本文整理汇总了C++中QWeakPointer::clear方法的典型用法代码示例。如果您正苦于以下问题：C++ QWeakPointer::clear方法的具体用法？C++ QWeakPointer::clear怎么用？C++ QWeakPointer::clear使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QWeakPointer的用法示例。
在下文中一共展示了QWeakPointer::clear方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: processMouseEvent
void QApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent *e)
{
if (!e->widget)
return;
// qDebug() << "handleMouseEvent" << tlw << ev.pos() << ev.globalPos() << hex << ev.buttons();
static QWeakPointer<QWidget> implicit_mouse_grabber;
QEvent::Type type;
// move first
Qt::MouseButtons stateChange = e->buttons ^ buttons;
if (e->globalPos != QPoint(qt_last_x, qt_last_y) && (stateChange != Qt::NoButton)) {
QWindowSystemInterfacePrivate::MouseEvent * newMouseEvent =
new QWindowSystemInterfacePrivate::MouseEvent(e->widget.data(), e->timestamp, e->localPos, e->globalPos, e->buttons);
QWindowSystemInterfacePrivate::windowSystemEventQueue.prepend(newMouseEvent); // just in case the move triggers a new event loop
stateChange = Qt::NoButton;
}
QWidget * tlw = e->widget.data();
QPoint localPoint = e->localPos;
QPoint globalPoint = e->globalPos;
QWidget *mouseWindow = tlw;
Qt::MouseButton button = Qt::NoButton;
if (qt_last_x != globalPoint.x() || qt_last_y != globalPoint.y()) {
type = QEvent::MouseMove;
qt_last_x = globalPoint.x();
qt_last_y = globalPoint.y();
if (qAbs(globalPoint.x() - mousePressX) > mouse_double_click_distance||
qAbs(globalPoint.y() - mousePressY) > mouse_double_click_distance)
mousePressButton = Qt::NoButton;
}
else { // check to see if a new button has been pressed/released
for (int check = Qt::LeftButton;
check <= Qt::XButton2;
check = check << 1) {
if (check & stateChange) {
button = Qt::MouseButton(check);
break;
}
}
if (button == Qt::NoButton) {
// Ignore mouse events that don't change the current state
return;
}
buttons = e->buttons;
if (button & e->buttons) {
if ((e->timestamp - mousePressTime) < static_cast<ulong>(QApplication::doubleClickInterval()) && button == mousePressButton) {
type = QEvent::MouseButtonDblClick;
mousePressButton = Qt::NoButton;
}
else {
type = QEvent::MouseButtonPress;
mousePressTime = e->timestamp;
mousePressButton = button;
mousePressX = qt_last_x;
mousePressY = qt_last_y;
}
}
else
type = QEvent::MouseButtonRelease;
}
if (self->inPopupMode()) {
//popup mouse handling is magical...
mouseWindow = qApp->activePopupWidget();
implicit_mouse_grabber.clear();
//### how should popup mode and implicit mouse grab interact?
} else if (tlw && app_do_modal && !qt_try_modal(tlw, QEvent::MouseButtonRelease) ) {
//even if we're blocked by modality, we should deliver the mouse release event..
//### this code is not completely correct: multiple buttons can be pressed simultaneously
if (!(implicit_mouse_grabber && buttons == Qt::NoButton)) {
//qDebug() << "modal blocked mouse event to" << tlw;
return;
}
}
// find the tlw if we didn't get it from the plugin
if (!mouseWindow) {
mouseWindow = QApplication::topLevelAt(globalPoint);
}
if (!mouseWindow && !implicit_mouse_grabber)
mouseWindow = QApplication::desktop();
if (mouseWindow && mouseWindow != tlw) {
//we did not get a sensible localPoint from the window system, so let's calculate it
localPoint = mouseWindow->mapFromGlobal(globalPoint);
}
// which child should have it?
QWidget *mouseWidget = mouseWindow;
if (mouseWindow) {
QWidget *w = mouseWindow->childAt(localPoint);
if (w) {
//.........这里部分代码省略.........