My little test app connects just fine to a valid database.

If I change the variables so that I am connecting to "microsoft.com" (for example), I get the expected error message.

If I connect to a valid host with invalid credentials, I get the expected error.

But when I connect to some mySQL databases, my app just freezes while waiting for the connection. No message is ever returned because the app just freezes entirely - forever.

Is there any way to timeout the db.open() or db.isvalid()? Or is there some way to use processevents() to decide that it's time to terminate the attempt?

Qt Code: 
  1. bool MainWindowImpl::createConnection()
  2. {
  3.     QSqlDatabase db = QSqlDatabase::addDatabase("QMYSQL");
  4.     db.setHostName("microsoft.com");
  5.     db.setDatabaseName("thedata");
  6.     db.setUserName("bill");
  7.     db.setPassword("billybob");
  8.  
  9.     if (!db.isValid()){
  10.     	QMessageBox::critical(0,QObject::tr("Database is not valid"),"I can't open the damned thing.");
  11.     	return false;
  12.    	}
  13.    	else{
  14.     if (!db.open()) {
  15.         QMessageBox::critical(0, QObject::tr("Database Error"),db.lastError().text());
  16.         return false;
  17.     }
  18.         QMessageBox::information(0, QObject::tr("Database Opened Just Fine"),"apparently the username/password was valid");
  19.     return true;
  20.    }
  21. }
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