QtGui documentation: cleanup

Cleanup the QtGui documentation:
 - use new signal/slot syntax
 - use range-based for loop instead foreach

Change-Id: Id49ff2cbe78f28a06ca0fb63e6ca6f7dc2736f7b
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@qt.io>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/gui/doc/snippets/separations/screenwidget.cpp b/src/gui/doc/snippets/separations/screenwidget.cpp
index 6f8be49bfa..d562991d26 100644
--- a/src/gui/doc/snippets/separations/screenwidget.cpp
+++ b/src/gui/doc/snippets/separations/screenwidget.cpp
@@ -105,8 +105,8 @@ ScreenWidget::ScreenWidget(QWidget *parent, QColor initialColor,
     //invertButton->setOn(inverted);
     invertButton->setEnabled(false);
 
-    connect(colorButton, SIGNAL(clicked()), this, SLOT(setColor()));
-    connect(invertButton, SIGNAL(clicked()), this, SLOT(invertImage()));
+    connect(colorButton, &QPushButton::clicked, this, &ScreenWidget::setColor);
+    connect(invertButton, &QPushButton::clicked, this, &ScreenWidget::invertImage);
 
     QGridLayout *gridLayout = new QGridLayout;
     gridLayout->addWidget(imageLabel, 0, 0, 1, 2);