QWindowPrivate: de-inline dtor and ctor

It's private API, but exported, so de-inline the dtor to pin the
vtable in QtGui instead of potentially duplicating it in every library
that uses the class.

Ditto ctor, but that's just code hygiene: we don't want the code to be
duplicated across all users.

Task-number: QTBUG-45582
Change-Id: I91ea38be20fc67795466a68ca5721837255b33a0
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
(cherry picked from commit b31c4e38dc7015663825ee46d124a8759388d67f)
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

2 files changed, 11 insertions, 5 deletions

diff --git a/src/gui/kernel/qwindow.cpp b/src/gui/kernel/qwindow.cpp
index cf1dabbff9..2ca4814bfa 100644
--- a/src/gui/kernel/qwindow.cpp
+++ b/src/gui/kernel/qwindow.cpp
@@ -234,6 +234,15 @@ QWindow::~QWindow()
         QGuiApplicationPrivate::currentMousePressWindow = nullptr;
 }
 
+QWindowPrivate::QWindowPrivate()
+    : QObjectPrivate()
+{
+    isWindow = true;
+}
+
+QWindowPrivate::~QWindowPrivate()
+    = default;
+
 void QWindowPrivate::init(QScreen *targetScreen)
 {
     Q_Q(QWindow);
diff --git a/src/gui/kernel/qwindow_p.h b/src/gui/kernel/qwindow_p.h
index 34fddf801b..dafd09b1e2 100644
--- a/src/gui/kernel/qwindow_p.h
+++ b/src/gui/kernel/qwindow_p.h
@@ -73,11 +73,8 @@ public:
         WindowFrameExclusive
     };
 
-    QWindowPrivate()
-        : QObjectPrivate()
-    {
-        isWindow = true;
-    }
+    QWindowPrivate();
+    ~QWindowPrivate() override;
 
     void init(QScreen *targetScreen = nullptr);