modifying all the files to match the app

src/suyu/applets/qt_error.h

@@ -0,0 +1,34 @@
+// SPDX-FileCopyrightText: Copyright 2019 suyu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <QObject>
+
+#include "core/frontend/applets/error.h"
+
+class GMainWindow;
+
+class QtErrorDisplay final : public QObject, public Core::Frontend::ErrorApplet {
+    Q_OBJECT
+
+public:
+    explicit QtErrorDisplay(GMainWindow& parent);
+    ~QtErrorDisplay() override;
+
+    void Close() const override;
+    void ShowError(Result error, FinishedCallback finished) const override;
+    void ShowErrorWithTimestamp(Result error, std::chrono::seconds time,
+                                FinishedCallback finished) const override;
+    void ShowCustomErrorText(Result error, std::string dialog_text, std::string fullscreen_text,
+                             FinishedCallback finished) const override;
+
+signals:
+    void MainWindowDisplayError(QString error_code, QString error_text) const;
+    void MainWindowRequestExit() const;
+
+private:
+    void MainWindowFinishedError();
+
+    mutable FinishedCallback callback;
+};