[ADD] shortcuts for removing ROIs and modules can now be configured through

the walnut.cfg. Defaults are "Del" and "Backspace" even if no configuration is given.

Note that the keys can not be equal by now (or at least is seems so) because
Qt otherwise complains about doubly mapped keys

doc/user/walnut.cfg.devel

@@ -55,6 +55,14 @@ compatiblesToolBarPos = 0 # position of the compatibles toolbar (overrides toolB
 # dsbInvisibleByDefault = yes # hide the control panel on startup. Can be shown using F9.
 # dsbFloatingByDefault = yes  # should the control panel be undocked on startup?
 
+# Here you can put any key sequence you would like to result in removing modules or ROIs
+# Examples: 
+# deleteKey = Backspace
+# deleteKey = Ctrl+J
+# deleteKey = B
+deleteModuleKey = Backspace
+deleteROIKey = Del
+
 ####################################################################
 # Other GUI settings
 

doc/user/walnut.cfg.mpi

@@ -58,6 +58,14 @@ compatiblesToolBarPos = 0 # position of the compatibles toolbar (overrides toolB
 # dsbInvisibleByDefault = yes # hide the control panel on startup. Can be shown using F9.
 # dsbFloatingByDefault = yes  # should the control panel be undocked on startup?
 
+# Here you can put any key sequence you would like to result in removing modules or ROIs
+# Examples: 
+# deleteKey = Backspace
+# deleteKey = Ctrl+J
+# deleteKey = B
+deleteModuleKey = Backspace
+deleteROIKey = Del
+
 ####################################################################
 # Other GUI settings
 

src/gui/qt4/controlPanel/WQtControlPanel.cpp

@@ -91,7 +91,17 @@ WQtControlPanel::WQtControlPanel( WMainWindow* parent )
     m_moduleTreeWidget->addAction( separator );
 
     m_deleteModuleAction = new QAction( WQt4Gui::getMainWindow()->getIconManager()->getIcon( "remove" ), "Remove Module", m_moduleTreeWidget );
-    m_deleteModuleAction->setShortcut( QKeySequence( Qt::Key_Backspace ) );
+
+    {
+        // Set the key for removing modules
+        std::string deleteKey = "";
+        WPreferences::getPreference( "qt4gui.deleteModuleKey", &deleteKey );
+        if( deleteKey == "" )
+        {
+            deleteKey = "Backspace";
+        }
+        m_deleteModuleAction->setShortcut( QKeySequence( QString::fromStdString( deleteKey ) ) );
+    }
     connect( m_deleteModuleAction, SIGNAL( triggered() ), this, SLOT( deleteModuleTreeItem() ) );
     m_moduleTreeWidget->addAction( m_deleteModuleAction );
 
@@ -147,8 +157,17 @@ WQtControlPanel::WQtControlPanel( WMainWindow* parent )
 
     connectSlots();
 
-    QShortcut* shortcut = new QShortcut( QKeySequence( Qt::Key_Delete ), m_roiTreeWidget );
-    connect( shortcut, SIGNAL( activated() ), this, SLOT( deleteROITreeItem() ) );
+    {
+        // Set the key for removing ROIs and connect the event
+        std::string deleteKey = "";
+        WPreferences::getPreference( "qt4gui.deleteROIKey", &deleteKey );
+        if( deleteKey == "" )
+        {
+            deleteKey = "Delete";
+        }
+        QShortcut* shortcut = new QShortcut( QKeySequence( QString::fromStdString( deleteKey ) ), m_roiTreeWidget );
+        connect( shortcut, SIGNAL( activated() ), this, SLOT( deleteROITreeItem() ) );
+    }
 }
 
 WQtControlPanel::~WQtControlPanel()