2 files changed, 15 insertions, 0 deletions
diff --git a/src/gui/setup_visual.cpp b/src/gui/setup_visual.cpp
index cc713effa..1cf35e4f2 100644
--- a/src/gui/setup_visual.cpp
+++ b/src/gui/setup_visual.cpp
@@ -31,6 +31,7 @@
 #include "gui/widgets/layouthelper.h"
 #include "gui/widgets/scrollarea.h"
 #include "gui/widgets/setupitem.h"
+#include "gui/widgets/slider.h"
 
 #include "resources/image.h"
 
@@ -72,3 +73,16 @@ void Setup_Visual::apply()
     Image::setEnableAlpha(config.getFloatValue("guialpha") != 1.0f);
     Client::applyGrabMode();
 }
+
+void Setup_Visual::action(const gcn::ActionEvent &event)
+{
+    if (event.getId() == "guialphaEvent")
+    {
+        Slider *slider = static_cast<Slider*>(event.getSource());
+        if (slider)
+        {
+            config.setValue("guialpha", slider->getValue());
+            Image::setEnableAlpha(config.getFloatValue("guialpha") != 1.0f);
+        }
+    }
+}
diff --git a/src/gui/setup_visual.h b/src/gui/setup_visual.h
index b8715f409..c76002c06 100644
--- a/src/gui/setup_visual.h
+++ b/src/gui/setup_visual.h
@@ -36,6 +36,7 @@ class Setup_Visual : public SetupTabScroll
 
         void apply();
 
+        void action(const gcn::ActionEvent &event A_UNUSED);
 };
 
 #endif