diff --git a/CMakeLists.txt b/CMakeLists.txt
index f607efe..19e5d0b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,7 +6,7 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules/")
 
 SET(CUBICSDR_VERSION_MAJOR "0")
 SET(CUBICSDR_VERSION_MINOR "1")
-SET(CUBICSDR_VERSION_PATCH "28")
+SET(CUBICSDR_VERSION_PATCH "29")
 SET(CUBICSDR_VERSION_REL "alpha")
 SET(CUBICSDR_VERSION "${CUBICSDR_VERSION_MAJOR}.${CUBICSDR_VERSION_MINOR}.${CUBICSDR_VERSION_PATCH}-${CUBICSDR_VERSION_REL}")
 
diff --git a/src/AppFrame.cpp b/src/AppFrame.cpp
index 4995d41..84200e7 100644
--- a/src/AppFrame.cpp
+++ b/src/AppFrame.cpp
@@ -1490,6 +1490,12 @@ void AppFrame::OnIdle(wxIdleEvent& event) {
     }
 #endif
     
+#ifdef _WIN32
+    if (scopeCanvas->HasFocus()) {
+        waterfallCanvas->SetFocus();
+    }
+#endif
+    
     if (!this->IsActive()) {
         std::this_thread::sleep_for(std::chrono::milliseconds(30));
     } else {
@@ -1779,6 +1785,11 @@ void AppFrame::refreshGainUI() {
     gainCanvas->Refresh();
 }
 
+#ifdef _WIN32
+bool AppFrame::canFocus() {
+	return (!wxGetApp().isDeviceSelectorOpen() && (!modemProps || !modemProps->isMouseInView()));
+}
+#endif
 
 FrequencyDialog::FrequencyDialogTarget AppFrame::getFrequencyDialogTarget() {
     FrequencyDialog::FrequencyDialogTarget target = FrequencyDialog::FrequencyDialogTarget::FDIALOG_TARGET_DEFAULT;
diff --git a/src/AppFrame.h b/src/AppFrame.h
index 6abd443..8679c9a 100644
--- a/src/AppFrame.h
+++ b/src/AppFrame.h
@@ -95,7 +95,11 @@ public:
     
     FrequencyDialog::FrequencyDialogTarget getFrequencyDialogTarget();
     void refreshGainUI();
-        
+
+#ifdef _WIN32
+	bool canFocus();
+#endif
+    
 private:
     void OnMenu(wxCommandEvent& event);
     void OnClose(wxCloseEvent& event);
diff --git a/src/visual/GainCanvas.cpp b/src/visual/GainCanvas.cpp
index e72aa66..cb1dce6 100644
--- a/src/visual/GainCanvas.cpp
+++ b/src/visual/GainCanvas.cpp
@@ -22,6 +22,7 @@ EVT_LEFT_DOWN(GainCanvas::OnMouseDown)
 EVT_LEFT_UP(GainCanvas::OnMouseReleased)
 EVT_LEAVE_WINDOW(GainCanvas::OnMouseLeftWindow)
 EVT_ENTER_WINDOW(GainCanvas::OnMouseEnterWindow)
+EVT_MOUSEWHEEL(GainCanvas::OnMouseWheelMoved)
 wxEND_EVENT_TABLE()
 
 GainCanvas::GainCanvas(wxWindow *parent, int *dispAttrs) :
@@ -151,12 +152,31 @@ void GainCanvas::OnMouseDown(wxMouseEvent& event) {
 
 void GainCanvas::OnMouseWheelMoved(wxMouseEvent& event) {
     InteractiveCanvas::OnMouseWheelMoved(event);
-//    Refresh();
+    
+    CubicVR::vec2 hitResult;
+    int panelHit = GetPanelHit(hitResult);
+
+    if (panelHit >= 0) {
+        float movement = 3.0 * (float)event.GetWheelRotation();
+        
+        GainInfo *gInfo;
+        
+        gInfo = gainInfo[panelHit];
+        
+        gInfo->current = gInfo->current + ((movement / 100.0) * ((gInfo->high - gInfo->low) / 100.0));
+        gInfo->changed = true;
+        
+        float levelVal = float(gInfo->current-gInfo->low)/float(gInfo->high-gInfo->low);
+        gInfo->levelPanel.setSize(1.0, levelVal);
+        gInfo->levelPanel.setPosition(0.0, levelVal-1.0);
+
+        gInfo->valuePanel.setText(std::to_string(int(gInfo->current)));
+    }
+
 }
 
