diff --git a/dgl/src/Cairo.cpp b/dgl/src/Cairo.cpp
index a298335f..f92e3bd2 100644
--- a/dgl/src/Cairo.cpp
+++ b/dgl/src/Cairo.cpp
@@ -757,6 +757,9 @@ void SubWidget::PrivateData::display(const uint width, const uint height, const
 
 void TopLevelWidget::PrivateData::display()
 {
+    if (! selfw->pData->visible)
+        return;
+
     const Size<uint> size(window.getSize());
     const uint width  = size.getWidth();
     const uint height = size.getHeight();
diff --git a/dgl/src/OpenGL.cpp b/dgl/src/OpenGL.cpp
index 925b5abc..ad179532 100644
--- a/dgl/src/OpenGL.cpp
+++ b/dgl/src/OpenGL.cpp
@@ -611,6 +611,9 @@ void SubWidget::PrivateData::display(const uint width, const uint height, const
 
 void TopLevelWidget::PrivateData::display()
 {
+    if (! selfw->pData->visible)
+        return;
+
     const Size<uint> size(window.getSize());
     const uint width  = size.getWidth();
     const uint height = size.getHeight();
diff --git a/dgl/src/TopLevelWidgetPrivateData.cpp b/dgl/src/TopLevelWidgetPrivateData.cpp
index 540d0149..5adbca95 100644
--- a/dgl/src/TopLevelWidgetPrivateData.cpp
+++ b/dgl/src/TopLevelWidgetPrivateData.cpp
@@ -39,6 +39,10 @@ TopLevelWidget::PrivateData::~PrivateData()
 
 bool TopLevelWidget::PrivateData::keyboardEvent(const KeyboardEvent& ev)
 {
+    // ignore event if we are not visible
+    if (! selfw->pData->visible)
+        return false;
+
     // give top-level widget chance to catch this event first
     if (self->onKeyboard(ev))
         return true;
@@ -49,6 +53,10 @@ bool TopLevelWidget::PrivateData::keyboardEvent(const KeyboardEvent& ev)
 
 bool TopLevelWidget::PrivateData::specialEvent(const SpecialEvent& ev)
 {
+    // ignore event if we are not visible
+    if (! selfw->pData->visible)
+        return false;
+
     // give top-level widget chance to catch this event first
     if (self->onSpecial(ev))
         return true;
@@ -59,6 +67,10 @@ bool TopLevelWidget::PrivateData::specialEvent(const SpecialEvent& ev)
 
 bool TopLevelWidget::PrivateData::characterInputEvent(const CharacterInputEvent& ev)
 {
+    // ignore event if we are not visible
+    if (! selfw->pData->visible)
+        return false;
+
     // give top-level widget chance to catch this event first
     if (self->onCharacterInput(ev))
         return true;
@@ -69,6 +81,10 @@ bool TopLevelWidget::PrivateData::characterInputEvent(const CharacterInputEvent&
 
 bool TopLevelWidget::PrivateData::mouseEvent(const MouseEvent& ev)
 {
+    // ignore event if we are not visible
+    if (! selfw->pData->visible)
+        return false;
+
     MouseEvent rev = ev;
 
     if (window.pData->autoScaling)
@@ -89,6 +105,10 @@ bool TopLevelWidget::PrivateData::mouseEvent(const MouseEvent& ev)
 
 bool TopLevelWidget::PrivateData::motionEvent(const MotionEvent& ev)
 {
+    // ignore event if we are not visible
+    if (! selfw->pData->visible)
+        return false;
+
     MotionEvent rev = ev;
 
     if (window.pData->autoScaling)
@@ -109,6 +129,10 @@ bool TopLevelWidget::PrivateData::motionEvent(const MotionEvent& ev)
 
 bool TopLevelWidget::PrivateData::scrollEvent(const ScrollEvent& ev)
 {
+    // ignore event if we are not visible
+    if (! selfw->pData->visible)
+        return false;
+
     ScrollEvent rev = ev;
 
     if (window.pData->autoScaling)
diff --git a/dgl/src/Vulkan.cpp b/dgl/src/Vulkan.cpp
index 7ec5db67..5f15d4b2 100644
--- a/dgl/src/Vulkan.cpp
+++ b/dgl/src/Vulkan.cpp
@@ -211,20 +211,16 @@ void SubWidget::PrivateData::display(const uint width, const uint height, const
 
 void TopLevelWidget::PrivateData::display()
 {
+    if (! selfw->pData->visible)
+        return;
+
     const Size<uint> size(window.getSize());
     const uint width  = size.getWidth();
     const uint height = size.getHeight();
 
     const double autoScaleFactor = window.pData->autoScaleFactor;
 
-    // FIXME anything needed here?
-#if 0
-    // full viewport size
-    if (window.pData->autoScaling)
-        glViewport(0, -(height * autoScaleFactor - height), width * autoScaleFactor, height * autoScaleFactor);
-    else
-        glViewport(0, 0, width, height);
-#endif
+    // TODO
 
     // main widget drawing
     self->onDisplay();