6 files changed, 13 insertions, 11 deletions
diff --git a/src/widgets/util/qcompleter.cpp b/src/widgets/util/qcompleter.cpp
index e41f7e7573..ee0418b5b8 100644
--- a/src/widgets/util/qcompleter.cpp
+++ b/src/widgets/util/qcompleter.cpp
@@ -145,7 +145,9 @@
 
 #include "QtWidgets/qscrollbar.h"
 #include "QtCore/qdir.h"
+#if QT_CONFIG(stringlistmodel)
 #include "QtCore/qstringlistmodel.h"
+#endif
 #if QT_CONFIG(dirmodel)
 #include "QtWidgets/qdirmodel.h"
 #endif
@@ -1504,7 +1506,7 @@ bool QCompleter::eventFilter(QObject *o, QEvent *e)
 
     case QEvent::InputMethod:
     case QEvent::ShortcutOverride:
-        QApplication::sendEvent(d->widget, e);
+        QCoreApplication::sendEvent(d->widget, e);
         break;
 
     default:
diff --git a/src/widgets/util/qcompleter_p.h b/src/widgets/util/qcompleter_p.h
index 21dddf446e..a52e63a6e2 100644
--- a/src/widgets/util/qcompleter_p.h
+++ b/src/widgets/util/qcompleter_p.h
@@ -75,7 +75,7 @@ class QCompleterPrivate : public QObjectPrivate
 public:
     QCompleterPrivate();
     ~QCompleterPrivate() { delete popup; }
-    void init(QAbstractItemModel *model = 0);
+    void init(QAbstractItemModel *model = nullptr);
 
     QPointer<QWidget> widget;
     QCompletionModel *proxy;
diff --git a/src/widgets/util/qflickgesture.cpp b/src/widgets/util/qflickgesture.cpp
index a8b2a00a80..55ec93c7d3 100644
--- a/src/widgets/util/qflickgesture.cpp
+++ b/src/widgets/util/qflickgesture.cpp
@@ -228,7 +228,7 @@ public:
             // we did send a press, so we need to fake a release now
 
             // release all pressed mouse buttons
-            /* Qt::MouseButtons mouseButtons = QApplication::mouseButtons();
+            /* Qt::MouseButtons mouseButtons = QGuiApplication::mouseButtons();
             for (int i = 0; i < 32; ++i) {
                 if (mouseButtons & (1 << i)) {
                     Qt::MouseButton b = static_cast<Qt::MouseButton>(1 << i);
@@ -237,7 +237,7 @@ public:
 
                     qFGDebug() << "QFG: sending a fake mouse release at far-far-away to " << mouseTarget;
                     QMouseEvent re(QEvent::MouseButtonRelease, QPoint(), farFarAway,
-                                   b, mouseButtons, QApplication::keyboardModifiers());
+                                   b, mouseButtons, QGuiApplication::keyboardModifiers());
                     sendMouseEvent(&re);
                 }
             }*/
@@ -246,8 +246,8 @@ public:
 
             qFGDebug() << "QFG: sending a fake mouse release at far-far-away to " << mouseTarget;
             QMouseEvent re(QEvent::MouseButtonRelease, QPoint(), farFarAway, farFarAway,
-                           mouseButton, QApplication::mouseButtons() & ~mouseButton,
-                           QApplication::keyboardModifiers(), mouseEventSource);
+                           mouseButton, QGuiApplication::mouseButtons() & ~mouseButton,
+                           QGuiApplication::keyboardModifiers(), mouseEventSource);
             sendMouseEvent(&re, RegrabMouseAfterwards);
             // don't clear the mouseTarget just yet, since we need to explicitly ungrab the mouse on release!
         }
diff --git a/src/widgets/util/qflickgesture_p.h b/src/widgets/util/qflickgesture_p.h
index d5ace887ae..0b47516047 100644
--- a/src/widgets/util/qflickgesture_p.h
+++ b/src/widgets/util/qflickgesture_p.h
@@ -71,7 +71,7 @@ class Q_WIDGETS_EXPORT QFlickGesture : public QGesture
     Q_DECLARE_PRIVATE(QFlickGesture)
 
 public:
-    QFlickGesture(QObject *receiver, Qt::MouseButton button, QObject *parent = 0);
+    QFlickGesture(QObject *receiver, Qt::MouseButton button, QObject *parent = nullptr);
     ~QFlickGesture();
 
     friend class QFlickGestureRecognizer;
diff --git a/src/widgets/util/qsystemtrayicon_x11.cpp b/src/widgets/util/qsystemtrayicon_x11.cpp
index 70e5f3678e..0c7bb94a91 100644
--- a/src/widgets/util/qsystemtrayicon_x11.cpp
+++ b/src/widgets/util/qsystemtrayicon_x11.cpp
@@ -151,11 +151,11 @@ bool QSystemTrayIconSys::event(QEvent *e)
 {
     switch (e->type()) {
     case QEvent::ToolTip:
-        QApplication::sendEvent(q, e);
+        QCoreApplication::sendEvent(q, e);
         break;
 #if QT_CONFIG(wheelevent)
     case QEvent::Wheel:
-        return QApplication::sendEvent(q, e);
+        return QCoreApplication::sendEvent(q, e);
 #endif
     default:
         break;
diff --git a/src/widgets/util/qundostack_p.h b/src/widgets/util/qundostack_p.h
index 04bc381114..05c9e0d27e 100644
--- a/src/widgets/util/qundostack_p.h
+++ b/src/widgets/util/qundostack_p.h
@@ -80,7 +80,7 @@ class QUndoStackPrivate : public QObjectPrivate
 {
     Q_DECLARE_PUBLIC(QUndoStack)
 public:
-    QUndoStackPrivate() : index(0), clean_index(0), group(0), undo_limit(0) {}
+    QUndoStackPrivate() : index(0), clean_index(0), group(nullptr), undo_limit(0) {}
 
     QList<QUndoCommand*> command_list;
     QList<QUndoCommand*> macro_stack;
@@ -98,7 +98,7 @@ class QUndoAction : public QAction
 {
     Q_OBJECT
 public:
-    explicit QUndoAction(const QString &prefix, QObject *parent = 0);
+    explicit QUndoAction(const QString &prefix, QObject *parent = nullptr);
     void setTextFormat(const QString &textFormat, const QString &defaultText);
 public Q_SLOTS:
     void setPrefixedText(const QString &text);