--- nono/wx/wxtextscreen.h	2026/04/29 17:04:28	1.1
+++ nono/wx/wxtextscreen.h	2026/04/29 17:04:37	1.1.1.2
@@ -1,6 +1,7 @@
 //
 // nono
-// Copyright (C) 2018 isaki@NetBSD.org
+// Copyright (C) 2020 nono project
+// Licensed under nono-license.txt
 //
 
 #pragma once
@@ -18,7 +19,7 @@
 //
 class WXTextScreen : public WXTextPanel
 {
-	typedef WXTextPanel inherited;
+	using inherited = WXTextPanel;
 
  public:
 	WXTextScreen(wxWindow *parent, int col, int row, const uint16 *textbuf);
@@ -36,11 +37,11 @@ class WXTextScreen : public WXTextPanel
  private:
 	void Draw(wxDC& dc);
 
-	const uint16 *textbuf = NULL;
-	uint16 *prevbuf = NULL;
-	uint8 *bmpbuf = NULL;
-	wxImage *image = NULL;
-	wxBitmap *bitmap = NULL;
+	const uint16 *textbuf {};
+	std::unique_ptr<uint16[]> prevbuf {};
+	std::unique_ptr<uint8[]> bmpbuf {};
+	std::unique_ptr<wxImage> image {};
+	std::unique_ptr<wxBitmap> bitmap {};
 
 	int col = 0;
 	int row = 0;