diff options
Diffstat (limited to 'src/gui/kernel/qwidget.cpp')
| -rw-r--r-- | src/gui/kernel/qwidget.cpp | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/src/gui/kernel/qwidget.cpp b/src/gui/kernel/qwidget.cpp index ed9d5de..e5310ea 100644 --- a/src/gui/kernel/qwidget.cpp +++ b/src/gui/kernel/qwidget.cpp @@ -7583,6 +7583,23 @@ void QWidgetPrivate::hideChildren(bool spontaneous) QWidget *widget = qobject_cast<QWidget*>(childList.at(i)); if (!widget || widget->isWindow() || widget->testAttribute(Qt::WA_WState_Hidden)) continue; +#ifdef QT_MAC_USE_COCOA + // Before doing anything we need to make sure that we don't leave anything in a non-consistent state. + // When hiding a widget we need to make sure that no mouse_down events are active, because + // the mouse_up event will never be received by a hidden widget or one of its descendants. + // The solution is simple, before going through with this we check if there are any mouse_down events in + // progress, if so we check if it is related to this widget or not. If so, we just reset the mouse_down and + // then we continue. + // In X11 and Windows we send a mouse_release event, however we don't do that here because we were already + // ignoring that from before. I.e. Carbon did not send the mouse release event, so we will not send the + // mouse release event. There are two ways to interpret this: + // 1. If we don't send the mouse release event, the widget might get into an inconsistent state, i.e. it + // might be waiting for a release event that will never arrive. + // 2. If we send the mouse release event, then the widget might decide to trigger an action that is not + // supposed to trigger because it is not visible. + if(widget == qt_button_down) + qt_button_down = 0; +#endif // QT_MAC_USE_COCOA if (spontaneous) widget->setAttribute(Qt::WA_Mapped, false); else @@ -7975,13 +7992,16 @@ inline void setDisabledStyle(QWidget *w, bool setStyle) // set/reset WS_DISABLED style. if(w && w->isWindow() && w->isVisible() && w->isEnabled()) { LONG dwStyle = GetWindowLong(w->winId(), GWL_STYLE); + LONG newStyle = dwStyle; if (setStyle) - dwStyle |= WS_DISABLED; + newStyle |= WS_DISABLED; else - dwStyle &= ~WS_DISABLED; - SetWindowLong(w->winId(), GWL_STYLE, dwStyle); - // we might need to repaint in some situations (eg. menu) - w->repaint(); + newStyle &= ~WS_DISABLED; + if (newStyle != dwStyle) { + SetWindowLong(w->winId(), GWL_STYLE, newStyle); + // we might need to repaint in some situations (eg. menu) + w->repaint(); + } } } #endif |