Fix crash on exit

Saving preferences failed on macOS, causing the crash.
Now preferences are saved each time preference dialog
is closed, or a recent item is added or changes.
Also changed the preference folder into a more
describing one instead of the old Qt3DSComposer, which
is not used anywhere else in code or docs.

Task-number: QT3DS-2499
Change-Id: I1f725e246c3fd491aa9600ddf0503e96af6ed1de
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/Authoring/Studio/MainFrm.cpp b/src/Authoring/Studio/MainFrm.cpp
index 280cca70..8b7b5644 100644
--- a/src/Authoring/Studio/MainFrm.cpp
+++ b/src/Authoring/Studio/MainFrm.cpp
@@ -917,10 +917,16 @@ void CMainFrame::EditPreferences(short inPageIndex)
                     (float)CStudioPreferences::DEFAULT_SELECTOR_LENGTH);
 
         RecheckSizingMode();
+
+        // Save preferences, to make sure we do not lose them on a possible crash
+        QTimer::singleShot(0, [](){ CStudioPreferences::savePreferences(); });
     } else if (thePrefsReturn == PREFS_RESET_LAYOUT) {
         onViewResetLayout();
     } else if (thePrefsReturn == PREFS_SETTINGS_RESTART) {
         QTimer::singleShot(0, this, &CMainFrame::handleRestart);
+    } else if (thePrefsReturn != 0) {
+        // Save preferences, to make sure we do not lose them on a possible crash
+        QTimer::singleShot(0, [](){ CStudioPreferences::savePreferences(); });
     }
 }