update

src/FluFrameless.cpp

@@ -3,6 +3,7 @@
 #include <QQuickWindow>
 #include <QGuiApplication>
 #include <QScreen>
+#include <QDateTime>
 
 #ifdef Q_OS_WIN
 #pragma comment (lib,"user32.lib")
@@ -62,9 +63,6 @@ void FluFrameless::componentComplete(){
     }
     window()->installEventFilter(this);
     qApp->installNativeEventFilter(this);
-    if(_appbar){
-        _appbar->installEventFilter(this);
-    }
     if(_maximizeButton){
         setHitTestVisible(_maximizeButton);
     }
@@ -425,9 +423,20 @@ bool FluFrameless::eventFilter(QObject *obj, QEvent *ev){
             }
         }else{
             if(_hitAppBar()){
+                qint64 clickTimer = QDateTime::currentMSecsSinceEpoch();
+                qint64 offset =  clickTimer - this->_clickTimer;
+                this->_clickTimer = clickTimer;
+                if(offset<300){
+                    if(_isMaximized()){
+                        showNormal();
+                    }else{
+                        showMaximized();
+                    }
+                }else{
                     window()->startSystemMove();
                 }
             }
+        }
         break;
     case QEvent::MouseButtonRelease:
         _edges = 0;

src/FluFrameless.h

@@ -54,6 +54,7 @@ private:
     qint64 _current;
     int _edges = 0;
     int _margins = 8;
+    qint64 _clickTimer = 0;
     QList<QPointer<QQuickItem>> _hitTestList;
 };