--- nono/wx/wxbitmappanel.cpp	2026/04/29 17:05:08	1.1
+++ nono/wx/wxbitmappanel.cpp	2026/04/29 17:05:12	1.1.1.2
@@ -69,6 +69,10 @@ WXBitmapPanel::OnSize(wxSizeEvent& event
 void
 WXBitmapPanel::OnPaint(wxPaintEvent& event)
 {
+	if (__predict_false(bitmap.GetBuf() == NULL)) {
+		return;
+	}
+
 	// 継承クラスによる描画
 	Draw();