use native OS dialogs by default for load/save

Software/PC_Application/LibreVNA-GUI/Calibration/calibration.cpp

@@ -5,6 +5,7 @@
 #include "unit.h"
 #include "Util/util.h"
 #include "LibreCAL/librecaldialog.h"
+#include "preferences.h"
 
 #include "Eigen/Dense"
 
@@ -1489,7 +1490,7 @@ bool Calibration::toFile(QString filename)
 {
     if(filename.isEmpty()) {
         QString fn = descriptiveCalName();
-        filename = QFileDialog::getSaveFileName(nullptr, "Save calibration data", fn, "Calibration files (*.cal)", nullptr, QFileDialog::DontUseNativeDialog);
+        filename = QFileDialog::getSaveFileName(nullptr, "Save calibration data", fn, "Calibration files (*.cal)", nullptr, Preferences::QFileDialogOptions());
         if(filename.isEmpty()) {
             // aborted selection
             return false;
@@ -1513,7 +1514,7 @@ bool Calibration::toFile(QString filename)
 bool Calibration::fromFile(QString filename)
 {
     if(filename.isEmpty()) {
-        filename = QFileDialog::getOpenFileName(nullptr, "Load calibration data", "", "Calibration files (*.cal)", nullptr, QFileDialog::DontUseNativeDialog);
+        filename = QFileDialog::getOpenFileName(nullptr, "Load calibration data", "", "Calibration files (*.cal)", nullptr, Preferences::QFileDialogOptions());
         if(filename.isEmpty()) {
             // aborted selection
             return false;

Software/PC_Application/LibreVNA-GUI/Calibration/calkitdialog.cpp

@@ -2,6 +2,7 @@
 
 #include "ui_calkitdialog.h"
 #include "CustomWidgets/informationbox.h"
+#include "preferences.h"
 
 #include <QPushButton>
 #include <QDebug>
@@ -88,7 +89,7 @@ CalkitDialog::CalkitDialog(Calkit &c, QWidget *parent) :
         accept();
     });
     connect(ui->buttonBox->button(QDialogButtonBox::Open), &QPushButton::clicked, [=](){
-        auto filename = QFileDialog::getOpenFileName(this, "Open calibration kit coefficients", "", "Calibration kit files (*.calkit)", nullptr, QFileDialog::DontUseNativeDialog);
+        auto filename = QFileDialog::getOpenFileName(this, "Open calibration kit coefficients", "", "Calibration kit files (*.calkit)", nullptr, Preferences::QFileDialogOptions());
         if(filename.length() > 0) {
             try {
                 kit = Calkit::fromFile(filename);
@@ -102,7 +103,7 @@ CalkitDialog::CalkitDialog(Calkit &c, QWidget *parent) :
     });
 
     connect(ui->buttonBox->button(QDialogButtonBox::Save), &QPushButton::clicked, [=](){
-        auto filename = QFileDialog::getSaveFileName(this, "Save calibration kit coefficients", "", "Calibration kit files (*.calkit)", nullptr, QFileDialog::DontUseNativeDialog);
+        auto filename = QFileDialog::getSaveFileName(this, "Save calibration kit coefficients", "", "Calibration kit files (*.calkit)", nullptr, Preferences::QFileDialogOptions());
         if(filename.length() > 0) {
             parseEntries();
             kit.toFile(filename);

Software/PC_Application/LibreVNA-GUI/CustomWidgets/csvimport.cpp

@@ -1,6 +1,7 @@
 #include "csvimport.h"
 #include "ui_csvimport.h"
 #include "Traces/trace.h"
+#include "preferences.h"
 
 #include <QFileDialog>
 #include <QDebug>
@@ -63,7 +64,7 @@ void CSVImport::selectTrace(unsigned int index)
 
 void CSVImport::on_browse_clicked()
 {
-    auto filename = QFileDialog::getOpenFileName(nullptr, "Open measurement file", "", "CSV files (*.csv)", nullptr, QFileDialog::DontUseNativeDialog);
+    auto filename = QFileDialog::getOpenFileName(nullptr, "Open measurement file", "", "CSV files (*.csv)", nullptr, Preferences::QFileDialogOptions());
     if (filename.length() > 0) {
         ui->file->setText(filename);
         evaluateFile();

