Add argument names to the function signatures in headers

Sometimes, in the .cpp, the declaration has the argument name in comments
because it is not used (instead of using Q_UNUSED). The old qdoc could
parse that, but once clang is used, these comments are not seen anymore.

So add the argument names to the headers. This is also good for things
like auto completion, which uses only the header to know what the
argument name is.

I grepped for " */)" and made sure all the functions that are documented
have the right arguments. I also added the name to all the function around
for consistency.

Change-Id: I1aaa37e25a1985f7f51653f047a1ac2633242b56
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Martin Smith <martin.smith@theqtcompany.com>

src/corelib/kernel/qobject.h

@@ -113,8 +113,8 @@ public:
     Q_INVOKABLE explicit QObject(QObject *parent=Q_NULLPTR);
     virtual ~QObject();
 
-    virtual bool event(QEvent *);
-    virtual bool eventFilter(QObject *, QEvent *);
+    virtual bool event(QEvent *event);
+    virtual bool eventFilter(QObject *watched, QEvent *event);
 
 #ifdef Q_QDOC
     static QString tr(const char *sourceText, const char *comment = Q_NULLPTR, int n = -1);
@@ -189,9 +189,9 @@ public:
 
     inline const QObjectList &children() const { return d_ptr->children; }
 
-    void setParent(QObject *);
-    void installEventFilter(QObject *);
-    void removeEventFilter(QObject *);
+    void setParent(QObject *parent);
+    void installEventFilter(QObject *filterObj);
+    void removeEventFilter(QObject *obj);
 
     static QMetaObject::Connection connect(const QObject *sender, const char *signal,
                         const QObject *receiver, const char *member, Qt::ConnectionType = Qt::AutoConnection);
@@ -430,9 +430,9 @@ protected:
     int receivers(const char* signal) const;
     bool isSignalConnected(const QMetaMethod &signal) const;
 
-    virtual void timerEvent(QTimerEvent *);
-    virtual void childEvent(QChildEvent *);
-    virtual void customEvent(QEvent *);
+    virtual void timerEvent(QTimerEvent *event);
+    virtual void childEvent(QChildEvent *event);
+    virtual void customEvent(QEvent *event);
 
     virtual void connectNotify(const QMetaMethod &signal);
     virtual void disconnectNotify(const QMetaMethod &signal);

src/widgets/kernel/qwidget.h

@@ -605,43 +605,43 @@ Q_SIGNALS:
 
 protected:
     // Event handlers
-    bool event(QEvent *) Q_DECL_OVERRIDE;
-    virtual void mousePressEvent(QMouseEvent *);
-    virtual void mouseReleaseEvent(QMouseEvent *);
-    virtual void mouseDoubleClickEvent(QMouseEvent *);
-    virtual void mouseMoveEvent(QMouseEvent *);
+    bool event(QEvent *event) Q_DECL_OVERRIDE;
+    virtual void mousePressEvent(QMouseEvent *event);
+    virtual void mouseReleaseEvent(QMouseEvent *event);
+    virtual void mouseDoubleClickEvent(QMouseEvent *event);
+    virtual void mouseMoveEvent(QMouseEvent *event);
 #ifndef QT_NO_WHEELEVENT
-    virtual void wheelEvent(QWheelEvent *);
+    virtual void wheelEvent(QWheelEvent *event);
 #endif
-    virtual void keyPressEvent(QKeyEvent *);
-    virtual void keyReleaseEvent(QKeyEvent *);
-    virtual void focusInEvent(QFocusEvent *);
-    virtual void focusOutEvent(QFocusEvent *);
-    virtual void enterEvent(QEvent *);
-    virtual void leaveEvent(QEvent *);
-    virtual void paintEvent(QPaintEvent *);
-    virtual void moveEvent(QMoveEvent *);
-    virtual void resizeEvent(QResizeEvent *);
-    virtual void closeEvent(QCloseEvent *);
+    virtual void keyPressEvent(QKeyEvent *event);
+    virtual void keyReleaseEvent(QKeyEvent *event);
+    virtual void focusInEvent(QFocusEvent *event);
+    virtual void focusOutEvent(QFocusEvent *event);
+    virtual void enterEvent(QEvent *event);
+    virtual void leaveEvent(QEvent *event);
+    virtual void paintEvent(QPaintEvent *event);
+    virtual void moveEvent(QMoveEvent *event);
+    virtual void resizeEvent(QResizeEvent *event);
+    virtual void closeEvent(QCloseEvent *event);
 #ifndef QT_NO_CONTEXTMENU
-    virtual void contextMenuEvent(QContextMenuEvent *);
+    virtual void contextMenuEvent(QContextMenuEvent *event);
 #endif
 #ifndef QT_NO_TABLETEVENT
-    virtual void tabletEvent(QTabletEvent *);
+    virtual void tabletEvent(QTabletEvent *event);
 #endif
 #ifndef QT_NO_ACTION
-    virtual void actionEvent(QActionEvent *);
+    virtual void actionEvent(QActionEvent *event);
 #endif
 
 #ifndef QT_NO_DRAGANDDROP
-    virtual void dragEnterEvent(QDragEnterEvent *);
-    virtual void dragMoveEvent(QDragMoveEvent *);
-    virtual void dragLeaveEvent(QDragLeaveEvent *);
-    virtual void dropEvent(QDropEvent *);
+    virtual void dragEnterEvent(QDragEnterEvent *event);
+    virtual void dragMoveEvent(QDragMoveEvent *event);
+    virtual void dragLeaveEvent(QDragLeaveEvent *event);
+    virtual void dropEvent(QDropEvent *event);
 #endif
 
-    virtual void showEvent(QShowEvent *);
-    virtual void hideEvent(QHideEvent *);
+    virtual void showEvent(QShowEvent *event);
+    virtual void hideEvent(QHideEvent *event);
     virtual bool nativeEvent(const QByteArray &eventType, void *message, long *result);
 
     // Misc. protected functions

src/widgets/styles/qstyle.h

@@ -66,13 +66,13 @@ public:
     QStyle();
     virtual ~QStyle();
 
-    virtual void polish(QWidget *);
-    virtual void unpolish(QWidget *);
+    virtual void polish(QWidget *widget);
+    virtual void unpolish(QWidget *widget);
 
-    virtual void polish(QApplication *);
-    virtual void unpolish(QApplication *);
+    virtual void polish(QApplication *application);
+    virtual void unpolish(QApplication *application);
 
-    virtual void polish(QPalette &);
+    virtual void polish(QPalette &palette);
 
     virtual QRect itemTextRect(const QFontMetrics &fm, const QRect &r,
                            int flags, bool enabled,