19.     std::cout << "after ButtonDelegate() ctor is complete \n" << endl;
  20.  
  21. }
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This code crashes at the connect statement. "in ButtonDelegate()..." is printed to the console and "after ButtonDelegate().." is not printed.

Does anyone have an idea what I am getting wrong?