Software/PC_Application/LibreVNA-GUI/CustomWidgets/touchstoneimport.cpp

@@ -1,6 +1,7 @@
 #include "touchstoneimport.h"
 
 #include "ui_touchstoneimport.h"
+#include "preferences.h"
 
 #include <QFileDialog>
 #include <QDebug>
@@ -111,7 +112,7 @@ void TouchstoneImport::setFile(QString filename)
 
 void TouchstoneImport::on_browse_clicked()
 {
-    auto filename = QFileDialog::getOpenFileName(nullptr, "Open measurement file", "", "Touchstone files (*.s1p *.s2p *.s3p *.s4p)", nullptr, QFileDialog::DontUseNativeDialog);
+    auto filename = QFileDialog::getOpenFileName(nullptr, "Open measurement file", "", "Touchstone files (*.s1p *.s2p *.s3p *.s4p)", nullptr, Preferences::QFileDialogOptions());
     if (filename.length() > 0) {
         ui->file->setText(filename);
     }

Software/PC_Application/LibreVNA-GUI/Device/LibreVNA/amplitudecaldialog.cpp

@@ -44,7 +44,7 @@ AmplitudeCalDialog::AmplitudeCalDialog(LibreVNADriver *dev, QWidget *parent) :
     connect(ui->saveFile, &QPushButton::clicked, [=](){
         auto fileEnding = pointType() == Protocol::PacketType::SourceCalPoint ? ".srccal" : ".recvcal";
         auto fileFilter = QString("Amplitude calibration files (*")+fileEnding+")";
-        auto filename = QFileDialog::getSaveFileName(nullptr, "Save calibration data", "", fileFilter, nullptr, QFileDialog::DontUseNativeDialog);
+        auto filename = QFileDialog::getSaveFileName(nullptr, "Save calibration data", "", fileFilter, nullptr, Preferences::QFileDialogOptions());
         if(filename.isEmpty()) {
             // aborted selection
             return;
@@ -70,7 +70,7 @@ AmplitudeCalDialog::AmplitudeCalDialog(LibreVNADriver *dev, QWidget *parent) :
     connect(ui->loadFile, &QPushButton::clicked, [=](){
         auto fileEnding = pointType() == Protocol::PacketType::SourceCalPoint ? ".srccal" : ".recvcal";
         auto fileFilter = QString("Amplitude calibration files (*")+fileEnding+")";
-        auto filename = QFileDialog::getOpenFileName(nullptr, "Save calibration data", "", fileFilter, nullptr, QFileDialog::DontUseNativeDialog);
+        auto filename = QFileDialog::getOpenFileName(nullptr, "Save calibration data", "", fileFilter, nullptr, Preferences::QFileDialogOptions());
         if(filename.isEmpty()) {
             // aborted selection
             return;

Software/PC_Application/LibreVNA-GUI/Device/LibreVNA/devicepacketlogview.cpp

@@ -3,6 +3,7 @@
 
 #include "CustomWidgets/informationbox.h"
 #include "unit.h"
+#include "preferences.h"
 
