1 files changed, 7 insertions, 2 deletions
diff --git a/src/plugins/platforms/windows/qwindowsmousehandler.cpp b/src/plugins/platforms/windows/qwindowsmousehandler.cpp
index 09a99ffd02..e82b2a5155 100644
--- a/src/plugins/platforms/windows/qwindowsmousehandler.cpp
+++ b/src/plugins/platforms/windows/qwindowsmousehandler.cpp
@@ -280,8 +280,13 @@ bool QWindowsMouseHandler::translateMouseEvent(QWindow *window, HWND hwnd,
         globalPosition = winEventPosition;
         clientPosition = QWindowsGeometryHint::mapFromGlobal(hwnd, globalPosition);
     } else {
-        clientPosition = winEventPosition;
         globalPosition = QWindowsGeometryHint::mapToGlobal(hwnd, winEventPosition);
+        auto targetHwnd = hwnd;
+        if (auto *pw = window->handle())
+            targetHwnd = HWND(pw->winId());
+        clientPosition = targetHwnd == hwnd
+            ? winEventPosition
+            : QWindowsGeometryHint::mapFromGlobal(targetHwnd, globalPosition);
     }
 
     // Windows sends a mouse move with no buttons pressed to signal "Enter"
@@ -494,7 +499,7 @@ bool QWindowsMouseHandler::translateMouseEvent(QWindow *window, HWND hwnd,
     }
 
     if (!discardEvent && mouseEvent.type != QEvent::None) {
-        QWindowSystemInterface::handleMouseEvent(window, winEventPosition, globalPosition, buttons,
+        QWindowSystemInterface::handleMouseEvent(window,clientPosition, globalPosition, buttons,
                                                  mouseEvent.button, mouseEvent.type,
                                                  keyModifiers, source);
     }