basic function with QtMultimedia stuff...

mainwindow.h

@@ -6,6 +6,7 @@
 QT_BEGIN_NAMESPACE
 namespace Ui { class MainWindow; }
 
+class QMediaPlayer;
 class QPropertyAnimation;
 QT_END_NAMESPACE
 
@@ -24,16 +25,35 @@ protected:
     void mouseMoveEvent(QMouseEvent *event) override;
     void mouseReleaseEvent(QMouseEvent *event) override;
 
+    void loadFile();
+
 private slots:
     void on_closeWindowBtn_clicked();
+    void on_playBtn_clicked();
+    void on_volumeSlider_valueChanged(int value);
+    void on_stopBtn_clicked();
+
+    void on_playbackSlider_valueChanged(int value);
+
+    void on_prevBtn_clicked();
+
+    void on_nextBtn_clicked();
+
+    void on_volumeBtn_clicked();
+
+    void on_minimumWindowBtn_clicked();
 
 private:
     QPoint m_oldMousePos;
     bool m_clickedOnWindow = false;
+    bool m_playbackSliderPressed = false;
     QLinearGradient m_bgLinearGradient;
 
     Ui::MainWindow *ui;
 
+    QMediaPlayer *m_mediaPlayer;
     QPropertyAnimation *m_fadeOutAnimation;
+
+    static QString ms2str(qint64 ms);
 };
 #endif // MAINWINDOW_H