diff --git a/example/Vulkan/VulkanAppFramework.h b/example/Vulkan/VulkanAppFramework.h
index da64ac54..e0fe9d4c 100644
--- a/example/Vulkan/VulkanAppFramework.h
+++ b/example/Vulkan/VulkanAppFramework.h
@@ -46,6 +46,7 @@ protected:
     void OnMouseDown(int,int,uint mk){mouse_key=mk;MouseDown(mk);}
     void OnMouseUp  (int,int,uint mk){mouse_key=0;MouseUp(mk);}
     void OnMouseMove(int x,int y){mouse_pos.Set(x,y);MouseMove();}
+    void OnMouseWheel(int v,int h,uint mk){MouseWheel(v,h,mk);}
 
 protected:
 
@@ -117,6 +118,7 @@ public:
         SetEventCall(win->OnMouseDown,  this,VulkanApplicationFramework,OnMouseDown );
         SetEventCall(win->OnMouseUp,    this,VulkanApplicationFramework,OnMouseUp   );
         SetEventCall(win->OnMouseMove,  this,VulkanApplicationFramework,OnMouseMove );
+        SetEventCall(win->OnMouseWheel, this,VulkanApplicationFramework,OnMouseWheel);
 
         return(true);
     }
@@ -126,6 +128,7 @@ public:
     virtual void MouseDown(uint){}
     virtual void MouseUp(uint){}
     virtual void MouseMove(){}
+    virtual void MouseWheel(int,int,uint){}
 
     void InitCommandBuffer()
     {
@@ -314,4 +317,9 @@ public:
 
         mouse_last_pos=mouse_pos;
     }
+
+    virtual void MouseWheel(int v,int h,uint)
+    {
+        camera.Distance(1+(v/1000.0f));
+    }
 };//class WalkerCameraAppFramework
diff --git a/inc/hgl/platform/Window.h b/inc/hgl/platform/Window.h
index c4be79ef..14ec6a4a 100644
--- a/inc/hgl/platform/Window.h
+++ b/inc/hgl/platform/Window.h
@@ -33,7 +33,7 @@ namespace hgl
     public:
 
         virtual void ProcMouseMove      (int x,int y)               {SafeCallEvent(OnMouseMove,     (x,y));}
-        virtual void ProcMouseWheel     (int x,int y, int v,int h)  {SafeCallEvent(OnMouseWheel,    (x,y,v,h));}
+        virtual void ProcMouseWheel     (int v,int h,uint mb)       {SafeCallEvent(OnMouseWheel,    (v,h,mb));}
         virtual void ProcMouseDown      (int x,int y,uint mb)       {SafeCallEvent(OnMouseDown,     (x,y,mb));}
         virtual void ProcMouseUp        (int x,int y,uint mb)       {SafeCallEvent(OnMouseUp,       (x,y,mb));}
         virtual void ProcMouseDblClick  (int x,int y,uint mb)       {SafeCallEvent(OnMouseDblClick, (x,y,mb));}
@@ -61,7 +61,7 @@ namespace hgl
     public:
 
         DefEvent(void,OnMouseMove       ,(int,int));
-        DefEvent(void,OnMouseWheel      ,(int,int, int,int));
+        DefEvent(void,OnMouseWheel      ,(int,int,uint));
         DefEvent(void,OnMouseDown       ,(int,int,uint));
         DefEvent(void,OnMouseUp         ,(int,int,uint));
         DefEvent(void,OnMouseDblClick   ,(int,int,uint));
diff --git a/src/Platform/Win/WinMessage.cpp b/src/Platform/Win/WinMessage.cpp
index 50ccd15c..d277d65c 100644
--- a/src/Platform/Win/WinMessage.cpp
+++ b/src/Platform/Win/WinMessage.cpp
@@ -226,20 +226,18 @@ namespace hgl
         #define WMEF2(name) void name(WinWindow *win,uint32 wParam,uint32 lParam)
             WMEF2(WMProcMouseWheel)
             {
-                const int x=LOWORD(lParam);
-                const int y=HIWORD(lParam);
-
-                win->ProcMouseMove(x,y);
-                win->ProcMouseWheel(x,y,HIWORD(wParam),0);
+                int zDelta=GET_WHEEL_DELTA_WPARAM(wParam);
+                uint key=ConvertOSKey(GET_KEYSTATE_WPARAM(wParam));
+                
+                win->ProcMouseWheel(zDelta,0,key);
             }
 
             WMEF2(WMProcMouseHWheel)
             {
-                const int x=LOWORD(lParam);
-                const int y=HIWORD(lParam);
-
-                win->ProcMouseMove(x,y);
-                win->ProcMouseWheel(x,y,0,HIWORD(wParam));
+                int zDelta=GET_WHEEL_DELTA_WPARAM(wParam);
+                uint key=ConvertOSKey(GET_KEYSTATE_WPARAM(wParam));
+                
+                win->ProcMouseWheel(0,zDelta,key);
             }
 
             WMEF2(WMProcSize)