CMyWinMainWindow
{
...
    MyEventTest(CMyEvent *event);
    paintEvent(QPaintEvent *event);
}

CMyWin::MyEventTest(CMyEvent *event)
{
//该函数执行
   repaint();
}

CMyWin::paintEvent(QPaintEvent *event);
{
...
}

...
CThread::run()
{
...
CMyWin
    for(int i = 0;i < 10;i++)
    {
         CMyEvent event;
         QThread::postEvent();
    }
}