+
+ mapper = new QSignalMapper(this);
+ connect(mapper, SIGNAL(mapped(QWidget *)), this, SLOT(chooseFont(QWidget *)));
+
+ connect(ui.chooseInputLine, SIGNAL(clicked()), mapper, SLOT(map()));
+
+ mapper->setMapping(ui.chooseInputLine, ui.demoInputLine);
+
+ connect(ui.chooseStyleSheet, SIGNAL(clicked()), SLOT(chooseStyleSheet()));