diff options
Diffstat (limited to 'src/plugins/platforms/xcb/qxcbwindow.cpp')
| -rw-r--r-- | src/plugins/platforms/xcb/qxcbwindow.cpp | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/plugins/platforms/xcb/qxcbwindow.cpp b/src/plugins/platforms/xcb/qxcbwindow.cpp index 17fafd5ef0..789229c0a7 100644 --- a/src/plugins/platforms/xcb/qxcbwindow.cpp +++ b/src/plugins/platforms/xcb/qxcbwindow.cpp @@ -2336,9 +2336,14 @@ void QXcbWindow::handleMotionNotifyEvent(int event_x, int event_y, int root_x, i QPoint local(event_x, event_y); QPoint global(root_x, root_y); - // "mousePressWindow" can be NULL i.e. if a window will be grabbed or umnapped, so set it again here - if (connection()->buttons() != Qt::NoButton && connection()->mousePressWindow() == Q_NULLPTR) + // "mousePressWindow" can be NULL i.e. if a window will be grabbed or unmapped, so set it again here. + // Unset "mousePressWindow" when mouse button isn't pressed - in some cases the release event won't arrive. + const bool isMouseButtonPressed = (connection()->buttons() != Qt::NoButton); + const bool hasMousePressWindow = (connection()->mousePressWindow() != Q_NULLPTR); + if (isMouseButtonPressed && !hasMousePressWindow) connection()->setMousePressWindow(this); + else if (hasMousePressWindow && !isMouseButtonPressed) + connection()->setMousePressWindow(Q_NULLPTR); handleMouseEvent(timestamp, local, global, modifiers, source); } |