我已经启动定时器等待某些条件为真。如果条件是真的,那么我停止定时器,不希望超时信号发出或执行连接的插槽。但是,如果condition在指定时间内为false,则可以发出信号timeout()。但不管是什么情况,它总是发出超时信号。我也用过blockSignals (true),它不起作用。有谁能给我点建议吗?
void timerStart( QTimer* timer, int timeMillisecond )
{
timer = new QTimer( this );
timer->setInterval( timeMillisecond );
timer->setSingleShot( true );
connect( timer, SIGNAL( timeout() ), this, SLOT( noRespFrmServer( ) ) ) ;
//timer->start( timeMillisecond );
timer->start();
}
void timerStop( QTimer* timer )
{
connect( timer, SIGNAL( destroyed( timer ) ), this, SLOT( stopTimerbeforeTimeout( ) ) );
qDebug() << " we are in timer stop";
if( timer )
{
timer->stop();
timer->blockSignals( true );
delete timer;
}
}
也在timerStop函数中,我试图发出被破坏的信号,但我得到的响应是它无法连接。
void timerStart( QTimer* timer, int timeMillisecond )
{
timer = new QTimer( this );
timer->setInterval( timeMillisecond );
timer->setSingleShot( true );
connect( timer, SIGNAL( timeout() ), this, SLOT( noRespFrmServer( ) ) ) ;
//timer->start( timeMillisecond );
timer->start();
}
这实际上并没有返回你刚刚创建的计时器。你想要这样的:
QTimer *timerStart(int timeMillisecond )
{
QTimer* timer = new QTimer( this );
timer->setInterval( timeMillisecond );
timer->setSingleShot( true );
connect( timer, SIGNAL( timeout() ), this, SLOT( noRespFrmServer( ) ) ) ;
//timer->start( timeMillisecond );
timer->start();
return timer;
}
然后你可以将返回的计时器传递到停止函数,尽管我建议你使用deleteLater而不是直接删除它:
void timerStop( QTimer* timer )
{
qDebug() << " we are in timer stop";
if( timer )
{
qDebug() << " we are stopping the timer";
timer->stop();
timer->blockSignals( true );
timer->deleteLater();
}
}