Implemented CWindow::Update() method

This method will allow the clearing of the background of the window,
when the client has no draw() method defined, or when that method does
not do anything.

StdWindow.cpp

@@ -3189,6 +3189,35 @@ TBool CWindow::ShiftPressed()
 	return(m_bShiftPressed);
 }
 
+/**
+ * Triggers an update of the window.
+ * This method is for use when clearing the background of the window is desired. Usually, it is not required to
+ * manually call this method, as The Framework will take care of such things as redrawing the window when needed.
+ * However, in certain circumstances, such as when the client has no draw() method, or when that method does not
+ * do anything, it may be necessary to call this method to clear the background of the window.
+ *
+ * @pre		The window has been created with open()
+ *
+ * @date	Wednesday 29-Jan-2025 5:59 am, Code HQ Tokyo Tsukuda
+ */
+
+void CWindow::Update()
+{
+
+#ifdef __amigaos__
+
+#elif defined(QT_GUI_LIB)
+
+	GetRootWindow()->m_poWindow->update();
+
+#else /* ! QT_GUI_LIB */
+
+	ASSERTM(RedrawWindow(m_poWindow, NULL, NULL, RDW_ERASE | RDW_INVALIDATE), "CWindow::Update() => Unable to update window");
+
+#endif /* ! QT_GUI_LIB */
+
+}
+
 /**
  * Modifies a menu item in a dropdown menu.
  * This function updates an already existing menu item in a dropdown menu.  The dropdown menu

StdWindow.h

@@ -270,6 +270,8 @@ class CWindow
 
 	void ShowCursor(bool a_bShow);
 
+	void Update();
+
 	void UpdateMenuItem(const char *a_pccLabel, const char *a_pccHotKey, TInt a_iOrdinal, TInt a_iCommand);
 
 	/* Accessor functions */