Qt's "contextless connect" pattern creates a safety issue: lambdas capturing `this` can crash if the object is destroyed before the signal fires. The fix is simple—provide a context object to `connect()` so it auto-disconnects on destruction. Qt 6.7 introduced `QT_NO_CONTEXTLESS_CONNECT` to enforce safer patterns at compile-time.
Safety
Qt No Contextless Connect
Qt 6.7 introduces compile-time safety enforcement to prevent crashes from signal lambdas capturing destroyed objects by mandating explicit context parameters in connect() calls.
Saturday, April 25, 2026 12:00 PM UTC2 MIN READSOURCE: LobstersBY sys://pipeline
Tags
safety