问题定义：我有一个名为 runSensor 的外部应用程序，它与传感器通信。传感器通过 UDP 发送数据。使用终端， runSensor 有两个参数可与传感器进行通信以进行数据采集：start和stop。
一旦到达终端，我呼叫：$ runSensor start，示例输出如下：
[Time 07:20:11:000]: Device PoweredOn.
[Time 07:20:11:010]: x=1.231, y=-0.022, z=0.001
[Time 07:20:11:015]: x=1.235, y=-0.024, z=0.001
[Time 07:20:11:020]: x=1.241, y=-0.024, z=0.002
[Time 07:20:11:025]: x=1.258, y=-0.027, z=0.002
我需要使用 QT -UI致电start和stop。为此，我有一个 QDialog 如下：
Dialog::Dialog(QWidget *parent) :
QDialog(parent),
ui(new Ui::Dialog)
{
ui->setupUi(this);
this->socketHandler = std::make_shared<udpHandler>();
this->runSensorStartProcess = std::make_shared<QProcess>();
this->runSensorStopProcess = std::make_shared<QProcess> ();
//--------------------------
// SIGNAL - SLOT
//--------------------------
connect(ui->startButton, SIGNAL(clicked()), this, SLOT(onStartButtonClicked()));
connect(ui->stopButton, SIGNAL(clicked()), this, SLOT(onStopButtonClicked()));
connect(this->socketHandler.get(), SIGNAL(sendUdpContent(QString)), this, SLOT(updateMessageBrowser(QString)));
connect(this->runSensorStartProcess.get(), SIGNAL(readyReadStandardError()), this, SLOT(printError()));
}
我使用QProcess来调用 runSensor 应用程序的开始和停止。当我按下 GUI 的开始按钮时，数据采集开始，但 GUI 冻结，我无法点击停止按钮。< / p>
代码提取：以下是我实施 start 按钮点击的方式：
void Dialog::onStartButtonClicked()
{
this->runSensorStartProcess->start("start");
//this->runSensorStartProcess->waitForFinished(-1);
//--------------------------
// udp socket handler starts picking data and write it into a file
//--------------------------
if (!this->runSensorStartProcess->waitForStarted())
{
qWarning() << "Warning: Cannot start Cygwin process!";
}
}
停止按钮点击实现类似：
void Dialog::onStopButtonClicked()
{
if(this->runSensorStartProcess.get() != NULL)
{
this->runSensorStartProcess->close();
}
this->runSensorStopProcess->start("stop");
if (!this->runSensorStopProcess->waitForStarted())
{
qWarning() << "Warning: Cannot stop Cygwin!";
}
}
问题：
runSensorStartProcess启动后保持GUI响应？ runSensorStartProcess）？thread runSensorStartProcess吗？