 void GainCanvas::OnMouseReleased(wxMouseEvent& event) {
     InteractiveCanvas::OnMouseReleased(event);
-//    Refresh();
 }
 
 void GainCanvas::OnMouseLeftWindow(wxMouseEvent& event) {
@@ -174,7 +194,11 @@ void GainCanvas::OnMouseLeftWindow(wxMouseEvent& event) {
 void GainCanvas::OnMouseEnterWindow(wxMouseEvent& event) {
     InteractiveCanvas::mouseTracker.OnMouseEnterWindow(event);
     SetCursor(wxCURSOR_CROSS);
-//    Refresh();
+#ifdef _WIN32
+	if (wxGetApp().getAppFrame()->canFocus()) {
+		this->SetFocus();
+	}
+#endif
 }
 
 
diff --git a/src/visual/MeterCanvas.cpp b/src/visual/MeterCanvas.cpp
index 0d6b90f..d92c571 100644
--- a/src/visual/MeterCanvas.cpp
+++ b/src/visual/MeterCanvas.cpp
@@ -126,31 +126,45 @@ void MeterCanvas::OnMouseDown(wxMouseEvent& event) {
     InteractiveCanvas::OnMouseDown(event);
     userInputValue = mouseTracker.getMouseY() * (level_max-level_min) + level_min;
     mouseTracker.setHorizDragLock(true);
-    Refresh();
 }
 
 void MeterCanvas::OnMouseReleased(wxMouseEvent& event) {
     InteractiveCanvas::OnMouseReleased(event);
     userInputValue = mouseTracker.getMouseY() * (level_max-level_min) + level_min;
-    Refresh();
 }
 
 void MeterCanvas::OnMouseRightDown(wxMouseEvent& event) {
     InteractiveCanvas::OnMouseRightDown(event);
-    Refresh();
 }
 
 void MeterCanvas::OnMouseRightReleased(wxMouseEvent& event) {
     InteractiveCanvas::OnMouseRightReleased(event);
-    userInputValue = level - level * 0.02;
-    Refresh();
+	if (showUserInput) {
+		userInputValue = level - level * 0.02;
+	}
 }
 
 void MeterCanvas::OnMouseWheelMoved(wxMouseEvent& event) {
     InteractiveCanvas::OnMouseWheelMoved(event);
-	float movement = (float)event.GetWheelRotation() / (float)event.GetLinesPerAction();
-    userInputValue = userInputValue + movement / 1000;
-    Refresh();
+    float movement = 3.0 * (float)event.GetWheelRotation();
+
+	float currentValue = 0;
+	if (showUserInput) {
+		currentValue = userInputValue;
+	} else {
+		currentValue = level;
+	}
+
+    currentValue = currentValue + ((movement / 100.0) * ((level_max - level_min) / 100.0));
+  
+	if (currentValue > level_max) {
+		currentValue = level_max;
+	}
+	if (currentValue < level_min) {
+		currentValue = level_min;
+	}
+
+	userInputValue = currentValue;
 }
 
 void MeterCanvas::OnMouseLeftWindow(wxMouseEvent& event) {
@@ -162,8 +176,11 @@ void MeterCanvas::OnMouseLeftWindow(wxMouseEvent& event) {
 void MeterCanvas::OnMouseEnterWindow(wxMouseEvent& event) {
     InteractiveCanvas::mouseTracker.OnMouseEnterWindow(event);
     SetCursor(wxCURSOR_CROSS);
-    Refresh();
-	this->SetFocus();
+#ifdef _WIN32
+	if (wxGetApp().getAppFrame()->canFocus()) {
+		this->SetFocus();
+	}
+#endif
 }
 
