Fix a warning in the VFIO code and attempt to use checkStateChanged instead of stateChanged when compiling with Qt 6.

src/device/vfio.c

@@ -2664,7 +2664,7 @@ vfio_dev_init(vfio_device_t *dev)
                 vfio_region_init(dev, &reg, &dev->vga_mem);   /* memory [A0000:BFFFF] */
 
                 /* Inform that a PCI VGA video card is attached if no video card is emulated. */
-                if (gfxcard == VID_NONE)
+                if (gfxcard[0] == VID_NONE)
                     video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_default);
                 break;
 

src/qt/qt_mainwindow.cpp

@@ -33,6 +33,8 @@
 
 #include "qt_cgasettingsdialog.hpp"
 
+#include "qt_defs.hpp"
+
 extern "C" {
 #include <86box/86box.h>
 #include <86box/config.h>
@@ -936,7 +938,7 @@ MainWindow::closeEvent(QCloseEvent *event)
         questionbox.setCheckBox(chkbox);
         chkbox->setChecked(!confirm_exit);
 
-        QObject::connect(chkbox, &QCheckBox::stateChanged, [](int state) {
+        QObject::connect(chkbox, &QCheckBox::CHECK_STATE_CHANGED, [](int state) {
             confirm_exit = (state == Qt::CheckState::Unchecked);
         });
         questionbox.exec();
@@ -1221,7 +1223,7 @@ MainWindow::on_actionHard_Reset_triggered()
         questionbox.setCheckBox(chkbox);
         chkbox->setChecked(!confirm_reset);
 
-        QObject::connect(chkbox, &QCheckBox::stateChanged, [](int state) {
+        QObject::connect(chkbox, &QCheckBox::CHECK_STATE_CHANGED, [](int state) {
             confirm_reset = (state == Qt::CheckState::Unchecked);
         });
         questionbox.exec();

src/qt/qt_settings.cpp

@@ -32,6 +32,7 @@
 #include "qt_progsettings.hpp"
 #include "qt_harddrive_common.hpp"
 #include "qt_settings_bus_tracking.hpp"
+#include "qt_defs.hpp"
 
 extern "C" {
 #include <86box/86box.h>
@@ -228,7 +229,7 @@ Settings::accept()
         QCheckBox  *chkbox = new QCheckBox(tr("Don't show this message again"));
         questionbox.setCheckBox(chkbox);
         chkbox->setChecked(!confirm_save);
-        QObject::connect(chkbox, &QCheckBox::stateChanged, [](int state) { confirm_save = (state == Qt::CheckState::Unchecked); });
+        QObject::connect(chkbox, &QCheckBox::CHECK_STATE_CHANGED, [](int state) { confirm_save = (state == Qt::CheckState::Unchecked); });
         questionbox.exec();
         if (questionbox.result() == QMessageBox::Cancel) {
             confirm_save = true;

src/qt/qt_vmmanager_details.cpp

@@ -23,6 +23,8 @@ extern "C" {
 #include "qt_progsettings.hpp"
 #include "qt_util.hpp"
 #include "qt_vmmanager_details.hpp"
+#include "qt_defs.hpp"
+
 #include "ui_qt_vmmanager_details.h"
 
 #define TOOLBUTTON_STYLESHEET_LIGHT "QToolButton {background: transparent; border: none; padding: 5px} QToolButton:hover {background: palette(midlight)} QToolButton:pressed {background: palette(mid)}"
@@ -279,8 +281,8 @@ VMManagerDetails::updateData(VMManagerSystem *passed_sysconfig)
     ui->notesTextEdit->setPlainText(passed_sysconfig->notes);
     ui->notesTextEdit->setEnabled(true);
 
-    disconnect(sysconfig->process, &QProcess::stateChanged, this, &VMManagerDetails::updateProcessStatus);
-    connect(sysconfig->process, &QProcess::stateChanged, this, &VMManagerDetails::updateProcessStatus);
+    disconnect(sysconfig->process, &QProcess::CHECK_STATE_CHANGED, this, &VMManagerDetails::updateProcessStatus);
+    connect(sysconfig->process, &QProcess::CHECK_STATE_CHANGED, this, &VMManagerDetails::updateProcessStatus);
 
     disconnect(sysconfig, &VMManagerSystem::windowStatusChanged, this, &VMManagerDetails::updateWindowStatus);
     connect(sysconfig, &VMManagerSystem::windowStatusChanged, this, &VMManagerDetails::updateWindowStatus);

src/qt/qt_vmmanager_main.cpp

@@ -34,6 +34,8 @@
 #include "qt_vmmanager_model.hpp"
 #include "qt_vmmanager_addmachine.hpp"
 
+#include "qt_defs.hpp"
+
 extern VMManagerMainWindow *vmm_main_window;
 
 // https://stackoverflow.com/a/36460740
@@ -515,7 +517,7 @@ VMManagerMain::currentSelectionChanged(const QModelIndex &current,
     if (!current.isValid())
         return;
 
-    disconnect(selected_sysconfig->process, &QProcess::stateChanged, this, &VMManagerMain::vmStateChange);
+    disconnect(selected_sysconfig->process, &QProcess::CHECK_STATE_CHANGED, this, &VMManagerMain::vmStateChange);
     disconnect(selected_sysconfig, &VMManagerSystem::windowStatusChanged, this, &VMManagerMain::vmStateChange);
     disconnect(selected_sysconfig, &VMManagerSystem::clientProcessStatusChanged, this, &VMManagerMain::vmStateChange);
 
@@ -526,7 +528,7 @@ VMManagerMain::currentSelectionChanged(const QModelIndex &current,
     // Emit that the selection changed, include with the process state
     emit selectionOrStateChanged(selected_sysconfig);
 
-    connect(selected_sysconfig->process, &QProcess::stateChanged, this, &VMManagerMain::vmStateChange);
+    connect(selected_sysconfig->process, &QProcess::CHECK_STATE_CHANGED, this, &VMManagerMain::vmStateChange);
     connect(selected_sysconfig, &VMManagerSystem::windowStatusChanged, this, &VMManagerMain::vmStateChange);
     connect(selected_sysconfig, &VMManagerSystem::clientProcessStatusChanged, this, &VMManagerMain::vmStateChange);
 

src/qt/qt_vmmanager_system.cpp

@@ -30,6 +30,8 @@
 // #include "qt_vmmanager_details_section.hpp"
 #include "qt_vmmanager_detailsection.hpp"
 
+#include "qt_defs.hpp"
+
 #ifdef Q_OS_WINDOWS
 #    include <windows.h>
 #endif
@@ -101,7 +103,7 @@ VMManagerSystem::VMManagerSystem(const QString &sysconfig_file)
     find86BoxBinary();
     platform = QApplication::platformName();
     process  = new QProcess();
-    connect(process, &QProcess::stateChanged, this, &VMManagerSystem::processStatusChanged);
+    connect(process, &QProcess::CHECK_STATE_CHANGED, this, &VMManagerSystem::processStatusChanged);
 
     // Server type for this instance (Standard should always be used instead of Legacy)
     socket_server_type = VMManagerServerSocket::ServerType::Standard;