//控制死窗体 int width = this->geometry().width(); int height = this->geometry().height(); this->setFixedSize(width,height);
//定时器的使用 QTimer *serialReadTimer = new QTimer;
connect(serialReadTimer,SIGNAL(timeout()),this,SLOT(readSerial())); serialReadTimer->start(100);
原文：http://www.cnblogs.com/lt-6/p/6720502.html