Show error dialog for failed SQL queries

src/core/sqlquery.h

@@ -0,0 +1,48 @@
+/*
+ * Strawberry Music Player
+ * Copyright 2021, Jonas Kvinge <jonas@jkvinge.net>
+ *
+ * Strawberry is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Strawberry is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef SQLQUERY_H
+#define SQLQUERY_H
+
+#include "config.h"
+
+#include <QMap>
+#include <QVariant>
+#include <QString>
+#include <QSqlDatabase>
+#include <QSqlQuery>
+
+class SqlQuery : public QSqlQuery {
+
+ public:
+  explicit SqlQuery(QSqlDatabase db) : QSqlQuery(db) {}
+
+  void BindValue(const QString &placeholder, const QVariant &value);
+  bool Exec();
+  QString LastQuery() const;
+
+ private:
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+  QMap<QString, QVariant> bound_values_;
+#endif
+  QString last_query_;
+
+};
+
+#endif  // SQLQUERY_H