High-DPI: Remove usages of Qt::AA_UseHighDpiPixmaps

Remove usages of Qt::AA_UseHighDpiPixmaps from examples/.
This flag is now on by default, and can't be disabled.

Task-number: QTBUG-83092
Change-Id: Ie28622f816da2fe28d4ab272d45ea20bd051d5f3
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

1 files changed, 0 insertions, 10 deletions

diff --git a/examples/widgets/widgets/icons/mainwindow.cpp b/examples/widgets/widgets/icons/mainwindow.cpp
index aa5ed852fd..bd14bff518 100644
--- a/examples/widgets/widgets/icons/mainwindow.cpp
+++ b/examples/widgets/widgets/icons/mainwindow.cpp
@@ -320,12 +320,6 @@ void MainWindow::loadImages(const QStringList &fileNames)
     }
 }
 
-void MainWindow::useHighDpiPixmapsChanged(int checkState)
-{
-    QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps, checkState == Qt::Checked);
-    changeIcon();
-}
-
 //! [20]
 void MainWindow::removeAllImages()
 {
@@ -444,10 +438,6 @@ QWidget *MainWindow::createHighDpiIconSizeGroupBox()
     screenNameLabel = new QLabel(highDpiGroupBox);
     layout->addRow(tr("Screen:"), screenNameLabel);
     layout->addRow(tr("Device pixel ratio:"), devicePixelRatioLabel);
-    QCheckBox *highDpiPixmapsCheckBox = new QCheckBox(QLatin1String("Qt::AA_UseHighDpiPixmaps"));
-    highDpiPixmapsCheckBox->setChecked(QCoreApplication::testAttribute(Qt::AA_UseHighDpiPixmaps));
-    connect(highDpiPixmapsCheckBox, &QCheckBox::stateChanged, this, &MainWindow::useHighDpiPixmapsChanged);
-    layout->addRow(highDpiPixmapsCheckBox);
     return highDpiGroupBox;
 }