From ff06cf1935ca7e7c419518210e537cb9b5f5aaf7 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Sun, 19 Apr 2026 10:16:13 +0000
Subject: [PATCH] freqdisplay: fix crash on exit transparent mode by using
 deleteLater()

Agent-Logs-Url: https://github.com/srcejon/sdrangel/sessions/9fb3e940-7f8e-46a9-8095-5ebc03428c00

Co-authored-by: srcejon <57259258+srcejon@users.noreply.github.com>
---
 plugins/feature/freqdisplay/freqdisplaygui.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/plugins/feature/freqdisplay/freqdisplaygui.cpp b/plugins/feature/freqdisplay/freqdisplaygui.cpp
index 7cb84431f..741b0bdad 100644
--- a/plugins/feature/freqdisplay/freqdisplaygui.cpp
+++ b/plugins/feature/freqdisplay/freqdisplaygui.cpp
@@ -569,7 +569,13 @@ void FreqDisplayGUI::applyTransparency()
     {
         if (m_overlay)
         {
-            delete m_overlay;
+            // Hide immediately so the overlay disappears at once, then schedule
+            // deletion for after the current event-loop iteration.  Plain delete
+            // would crash here because onExitTransparentMode() is invoked via a
+            // signal emitted from inside the overlay's contextMenuEvent(), which
+            // is still on the call stack when we reach this point.
+            m_overlay->hide();
+            m_overlay->deleteLater();
             m_overlay = nullptr;
         }
         show();