1 files changed, 21 insertions, 17 deletions
diff --git a/ui/tray_icon.h b/ui/tray_icon.h
index 866d79d5..24c97eb0 100644
--- a/ui/tray_icon.h
+++ b/ui/tray_icon.h
@@ -4,38 +4,42 @@
 // * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved        *
 // **************************************************************************
 
-#ifndef TRAYICON_H_INCLUDED
-#define TRAYICON_H_INCLUDED
+#ifndef TRAYICON_H_84217830427534285
+#define TRAYICON_H_84217830427534285
 
-#include <wx/event.h>
+#include <functional>
 #include <wx/image.h>
 
-//show tray icon with progress during lifetime of this instance
-//emits the following wxCommandEvent in case user double-clicks on tray icon or selects corresponding context menu item:
-extern const wxEventType FFS_REQUEST_RESUME_TRAY_EVENT;
+/*
+show tray icon with progress during lifetime of this instance
 
-class FfsTrayIcon : public wxEvtHandler
+ATTENTION: wxWidgets never assumes that an object indirectly destroys itself while processing an event!
+           this includes wxEvtHandler-derived objects!!!
+           it seems ProcessEvent() works (on Windows), but AddPendingEvent() will crash since it uses "this" after the event processing!
+
+=> don't derive from wxEvtHandler or any other wxWidgets object here!!!!!!
+=> use simple std::function as callback instead => instance may now be safely deleted in callback!
+*/
+
+class FfsTrayIcon
 {
 public:
-    FfsTrayIcon();
+    FfsTrayIcon(const std::function<void()>& onRequestResume); //callback only held during lifetime of this instance
     ~FfsTrayIcon();
 
     void setToolTip(const wxString& toolTip);
     void setProgress(double fraction); //number between [0, 1], for small progress indicator
 
 private:
-    FfsTrayIcon(const FfsTrayIcon&);
-    FfsTrayIcon& operator=(const FfsTrayIcon&);
-
-    void OnContextMenuSelection(wxCommandEvent& event);
-    void OnDoubleClick(wxCommandEvent& event);
+    FfsTrayIcon(const FfsTrayIcon&); //=delete
+    FfsTrayIcon& operator=(const FfsTrayIcon&); //=delete
 
     class TaskBarImpl;
-    TaskBarImpl* trayIcon; //actual tray icon (don't use inheritance to enable delayed deletion)
+    TaskBarImpl* trayIcon;
 
-    wxString toolTipLast;
-    double fractionLast;
+    wxString activeToolTip;
+    double activeFraction;
     wxImage logo;
 };
 
-#endif // TRAYICON_H_INCLUDED
+#endif //TRAYICON_H_84217830427534285