From c0842aceaf9881caba798f2569e6e1cf03ce7f70 Mon Sep 17 00:00:00 2001
From: Paul Olav Tvete <paul.tvete@qt.io>
Date: Thu, 8 Dec 2016 12:08:12 +0100
Subject: [PATCH] Make size grip work with high dpi scaling

Task-number: QTBUG-53389
Change-Id: I6e922f0555ae296f3152d4df2598534fa73fb584
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
---
 src/plugins/platforms/xcb/qxcbwindow.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/plugins/platforms/xcb/qxcbwindow.cpp b/src/plugins/platforms/xcb/qxcbwindow.cpp
index 5fa8541f26..ff01fa019e 100644
--- a/src/plugins/platforms/xcb/qxcbwindow.cpp
+++ b/src/plugins/platforms/xcb/qxcbwindow.cpp
@@ -2738,7 +2738,7 @@ bool QXcbWindow::startSystemResize(const QPoint &pos, Qt::Corner corner)
     const xcb_atom_t moveResize = connection()->atom(QXcbAtom::_NET_WM_MOVERESIZE);
     if (!connection()->wmSupport()->isSupportedByWM(moveResize))
         return false;
-    const QPoint globalPos = window()->mapToGlobal(pos);
+    const QPoint globalPos = QHighDpi::toNativePixels(window()->mapToGlobal(pos), window()->screen());
 #ifdef XCB_USE_XINPUT22
     if (connection()->startSystemResizeForTouchBegin(m_window, globalPos, corner))
         return true;