--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/foosdk/sdk/libPPUI/windowLifetime.h	Mon Jan 05 02:15:46 2026 -0500
@@ -0,0 +1,44 @@
+#pragma once
+#include "ImplementOnFinalMessage.h"
+#include "win32_op.h"
+#include <functional>
+
+namespace PP {
+	//! Create a new window object - obj_t derived from CWindowImpl<> etc, with automatic lifetime management, \n
+	//! OnFinalMessage() is automatically overridden to delete the window object. \n
+	//! Does NOT create the window itself, it's up to you to call Create() or SubclassWindow() with the returned object.
+	template<typename obj_t, typename ... arg_t>
+	obj_t* newWindowObj(arg_t && ... arg) {
+		return new ImplementOnFinalMessage<obj_t>(std::forward<arg_t>(arg) ...);
+	}
+
+	//! Subclass HWND with window class object obj_t deriving from CWindowImpl<> etc, with automatic lifetime management of the object, \n
+	//! OnFinalMessage() is automatically overridden to delete the window subclass object.
+	template<typename obj_t, typename ... arg_t>
+	obj_t* subclassThisWindow(HWND wnd, arg_t && ... arg) {
+		PFC_ASSERT( wnd != NULL );
+		auto ret = newWindowObj<obj_t>(std::forward<arg_t>(arg) ...);
+		WIN32_OP_D(ret->SubclassWindow(wnd));
+		return ret;
+	}
+
+	//! Creates a new window object, of ctrl_t typem with automatic lifetime management, 
+	//! and replaces an existing control in a dialog.
+	template<typename ctrl_t>
+	ctrl_t * replaceDialogCtrl(CWindow wndDialog, UINT replaceControlID) {
+		CWindow wndReplace = wndDialog.GetDlgItem(replaceControlID);
+		ATLASSERT(wndReplace != NULL);
+		CRect rc;
+		CWindow wndPrev = wndDialog.GetNextDlgTabItem(wndReplace, TRUE);
+		WIN32_OP_D(wndReplace.GetWindowRect(&rc));
+		WIN32_OP_D(wndDialog.ScreenToClient(rc));
+		CString text;
+		wndReplace.GetWindowText(text);
+		WIN32_OP_D(wndReplace.DestroyWindow());
+		auto ctrl = newWindowObj<ctrl_t>();
+		WIN32_OP_D(ctrl->Create(wndDialog, &rc, text, 0, 0, replaceControlID));
+		if (wndPrev != NULL) ctrl->SetWindowPos(wndPrev, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE);
+		ctrl->SetFont(wndDialog.GetFont());
+		return ctrl;
+	}
+}
\ No newline at end of file