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POQt/C++ Error handling
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  1. POQt/C++ Error handling
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    copied!<p>I've been doing a lot of research about handling errors with Qt/C++ and I'm still as lost as when I started. Maybe I'm looking for an easy way out (like other languages provide). One, in particular, provides for an unhandled exception which I use religiously. When the program encounters a problem, it throws the unhandled exception so that I can create my own error report. That report gets sent from my customers machine to a server online which I then read later.</p> <p>The problem that I'm having with C++ is that any error handling that's done has to be thought of BEFORE hand (think try/catch or massive conditionals). In my experience, problems in code are not thought of before hand else there wouldn't be a problem to begin with.</p> <p>Writing a cross-platform application without a cross-platform error handling/reporting/trace mechanism is a little scary to me.</p> <p>My question is: Is there any kind of Qt or C++ Specific "catch-all" error trapping mechanism that I can use in my application so that, if something does go wrong I can, at least, write a report before it crashes?</p> <p>Example:</p> <pre><code> class MainWindow: public QMainWindow { [...] public slots: void add_clicked(); } void MainWindow::add_clicked() { QFileDialog dlg(this, Qt::Sheet); QString filename = dlg.getOpenFileName(this); if(!filename.isEmpty()) { QStringList path = filename.split(QDir::separator()); QString file = path.at(path.count()); // Index out of range assertion. if(!lst_tables->openDatabase(filename)) { [...] } } } </code></pre> <p>I want this error to be caught as an unhandled exception AND the application to quit without showing the user the default crash window on Windows/Mac operating system. I just want it to quit nicely after writing the assertion message to a file, etc.</p>
 

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