diff --git a/DSView/pv/mainframe.cpp b/DSView/pv/mainframe.cpp
index c972e7c6..f9e91588 100644
--- a/DSView/pv/mainframe.cpp
+++ b/DSView/pv/mainframe.cpp
@@ -759,16 +759,7 @@ void MainFrame::AttachNativeWindow()
     _titleBar->EnableAbleDrag(false);
   
     setWindowFlags(Qt::FramelessWindowHint);
-
-    if (nativeWindow->IsWin7()){
-        SetWindowLong((HWND)winId(), GWL_STYLE, WS_CLIPCHILDREN | WS_CLIPSIBLINGS);   
-    }
-    else{
-        SetWindowLong((HWND)winId(), GWL_STYLE, WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS);   
-    }    
-
-    SetWindowLong((HWND)winId(), GWL_STYLE, WS_CLIPCHILDREN | WS_CLIPSIBLINGS);   
-    
+    SetWindowLong((HWND)winId(), GWL_STYLE, WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS);    
     SetParent((HWND)winId(), nativeWindow->Handle());
 
     setVisible(true);
diff --git a/DSView/pv/winnativewidget.cpp b/DSView/pv/winnativewidget.cpp
index 160bc597..3a551267 100644
--- a/DSView/pv/winnativewidget.cpp
+++ b/DSView/pv/winnativewidget.cpp
@@ -65,11 +65,13 @@ WinNativeWidget::WinNativeWidget(const int x, const int y, const int width,
     _hWnd = NULL;
     _event_callback = NULL;
     _is_lose_foreground = false;
-   
-    _titleBarWidget = NULL;
-    _is_native_border = IsWin11OrGreater();
     _hCurrentMonitor = NULL;
     _shadow = NULL; 
+    _titleBarWidget = NULL;
+
+    _is_native_border = IsWin11OrGreater();
+    _is_win7 = IsWin7();
+
     _border_color = QColor(0x80,0x80,0x80);
     int r = backColor.red();
     int g = backColor.green();
@@ -77,7 +79,6 @@ WinNativeWidget::WinNativeWidget(const int x, const int y, const int width,
 
     HINSTANCE hInstance = GetModuleHandle(nullptr);
     WNDCLASSEX wcx;
-
     memset(&wcx, 0, sizeof(WNDCLASSEXW));
 
     wcx.cbSize = sizeof(WNDCLASSEX);
@@ -365,6 +366,13 @@ LRESULT CALLBACK WinNativeWidget::WndProc(HWND hWnd, UINT message, WPARAM wParam
             }
             break;           
         }
+        case WM_MOUSEWHEEL:
+        {
+            if (self->_is_win7 && self->_childWindow != NULL){
+                return SendMessage(self->_childWindow, message, wParam, lParam);
+            }
+            break;
+        }
     }
 
     return DefWindowProc(hWnd, message, wParam, lParam);
diff --git a/DSView/pv/winnativewidget.h b/DSView/pv/winnativewidget.h
index 99e8d67a..dcc63224 100644
--- a/DSView/pv/winnativewidget.h
+++ b/DSView/pv/winnativewidget.h
@@ -85,8 +85,8 @@ public:
     bool isActiveWindow();
 
     void SetBorderColor(QColor color);
-    bool IsWin11OrGreater();
-    bool IsWin7();
+    static bool IsWin11OrGreater();
+    static bool IsWin7();
 
     inline void SetTitleBarWidget(QWidget *w){
         _titleBarWidget = w;
@@ -126,6 +126,7 @@ private:
     WinShadow   *_shadow;
     QColor      _border_color;
     bool        _is_lose_foreground;
+    bool        _is_win7;
 };
 
 }