 #include <fstream>
 #include <iomanip>
@@ -28,7 +29,7 @@ DevicePacketLogView::DevicePacketLogView(QWidget *parent) :
         updateTree();
     });
     connect(ui->buttonBox->button(QDialogButtonBox::Save), &QPushButton::clicked, [=](){
-        QString filename = QFileDialog::getSaveFileName(nullptr, "Load LibreVNA log data", "", "LibreVNA log files (*.vnalog)", nullptr, QFileDialog::DontUseNativeDialog);
+        QString filename = QFileDialog::getSaveFileName(nullptr, "Load LibreVNA log data", "", "LibreVNA log files (*.vnalog)", nullptr, Preferences::QFileDialogOptions());
         if(filename.isEmpty()) {
             // aborted selection
             return;
@@ -42,7 +43,7 @@ DevicePacketLogView::DevicePacketLogView(QWidget *parent) :
         file.close();
     });
     connect(ui->buttonBox->button(QDialogButtonBox::Open), &QPushButton::clicked, [=](){
-        QString filename = QFileDialog::getOpenFileName(nullptr, "Load LibreVNA log data", "", "LibreVNA log files (*.vnalog)", nullptr, QFileDialog::DontUseNativeDialog);
+        QString filename = QFileDialog::getOpenFileName(nullptr, "Load LibreVNA log data", "", "LibreVNA log files (*.vnalog)", nullptr, Preferences::QFileDialogOptions());
         if(filename.isEmpty()) {
             // aborted selection
             return;

Software/PC_Application/LibreVNA-GUI/Device/LibreVNA/firmwareupdatedialog.cpp

@@ -3,6 +3,7 @@
 #include "ui_firmwareupdatedialog.h"
 #include "../../VNA_embedded/Application/Communication/PacketConstants.h"
 #include "CustomWidgets/informationbox.h"
+#include "preferences.h"
 
 #include <QFileDialog>
 #include <QStyle>
@@ -51,7 +52,7 @@ bool FirmwareUpdateDialog::FirmwareUpdate(LibreVNADriver *dev, QString file)
 void FirmwareUpdateDialog::on_bFile_clicked()
 {
     ui->bStart->setEnabled(false);
-    auto filename = QFileDialog::getOpenFileName(nullptr, "Open firmware file", "", "Firmware file (*.vnafw)", nullptr, QFileDialog::DontUseNativeDialog);
+    auto filename = QFileDialog::getOpenFileName(nullptr, "Open firmware file", "", "Firmware file (*.vnafw)", nullptr, Preferences::QFileDialogOptions());
     if (filename.length() > 0) {
         ui->lFile->setText(filename);
         reloadFile();

Software/PC_Application/LibreVNA-GUI/Device/devicelog.cpp

@@ -1,6 +1,7 @@
 #include "devicelog.h"
 
 #include "ui_devicelog.h"
+#include "preferences.h"
 
 #include <QScrollBar>
 #include <QFileDialog>
@@ -65,7 +66,7 @@ void DeviceLog::clear()
 
 void DeviceLog::on_bToFile_clicked()
 {
-    auto filename = QFileDialog::getSaveFileName(this, "Select file for device log", "", "", nullptr, QFileDialog::DontUseNativeDialog);
+    auto filename = QFileDialog::getSaveFileName(this, "Select file for device log", "", "", nullptr, Preferences::QFileDialogOptions());
     if(filename.length() > 0) {
         // create file
         ofstream file;

Software/PC_Application/LibreVNA-GUI/SpectrumAnalyzer/tracewidgetsa.cpp

@@ -23,7 +23,7 @@ void TraceWidgetSA::exportDialog()
 
 void TraceWidgetSA::importDialog()
 {
-    auto filename = QFileDialog::getOpenFileName(nullptr, "Open measurement file", "", "CSV files (*.csv)", nullptr, QFileDialog::DontUseNativeDialog);
+    auto filename = QFileDialog::getOpenFileName(nullptr, "Open measurement file", "", "CSV files (*.csv)", nullptr, Preferences::QFileDialogOptions());
     if (!filename.isEmpty()) {
         try {
             std::vector<Trace*> traces;

