Make Ctrl+Tab key combo cycle main tabs

Graphs/gGraphView.cpp

@@ -2286,6 +2286,10 @@ void gGraphView::wheelEvent(QWheelEvent * event)
 
 void gGraphView::keyPressEvent(QKeyEvent * event)
 {
+    if (event->key()==Qt::Key_Tab) {
+        event->ignore();
+        return;
+    }
     gGraph *g;
     for (int i=0;i<m_graphs.size();i++) {
         if (m_graphs[i]->group()==0) {

mainwindow.cpp

@@ -529,3 +529,13 @@ void MainWindow::on_action_Link_Graph_Groups_toggled(bool arg1)
     PROFILE["LinkGroups"]=arg1;
     if (daily) daily->RedrawGraphs();
 }
+
+void MainWindow::on_action_CycleTabs_triggered()
+{
+    int i;
+    qDebug() << "Switching Tabs";
+    i=ui->tabWidget->currentIndex()+1;
+    if (i >= ui->tabWidget->count())
+        i=0;
+    ui->tabWidget->setCurrentIndex(i);
+}

mainwindow.h

@@ -102,6 +102,8 @@ private slots:
 
     void on_action_Link_Graph_Groups_toggled(bool arg1);
 
+    void on_action_CycleTabs_triggered();
+
 private:
     Ui::MainWindow *ui;
     Daily * daily;

mainwindow.ui

@@ -657,10 +657,13 @@
     <string>F4</string>
    </property>
   </action>
-  <action name="action_2">
+  <action name="action_CycleTabs">
    <property name="text">
     <string>-</string>
    </property>
+   <property name="shortcut">
+    <string>Ctrl+Tab</string>
+   </property>
   </action>
   <action name="actionUse_AntiAliasing">
    <property name="checkable">