2 files changed, 9 insertions, 12 deletions
diff --git a/src/plugins/platforms/cocoa/qcocoawindow.mm b/src/plugins/platforms/cocoa/qcocoawindow.mm
index 35b7162346..a744a86695 100644
--- a/src/plugins/platforms/cocoa/qcocoawindow.mm
+++ b/src/plugins/platforms/cocoa/qcocoawindow.mm
@@ -1275,14 +1275,11 @@ void QCocoaWindow::windowWillClose()
 bool QCocoaWindow::windowShouldClose()
 {
     qCDebug(lcQpaWindow) << "QCocoaWindow::windowShouldClose" << window();
-   // This callback should technically only determine if the window
-   // should (be allowed to) close, but since our QPA API to determine
-   // that also involves actually closing the window we do both at the
-   // same time, instead of doing the latter in windowWillClose.
-    bool accepted = false;
-    QWindowSystemInterface::handleCloseEvent(window(), &accepted);
-    QWindowSystemInterface::flushWindowSystemEvents();
-    return accepted;
+    // This callback should technically only determine if the window
+    // should (be allowed to) close, but since our QPA API to determine
+    // that also involves actually closing the window we do both at the
+    // same time, instead of doing the latter in windowWillClose.
+    return QWindowSystemInterface::handleCloseEvent<QWindowSystemInterface::SynchronousDelivery>(window());
 }
 
 // ----------------------------- QPA forwarding -----------------------------
diff --git a/src/plugins/sqldrivers/ibase/qsql_ibase.cpp b/src/plugins/sqldrivers/ibase/qsql_ibase.cpp
index b0b5375222..d0928fe6ab 100644
--- a/src/plugins/sqldrivers/ibase/qsql_ibase.cpp
+++ b/src/plugins/sqldrivers/ibase/qsql_ibase.cpp
@@ -40,6 +40,7 @@
 #include "qsql_ibase_p.h"
 #include <qcoreapplication.h>
 #include <qdatetime.h>
+#include <qdeadlinetimer.h>
 #include <qvariant.h>
 #include <qsqlerror.h>
 #include <qsqlfield.h>
@@ -1570,10 +1571,9 @@ void QIBaseDriver::close()
             d->eventBuffers.clear();
 
 #if defined(FB_API_VER)
-            // Workaround for Firebird crash
-            QTime timer;
-            timer.start();
-            while (timer.elapsed() < 500)
+            // TODO check whether this workaround for Firebird crash is still needed
+            QDeadlineTimer timer(500);
+            while (!timer.hasExpired())
                 QCoreApplication::processEvents();
 #endif
         }