Software/PC_Application/LibreVNA-GUI/Traces/eyediagramplot.cpp

@@ -396,7 +396,7 @@ void EyeDiagramPlot::updateContextMenu()
     auto image = new QAction("Save image...", contextmenu);
     contextmenu->addAction(image);
     connect(image, &QAction::triggered, [=]() {
-        auto filename = QFileDialog::getSaveFileName(nullptr, "Save plot image", "", "PNG image files (*.png)", nullptr, QFileDialog::DontUseNativeDialog);
+        auto filename = QFileDialog::getSaveFileName(nullptr, "Save plot image", "", "PNG image files (*.png)", nullptr, Preferences::QFileDialogOptions());
         if(filename.isEmpty()) {
             // aborted selection
             return;

Software/PC_Application/LibreVNA-GUI/Traces/tracecsvexport.cpp

@@ -2,7 +2,7 @@
 
 #include "ui_tracecsvexport.h"
 #include "csv.h"
-
+#include "preferences.h"
 #include "traceaxis.h"
 
 #include <QDialogButtonBox>
@@ -72,7 +72,7 @@ void TraceCSVExport::on_buttonBox_accepted()
         return;
     }
 
-    auto filename = QFileDialog::getSaveFileName(nullptr, "Save calibration data", "", "CSV files (*.csv)", nullptr, QFileDialog::DontUseNativeDialog);
+    auto filename = QFileDialog::getSaveFileName(nullptr, "Save calibration data", "", "CSV files (*.csv)", nullptr, Preferences::QFileDialogOptions());
     if(filename.isEmpty()) {
         // aborted selection
         return;

Software/PC_Application/LibreVNA-GUI/Traces/tracepolar.cpp

@@ -2,6 +2,7 @@
 
 #include "Marker/marker.h"
 #include "Util/util.h"
+#include "preferences.h"
 
 #include <QFileDialog>
 
@@ -251,7 +252,7 @@ void TracePolar::updateContextMenu()
     auto image = new QAction("Save image...", contextmenu);
     contextmenu->addAction(image);
     connect(image, &QAction::triggered, [=]() {
-        auto filename = QFileDialog::getSaveFileName(nullptr, "Save plot image", "", "PNG image files (*.png)", nullptr, QFileDialog::DontUseNativeDialog);
+        auto filename = QFileDialog::getSaveFileName(nullptr, "Save plot image", "", "PNG image files (*.png)", nullptr, Preferences::QFileDialogOptions());
         if(filename.isEmpty()) {
             // aborted selection
             return;

Software/PC_Application/LibreVNA-GUI/Traces/tracetouchstoneexport.cpp

@@ -2,6 +2,7 @@
 
 #include "ui_tracetouchstoneexport.h"
 #include "touchstone.h"
+#include "preferences.h"
 
 #include <QDebug>
 #include <QFileDialog>
@@ -41,7 +42,7 @@ bool TraceTouchstoneExport::setPortNum(int ports)
 
 void TraceTouchstoneExport::on_buttonBox_accepted()
 {
-    auto filename = QFileDialog::getSaveFileName(this, "Select file for exporting traces", "", "Touchstone files (*.s1p *.s2p *.s3p *.s4p)", nullptr, QFileDialog::DontUseNativeDialog);
+    auto filename = QFileDialog::getSaveFileName(this, "Select file for exporting traces", "", "Touchstone files (*.s1p *.s2p *.s3p *.s4p)", nullptr, Preferences::QFileDialogOptions());
     if(filename.length() > 0) {
         auto ports = ui->sbPorts->value();
         auto t = Touchstone(ports);

Software/PC_Application/LibreVNA-GUI/Traces/tracewaterfall.cpp

@@ -212,7 +212,7 @@ void TraceWaterfall::updateContextMenu()
     auto image = new QAction("Save image...", contextmenu);
     contextmenu->addAction(image);
     connect(image, &QAction::triggered, [=]() {
-        auto filename = QFileDialog::getSaveFileName(nullptr, "Save plot image", "", "PNG image files (*.png)", nullptr, QFileDialog::DontUseNativeDialog);
+        auto filename = QFileDialog::getSaveFileName(nullptr, "Save plot image", "", "PNG image files (*.png)", nullptr, Preferences::QFileDialogOptions());
         if(filename.isEmpty()) {
             // aborted selection
             return;

