debugged\nadded return key action

mainwindow.h

@@ -1,6 +1,7 @@
 #ifndef MAINWINDOW_H
 #define MAINWINDOW_H
 
+#include "tools.h"
 #include <QMainWindow>
 #include <string>
 #include <QTreeWidgetItem>
@@ -81,11 +82,11 @@ class MainWindow : public QMainWindow
 
         void on_portEdit_returnPressed();
 
-        void on_actionDownload_triggered();
+        //void on_actionDownload_triggered();
 
-        void on_listWidget_clicked(const QModelIndex &index);
+        void on_listWidget_clicked();
 
-        void on_treeWidget_itemDoubleClicked(QTreeWidgetItem *item, int column);
+        void on_treeWidget_itemDoubleClicked(QTreeWidgetItem *item);
 
         void downloadFinished();
 
@@ -97,10 +98,14 @@ class MainWindow : public QMainWindow
 
         void on_actionAbout_Qt_triggered();
 
-        void on_khistorycombobox_currentIndexChanged(int i);
+        void on_khistorycombobox_currentIndexChanged(int);
 
         void on_DefaultSaveFolder_triggered();
 
+        void returnPressed();
+
+        void on_connectButton_clicked();
+
 signals:
         void stopDownloading(int);