How to disable the close button of window using Qt?

Question

I want to disable the close button on the window (main application window) when an operation starts so user can\'t exit the application and enable it again when the operatio

Answer 1

If you want disable button, you can use next:

auto flags = windowFlags();//save current configuration
//your main configuration which do the trick
setWindowFlags(Qt::CustomizeWindowHint | Qt::WindowTitleHint | Qt::WindowMinMaxButtonsHint );
//...
setWindowFlags(flags);//restore

If you are sure that such "feature" will not irritate your users, you can use this, in another case use link from the comment.