QtConcurrent子线程循环读取图片，不进入槽函数。本意是主窗口刷大图，开个线程定时刷局部小图

[弄潮儿的乐园]

//创建子线程
int CGFPro::CreateThread()
{

int nReuslt = QtConcurrent::run(this, &CGFPro::StartReadImage);
return 0;
}

//假设循环十次，每次定时器结束触发读图
int CGFPro::StartReadImage()
{

QTimer *timer_time = new QTimer();
timer_time->setInterval(100);
connect(timer_time, &QTimer::timeout, this, &CGFPro::slot_TimeOut, Qt::DirectConnection);
//定时器刷新
for (int nIndex = 0; nIndex <10; nIndex++)
{
timer_time->start(400);
nIndex++;
}
return 0;
}

//读取指定文件夹下图片--不进入槽函数，无法读图，也不报错
void CGFPro::slot_TimeOut()
{
读取图像
}

[抓紧猪尾巴]

我觉得你子线程里面for循环处理timer有问题，你可以试一下子线程里把for循环先去掉直接start一次timer看能不能进slot

[斜阳日落]

你可以看看你头文件那里是否把这个槽函数放到了slots:下面

[斜阳日落]

for函数比较快，可能还没等定时器定时到达就重启了定时器，那样就没有进入槽函数了

[astro_lee]

没有事件循环timer事件怎么触发？ 摘自QTimer文档： In multithreaded applications, you can use QTimer in any thread that has an event loop. To start an event loop from a non-GUI thread, use QThread::exec(). Qt uses the timer's thread affinity to determine which thread will emit the timeout() signal. Because of this, you must start and stop the timer in its thread; it is not possible to start a timer from another thread.

[开心大爆炸]

为什么用for循环开定时器呢？
不用for循环，直接timer_time->start(400);就可以打开定时器了呀