MainWindow 0 0 800 424 Conference Manager 26 260 241 141 QLayout::SetDefaultConstraint 0 0 Start Conference 0 0 Add Profile 25 4 751 241 535 260 241 141 0 0 About 0 0 Exit 281 260 241 141 0 0 Edit Profile 0 0 Delete Profile mainPBQuit clicked() MainWindow close() 411 440 399 239