 void MeterCanvas::setHelpTip(std::string tip) {
diff --git a/src/visual/SpectrumCanvas.cpp b/src/visual/SpectrumCanvas.cpp
index c8b96f5..faad1cb 100644
--- a/src/visual/SpectrumCanvas.cpp
+++ b/src/visual/SpectrumCanvas.cpp
@@ -248,6 +248,9 @@ void SpectrumCanvas::OnMouseDown(wxMouseEvent& event) {
 
 void SpectrumCanvas::OnMouseWheelMoved(wxMouseEvent& event) {
     InteractiveCanvas::OnMouseWheelMoved(event);
+    if (waterfallCanvas) {
+        waterfallCanvas->OnMouseWheelMoved(event);
+    }
 }
 
 void SpectrumCanvas::OnMouseReleased(wxMouseEvent& event) {
@@ -259,9 +262,11 @@ void SpectrumCanvas::OnMouseReleased(wxMouseEvent& event) {
 void SpectrumCanvas::OnMouseEnterWindow(wxMouseEvent& event) {
     InteractiveCanvas::OnMouseEnterWindow(event);
     SetCursor(wxCURSOR_SIZEWE);
-	if (waterfallCanvas) {
-		waterfallCanvas->SetFocus();
-	}
+#ifdef _WIN32
+    if (wxGetApp().getAppFrame()->canFocus()) {
+        this->SetFocus();
+    }
+#endif
 }
 
 void SpectrumCanvas::OnMouseLeftWindow(wxMouseEvent& event) {
diff --git a/src/visual/TuningCanvas.cpp b/src/visual/TuningCanvas.cpp
index e333566..4302cf5 100644
--- a/src/visual/TuningCanvas.cpp
+++ b/src/visual/TuningCanvas.cpp
@@ -410,7 +410,11 @@ void TuningCanvas::OnMouseEnterWindow(wxMouseEvent& event) {
     hoverIndex = 0;
     hoverState = TUNING_HOVER_NONE;
     lastPPM = currentPPM = wxGetApp().getPPM();
-	this->SetFocus();
+#ifdef _WIN32
+	if (wxGetApp().getAppFrame()->canFocus()) {
+		this->SetFocus();
+	}
+#endif
 }
 
 void TuningCanvas::setHelpTip(std::string tip) {
diff --git a/src/visual/WaterfallCanvas.cpp b/src/visual/WaterfallCanvas.cpp
index 9a21038..740efab 100644
--- a/src/visual/WaterfallCanvas.cpp
+++ b/src/visual/WaterfallCanvas.cpp
@@ -852,7 +852,11 @@ void WaterfallCanvas::OnMouseLeftWindow(wxMouseEvent& event) {
 void WaterfallCanvas::OnMouseEnterWindow(wxMouseEvent& event) {
     InteractiveCanvas::OnMouseEnterWindow(event);
     SetCursor(wxCURSOR_CROSS);
-	this->SetFocus();
+#ifdef _WIN32
+	if (wxGetApp().getAppFrame()->canFocus()) {
+		this->SetFocus();
+	}
+#endif
 }
 
 void WaterfallCanvas::OnMouseRightDown(wxMouseEvent& event) {
diff --git a/src/visual/WaterfallCanvas.h b/src/visual/WaterfallCanvas.h
index 038e699..aa53448 100644
--- a/src/visual/WaterfallCanvas.h
+++ b/src/visual/WaterfallCanvas.h
@@ -35,7 +35,8 @@ public:
 
     void OnKeyDown(wxKeyEvent& event);
     void OnKeyUp(wxKeyEvent& event);
-
+    void OnMouseWheelMoved(wxMouseEvent& event);
+    
 private:
     void OnPaint(wxPaintEvent& event);
     void OnIdle(wxIdleEvent &event);
@@ -43,7 +44,6 @@ private:
     void updateHoverState();
     
     void OnMouseMoved(wxMouseEvent& event);
-    void OnMouseWheelMoved(wxMouseEvent& event);
     void OnMouseDown(wxMouseEvent& event);
     void OnMouseReleased(wxMouseEvent& event);
     void OnMouseRightDown(wxMouseEvent& event);