Software/PC_Application/LibreVNA-GUI/Traces/tracexyplot.cpp

@@ -349,7 +349,7 @@ void TraceXYPlot::updateContextMenu()
     auto image = new QAction("Save image...", contextmenu);
     contextmenu->addAction(image);
     connect(image, &QAction::triggered, [=]() {
-        auto filename = QFileDialog::getSaveFileName(nullptr, "Save plot image", "", "PNG image files (*.png)", nullptr, QFileDialog::DontUseNativeDialog);
+        auto filename = QFileDialog::getSaveFileName(nullptr, "Save plot image", "", "PNG image files (*.png)", nullptr, Preferences::QFileDialogOptions());
         if(filename.isEmpty()) {
             // aborted selection
             return;

Software/PC_Application/LibreVNA-GUI/Traces/xyplotaxisdialog.cpp

@@ -2,6 +2,7 @@
 
 #include "ui_xyplotaxisdialog.h"
 #include "traceaxis.h"
+#include "preferences.h"
 
 #include <QFileDialog>
 #include <QStandardItemModel>
@@ -239,7 +240,7 @@ XYplotAxisDialog::XYplotAxisDialog(TraceXYPlot *plot) :
         removeLine(index);
     });
     connect(ui->exportLines, &QPushButton::clicked, this, [=](){
-        QString filename = QFileDialog::getSaveFileName(nullptr, "Save limit lines", "", "Limit files (*.limits)", nullptr, QFileDialog::DontUseNativeDialog);
+        QString filename = QFileDialog::getSaveFileName(nullptr, "Save limit lines", "", "Limit files (*.limits)", nullptr, Preferences::QFileDialogOptions());
         if(filename.isEmpty()) {
             // aborted selection
             return;
@@ -262,7 +263,7 @@ XYplotAxisDialog::XYplotAxisDialog(TraceXYPlot *plot) :
 
     });
     connect(ui->importLines, &QPushButton::clicked, [=](){
-        QString filename = QFileDialog::getOpenFileName(nullptr, "Load limit lines", "", "Limit files (*.limits)", nullptr, QFileDialog::DontUseNativeDialog);
+        QString filename = QFileDialog::getOpenFileName(nullptr, "Load limit lines", "", "Limit files (*.limits)", nullptr, Preferences::QFileDialogOptions());
         ifstream file;
         file.open(filename.toStdString());
         if(!file.is_open()) {

Software/PC_Application/LibreVNA-GUI/VNA/Deembedding/matchingnetwork.cpp

@@ -764,7 +764,7 @@ void MatchingComponent::mouseDoubleClickEvent(QMouseEvent *e)
     Q_UNUSED(e);
     if(type == Type::DefinedThrough || type == Type::DefinedShunt) {
         // select new touchstone file
-        auto filename = QFileDialog::getOpenFileName(nullptr, "Open measurement file", "", "Touchstone files (*.s2p)", nullptr, QFileDialog::DontUseNativeDialog);
+        auto filename = QFileDialog::getOpenFileName(nullptr, "Open measurement file", "", "Touchstone files (*.s2p)", nullptr, Preferences::QFileDialogOptions());
         if (!filename.isEmpty()) {
             try {
                 *touchstone = Touchstone::fromFile(filename.toStdString());

Software/PC_Application/LibreVNA-GUI/VNA/tracewidgetvna.cpp

@@ -56,7 +56,7 @@ void TraceWidgetVNA::exportTouchstone()
 
 void TraceWidgetVNA::importDialog()
 {
-    auto filename = QFileDialog::getOpenFileName(nullptr, "Open measurement file", "", "Touchstone files (*.s1p *.s2p *.s3p *.s4p);;CSV files (*.csv)", nullptr, QFileDialog::DontUseNativeDialog);
+    auto filename = QFileDialog::getOpenFileName(nullptr, "Open measurement file", "", "Touchstone files (*.s1p *.s2p *.s3p *.s4p);;CSV files (*.csv)", nullptr, Preferences::QFileDialogOptions());
     if (!filename.isEmpty()) {
         try {
             std::vector<Trace*> traces;

