From f033895b527220d52ccad5cf2f0ac0ab51e646ce Mon Sep 17 00:00:00 2001
From: Raphael Coeffic <raphael.coeffic@frafos.com>
Date: Sat, 4 Jun 2022 16:51:20 +0200
Subject: [PATCH] fix(mixers): cleanup callback on parent before being
 destroyed

---
 radio/src/gui/colorlcd/model_mixes.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/radio/src/gui/colorlcd/model_mixes.cpp b/radio/src/gui/colorlcd/model_mixes.cpp
index 18d5851a2..527dfce4e 100644
--- a/radio/src/gui/colorlcd/model_mixes.cpp
+++ b/radio/src/gui/colorlcd/model_mixes.cpp
@@ -175,6 +175,7 @@ class MixLineButton : public InputMixButton
  public:
   MixLineButton(Window* parent, uint8_t index);
   void paint(BitmapBuffer* dc) override;
+  void deleteLater(bool detach = true, bool trash = true) override;
 
  protected:
   size_t getLines() const override;
@@ -241,6 +242,13 @@ MixLineButton::MixLineButton(Window* parent, uint8_t index) :
   lv_obj_add_event_cb(p_obj, mix_draw_mplex, LV_EVENT_DRAW_PART_END, lvobj);
 }
 
+void MixLineButton::deleteLater(bool detach, bool trash)
+{
+  lv_obj_t* p_obj = parent->getLvObj();
+  lv_obj_remove_event_cb_with_user_data(p_obj, mix_draw_mplex, lvobj);
+  InputMixButton::deleteLater(detach, trash);
+}
+
 size_t MixLineButton::getLines() const
 {
   const MixData* mix = mixAddress(index);