diff --git a/sources/diagramprintdialog.cpp b/sources/diagramprintdialog.cpp
index 965c6cbb6..2eedf567a 100644
--- a/sources/diagramprintdialog.cpp
+++ b/sources/diagramprintdialog.cpp
@@ -351,13 +351,31 @@ void DiagramPrintDialog::browseFilePrintTypeDialog() {
 	@param fit_page Booleen indiquant s'il faut adapter les schemas aux pages
 	ou non
 	@param options Options de rendu
-*/
-void DiagramPrintDialog::print(const QList<Diagram *> &diagrams, bool fit_page, const ExportProperties options) {
-	//qDebug() << "Demande d'impression de " << diagrams.count() << "schemas.";
-	
-	// QPainter utiliser pour effectuer le rendu
-	QPainter qp(printer_);
-	
+*/
+void DiagramPrintDialog::print(const QList<Diagram *> &diagrams, bool fit_page, const ExportProperties options) {
+	//qDebug() << "Demande d'impression de " << diagrams.count() << "schemas.";
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
+    #ifdef Q_OS_WIN
+        #ifdef QT_DEBUG
+            qDebug() << "--";
+            qDebug() << "DiagramPrintDialog::print  printer_->resolution() before " << printer_->resolution();
+            qDebug() << "DiagramPrintDialog::print  screennumber " << QApplication::desktop()->screenNumber();
+        #endif
+
+        QScreen *srn = QApplication::screens().at(QApplication::desktop()->screenNumber());
+        qreal dotsPerInch = (qreal)srn->logicalDotsPerInch();
+        printer_->setResolution(dotsPerInch);
+
+        #ifdef QT_DEBUG
+            qDebug() << "DiagramPrintDialog::print  dotsPerInch " << dotsPerInch;
+            qDebug() << "DiagramPrintDialog::print  printer_->resolution() after" << printer_->resolution();
+            qDebug() << "--";
+        #endif
+    #endif
+#endif
+	// QPainter utiliser pour effectuer le rendu
+	QPainter qp(printer_);
+	
 	// cas special : il n'y a aucun schema a imprimer
 	if (!diagrams.count()) {
 		qp.end();
diff --git a/sources/main.cpp b/sources/main.cpp
index c240af60a..357a1ec7c 100644
--- a/sources/main.cpp
+++ b/sources/main.cpp
@@ -29,17 +29,13 @@ int main(int argc, char **argv)
 		//Some setup, notably to use with QSetting.
 	QCoreApplication::setOrganizationName("QElectroTech");
 	QCoreApplication::setOrganizationDomain("qelectrotech.org");
-	QCoreApplication::setApplicationName("QElectroTech");
-		//Creation and execution of the application
-		//HighDPI
-#if QT_VERSION >= QT_VERSION_CHECK (5, 6, 0)
-#if defined Q_OS_MAC
-    QApplication::setAttribute (Qt::AA_EnableHighDpiScaling);
-#elif !defined(Q_OS_MAC)
-    QApplication::setAttribute (Qt::AA_DisableHighDpiScaling);
-#else
-    qputenv("QT_DEVICE_PIXEL_RATIO", QByteArray("1"));
-#endif
-#endif
-	return(QETApp(argc, argv).exec());
-}
+	QCoreApplication::setApplicationName("QElectroTech");
+		//Creation and execution of the application
+		//HighDPI
+#if QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)
+    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+#else
+    qputenv("QT_DEVICE_PIXEL_RATIO", QByteArray("auto"));
+#endif
+	return(QETApp(argc, argv).exec());
+}