Software/PC_Application/LibreVNA-GUI/VNA/vna.cpp

@@ -228,7 +228,7 @@ VNA::VNA(AppWindow *window, QString name)
        if(window->getDevice()) {
            auto key = "DefaultCalibration"+window->getDevice()->getSerial();
            QSettings settings;
-           auto filename = QFileDialog::getOpenFileName(nullptr, "Load calibration data", settings.value(key).toString(), "Calibration files (*.cal)", nullptr, QFileDialog::DontUseNativeDialog);
+           auto filename = QFileDialog::getOpenFileName(nullptr, "Load calibration data", settings.value(key).toString(), "Calibration files (*.cal)", nullptr, Preferences::QFileDialogOptions());
            if(!filename.isEmpty()) {
                settings.setValue(key, filename);
                removeDefaultCal->setEnabled(true);

Software/PC_Application/LibreVNA-GUI/appwindow.cpp

@@ -229,7 +229,7 @@ void AppWindow::SetupMenu()
     connect(ui->actionDisconnect, &QAction::triggered, this, &AppWindow::DisconnectDevice);
     connect(ui->actionQuit, &QAction::triggered, this, &AppWindow::close);
     connect(ui->actionSave_setup, &QAction::triggered, [=](){
-        auto filename = QFileDialog::getSaveFileName(nullptr, "Save setup data", "", "Setup files (*.setup)", nullptr, QFileDialog::DontUseNativeDialog);
+        auto filename = QFileDialog::getSaveFileName(nullptr, "Save setup data", "", "Setup files (*.setup)", nullptr, Preferences::QFileDialogOptions());
         if(filename.isEmpty()) {
             // aborted selection
             return;
@@ -237,7 +237,7 @@ void AppWindow::SetupMenu()
         SaveSetup(filename);
     });
     connect(ui->actionLoad_setup, &QAction::triggered, [=](){
-        auto filename = QFileDialog::getOpenFileName(nullptr, "Load setup data", "", "Setup files (*.setup)", nullptr, QFileDialog::DontUseNativeDialog);
+        auto filename = QFileDialog::getOpenFileName(nullptr, "Load setup data", "", "Setup files (*.setup)", nullptr, Preferences::QFileDialogOptions());
         if(filename.isEmpty()) {
             // aborted selection
             return;

Software/PC_Application/LibreVNA-GUI/mode.cpp

@@ -141,7 +141,7 @@ Mode::Type Mode::TypeFromName(QString s)
 
 void Mode::saveSreenshot()
 {
-    auto filename = QFileDialog::getSaveFileName(nullptr, "Save plot image", "", "PNG image files (*.png)", nullptr, QFileDialog::DontUseNativeDialog);
+    auto filename = QFileDialog::getSaveFileName(nullptr, "Save plot image", "", "PNG image files (*.png)", nullptr, Preferences::QFileDialogOptions());
     if(filename.isEmpty()) {
         // aborted selection
         return;

