add: Mouse wheel top window.

src/EterPythonLib/PythonWindowManager.cpp

@@ -28,6 +28,9 @@ namespace UI
 		m_pMiddleCaptureWindow(NULL),
 		m_pRightCaptureWindow(NULL),
 		m_pLockWindow(NULL),
+#if defined(__BL_MOUSE_WHEEL_TOP_WINDOW__)
+		m_pTopWindow(NULL),
+#endif
 		m_bAttachingFlag(FALSE),
 		m_dwAttachingType(0),
 		m_dwAttachingIndex(0),
@@ -70,6 +73,9 @@ namespace UI
 
 		delete m_pRootWindow;
 		m_pRootWindow = NULL;
+#if defined(__BL_MOUSE_WHEEL_TOP_WINDOW__)
+		m_pTopWindow = NULL;
+#endif
 	}
 
 	void CWindowManager::Destroy()
@@ -403,6 +409,11 @@ namespace UI
 		if (pWindow == m_pLockWindow)
 			m_pLockWindow = NULL;
 
+#if defined(__BL_MOUSE_WHEEL_TOP_WINDOW__)
+		if (pWindow == m_pTopWindow)
+			m_pTopWindow = NULL;
+#endif
+
 		m_LockWindowList.remove(pWindow);
 		m_ActiveWindowList.remove(pWindow);
 		m_PickAlwaysWindowList.remove(pWindow);
@@ -529,6 +540,34 @@ namespace UI
 		m_iIgnoreEndTime = timeGetTime() + 500;
 	}
 
+#if defined(__BL_MOUSE_WHEEL_TOP_WINDOW__)
+	bool CWindowManager::OnMouseWheelButtonUp()
+	{
+		if (m_pTopWindow)
+			return m_pTopWindow->OnMouseWheelButtonUp();
+
+		return false;
+	}
+	
+	bool CWindowManager::OnMouseWheelButtonDown()
+	{
+		if (m_pTopWindow)
+			return m_pTopWindow->OnMouseWheelButtonDown();
+		
+		return false;
+	}
+
+	void CWindowManager::SetWheelTopWindow(CWindow* pWindow)
+	{
+		m_pTopWindow = pWindow;
+	}
+
+	void CWindowManager::ClearWheelTopWindow()
+	{
+		m_pTopWindow = NULL;
+	}
+#endif
+
 	void CWindowManager::LockWindow(CWindow * pWin)
 	{
 		if (m_pActiveWindow)
@@ -638,6 +677,9 @@ namespace UI
 		{
 			SetTop(pTopWindow);
 		}
+#if defined(__BL_MOUSE_WHEEL_TOP_WINDOW__)
+		m_pTopWindow = pTopWindow;
+#endif
 	}
 
 	CWindow * CWindowManager::GetActivateWindow()