2 files changed, 11 insertions, 0 deletions
diff --git a/desktop-widgets/listfilter.ui b/desktop-widgets/listfilter.ui
index 48d813d21..b1d717bf0 100644
--- a/desktop-widgets/listfilter.ui
+++ b/desktop-widgets/listfilter.ui
@@ -51,6 +51,16 @@
        </property>
       </widget>
      </item>
+     <item>
+      <widget class="QToolButton" name="notButton">
+       <property name="text">
+        <string>¬</string>
+       </property>
+       <property name="checkable">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
     </layout>
    </item>
    <item>
diff --git a/desktop-widgets/simplewidgets.cpp b/desktop-widgets/simplewidgets.cpp
index b63349819..f8cd96943 100644
--- a/desktop-widgets/simplewidgets.cpp
+++ b/desktop-widgets/simplewidgets.cpp
@@ -516,6 +516,7 @@ FilterBase::FilterBase(FilterModelBase *model_, QWidget *parent) : QWidget(paren
 	filter->setSourceModel(model);
 	filter->setFilterCaseSensitivity(Qt::CaseInsensitive);
 	connect(ui.filterInternalList, SIGNAL(textChanged(QString)), filter, SLOT(setFilterFixedString(QString)));
+	connect(ui.notButton, &QToolButton::toggled, model, &FilterModelBase::setNegate);
 	ui.filterList->setModel(filter);
 
 	addContextMenuEntry(tr("Select All"), &FilterModelBase::selectAll);