Software/PC_Application/LibreVNA-GUI/preferences.cpp

@@ -68,7 +68,7 @@ PreferencesDialog::PreferencesDialog(Preferences *pref, QWidget *parent) :
        ui->StartupStack->setCurrentWidget(ui->StartupPageSetupFile);
     });
     connect(ui->StartupBrowse, &QPushButton::clicked, [=](){
-       ui->StartupSetupFile->setText(QFileDialog::getOpenFileName(nullptr, "Select startup setup file", "", "Setup files (*.setup)", nullptr, QFileDialog::DontUseNativeDialog));
+       ui->StartupSetupFile->setText(QFileDialog::getOpenFileName(nullptr, "Select startup setup file", "", "Setup files (*.setup)", nullptr, Preferences::QFileDialogOptions()));
     });
     ui->StartupSweepStart->setUnit("Hz");
     ui->StartupSweepStart->setPrefixes(" kMG");
@@ -186,7 +186,7 @@ PreferencesDialog::PreferencesDialog(Preferences *pref, QWidget *parent) :
         updateFromGUI();
     });
     connect(ui->buttonBox->button(QDialogButtonBox::Save), &QPushButton::clicked, [=](){
-        auto filename = QFileDialog::getSaveFileName(this, "Save preferences", "", "LibreVNA preferences files (*.vnapref)", nullptr, QFileDialog::DontUseNativeDialog);
+        auto filename = QFileDialog::getSaveFileName(this, "Save preferences", "", "LibreVNA preferences files (*.vnapref)", nullptr, Preferences::QFileDialogOptions());
         if(filename.length() > 0) {
            if(!filename.toLower().endsWith(".vnapref")) {
                filename.append(".vnapref");
@@ -199,7 +199,7 @@ PreferencesDialog::PreferencesDialog(Preferences *pref, QWidget *parent) :
         }
     });
     connect(ui->buttonBox->button(QDialogButtonBox::Open), &QPushButton::clicked, [=](){
-        auto filename = QFileDialog::getOpenFileName(this, "Load preferences", "", "LibreVNA preferences files (*.vnapref)", nullptr, QFileDialog::DontUseNativeDialog);
+        auto filename = QFileDialog::getOpenFileName(this, "Load preferences", "", "LibreVNA preferences files (*.vnapref)", nullptr, Preferences::QFileDialogOptions());
         if(filename.length() > 0) {
            ifstream file;
            file.open(filename.toStdString());
@@ -334,6 +334,7 @@ void PreferencesDialog::setInitialGUIState()
 
     ui->DebugMaxUSBlogSize->setValue(p->Debug.USBlogSizeLimit);
     ui->DebugSaveTraceData->setChecked(p->Debug.saveTraceData);
+    ui->DebugUseNativeDialogs->setChecked(p->Debug.useNativeDialogs);
 
     QTreeWidgetItem *item = ui->treeWidget->topLevelItem(0);
     if (item != nullptr) {
@@ -446,6 +447,7 @@ void PreferencesDialog::updateFromGUI()
 
     p->Debug.USBlogSizeLimit = ui->DebugMaxUSBlogSize->value();
     p->Debug.saveTraceData = ui->DebugSaveTraceData->isChecked();
+    p->Debug.useNativeDialogs = ui->DebugUseNativeDialogs->isChecked();
 
     p->nonTrivialWriting();
 }
@@ -522,6 +524,14 @@ void Preferences::setDefault(std::vector<Savable::SettingDescription> descr)
     }
 }
 
+QFileDialog::Options Preferences::QFileDialogOptions(QFileDialog::Options option)
+{
+    if(!instance.Debug.useNativeDialogs) {
+        option = (QFileDialog::Option) ((int) option | QFileDialog::DontUseNativeDialog);
+    }
+    return option;
+}
+
 void Preferences::fromJSON(nlohmann::json j)
 {
     parseJSON(j, descr);

Software/PC_Application/LibreVNA-GUI/preferences.h

@@ -7,6 +7,7 @@
 #include "Device/LibreVNA/Compound/compounddevice.h"
 
 #include <QDialog>
+#include <QFileDialog>
 #include <QVariant>
 #include <exception>
 
@@ -61,6 +62,8 @@ public:
 
     void manualTCPport() { TCPoverride = true; }
 
+    static QFileDialog::Options QFileDialogOptions(QFileDialog::Options option = (QFileDialog::Options) 0x00000000);
+
     struct {
         bool ConnectToFirstDevice;
         bool RememberSweepSettings;
@@ -190,6 +193,7 @@ public:
     struct {
         double USBlogSizeLimit;
         bool saveTraceData;
+        bool useNativeDialogs;
     } Debug;
 
     bool TCPoverride; // in case of manual port specification via command line
@@ -310,6 +314,7 @@ private:
         {&StreamingServers.SANormalizedData.port, "StreamingServers.SANormalizedData.port", 19101},
         {&Debug.USBlogSizeLimit, "Debug.USBlogSizeLimit", 10000000.0},
         {&Debug.saveTraceData, "Debug.saveTraceData", false},
+        {&Debug.useNativeDialogs, "Debug.useNativeDialogs", true},
     }};
 };
 

