On Sep 22, 2014, at 10:25 AM, william.croc...@analog.com wrote: > On 09/22/2014 11:10 AM, Thiago Macieira wrote: >> On Monday 22 September 2014 11:01:23 william.croc...@analog.com wrote: >>> Gang: >>> >>> While we are talking about the need for a Q[Core]Application... >>> >>> What is the difference between; >>> >>> QCoreApplication(argv,argc); >>> >>> and >>> >>> QApplication(argc,argc,false); // Note GUIEnabled=false >> >> It creates a QApplication, which enables a bunch of backend things, without >> also connecting to the display server. > > When my normally-GUI application is run "off-line" > (to create plot images in files as opposed to drawing > them on the screen) I found that I had to use the > second option. > > I do not remember the specifics... might have had something > to do with fontconfig or the use of the QImage class. > >> >> Note that this constructor is removed in Qt 5. >> > > Is that another reason why I can never use Qt 5?
I have a similar problem with a “console” program that creates PDF reports that include graphics. I have to use the QApplication, with connections to the Display and all that implies when all I really want to do is use QPainter and QPdfwriter to create a report. It is rather inconvenient, but workable. Karl _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
