[Gui] C++ preparation for deprecation of QCheckBox…

…stateChanged -> checkStateChanged

src/Mod/Material/Gui/MaterialSave.cpp

@@ -66,8 +66,11 @@ MaterialSave::MaterialSave(const std::shared_ptr<Materials::Material>& material,
     _filename = QString(ui->editFilename->text());  // No filename by default
 
     ui->checkDerived->setChecked(_saveInherited);
+#if QT_VERSION >= QT_VERSION_CHECK(6,7,0)
+    connect(ui->checkDerived, &QCheckBox::checkStateChanged, this, &MaterialSave::onInherited);
+#else
     connect(ui->checkDerived, &QCheckBox::stateChanged, this, &MaterialSave::onInherited);
-
+#endif
     connect(ui->standardButtons->button(QDialogButtonBox::Ok),
             &QPushButton::clicked,
             this,