Software/PC_Application/LibreVNA-GUI/preferencesdialog.ui

@@ -98,7 +98,7 @@
        </size>
       </property>
       <property name="currentIndex">
-       <number>2</number>
+       <number>6</number>
       </property>
       <widget class="QWidget" name="Startup">
        <layout class="QHBoxLayout" name="horizontalLayout_4">
@@ -112,8 +112,8 @@
             <rect>
              <x>0</x>
              <y>0</y>
-             <width>424</width>
+             <width>679</width>
-             <height>852</height>
+             <height>836</height>
             </rect>
            </property>
            <layout class="QVBoxLayout" name="verticalLayout_13">
@@ -703,8 +703,8 @@
             <rect>
              <x>0</x>
              <y>0</y>
-             <width>450</width>
+             <width>696</width>
-             <height>416</height>
+             <height>564</height>
             </rect>
            </property>
            <layout class="QVBoxLayout" name="verticalLayout_21">
@@ -943,7 +943,7 @@
            <property name="geometry">
             <rect>
              <x>0</x>
-             <y>0</y>
+             <y>-400</y>
              <width>679</width>
              <height>964</height>
             </rect>
@@ -2074,8 +2074,8 @@
             <rect>
              <x>0</x>
              <y>0</y>
-             <width>194</width>
+             <width>696</width>
-             <height>146</height>
+             <height>564</height>
             </rect>
            </property>
            <layout class="QHBoxLayout" name="horizontalLayout_19">
@@ -2116,6 +2116,22 @@
                 </layout>
                </widget>
               </item>
+              <item>
+               <widget class="QGroupBox" name="groupBox_25">
+                <property name="title">
+                 <string>Load/save dialogs</string>
+                </property>
+                <layout class="QVBoxLayout" name="verticalLayout_24">
+                 <item>
+                  <widget class="QCheckBox" name="DebugUseNativeDialogs">
+                   <property name="text">
+                    <string>Use native dialogs from OS</string>
+                   </property>
+                  </widget>
+                 </item>
+                </layout>
+               </widget>
+              </item>
               <item>
                <spacer name="verticalSpacer_9">
                 <property name="orientation">

Software/PC_Application/LibreVNA-GUI/savable.cpp

@@ -1,5 +1,6 @@
 #include "savable.h"
 #include "CustomWidgets/informationbox.h"
+#include "preferences.h"
 
 #include <QFileDialog>
 #include <fstream>
@@ -9,7 +10,7 @@ using namespace std;
 
 bool Savable::openFromFileDialog(QString title, QString filetype)
 {
-    auto filename = QFileDialog::getOpenFileName(nullptr, title, "", filetype, nullptr, QFileDialog::DontUseNativeDialog);
+    auto filename = QFileDialog::getOpenFileName(nullptr, title, "", filetype, nullptr, Preferences::QFileDialogOptions());
     if(filename.isEmpty()) {
         // aborted selection
         return false;
@@ -36,7 +37,7 @@ bool Savable::openFromFileDialog(QString title, QString filetype)
 
 bool Savable::saveToFileDialog(QString title, QString filetype, QString ending)
 {
-    auto filename = QFileDialog::getSaveFileName(nullptr, title, "", filetype, nullptr, QFileDialog::DontUseNativeDialog);
+    auto filename = QFileDialog::getSaveFileName(nullptr, title, "", filetype, nullptr, Preferences::QFileDialogOptions());
     if(filename.isEmpty()) {
         // aborted selection
         return false;