实例
connect(ui->comboBox, SIGNAL(currentIndexChanged(int)), this, SLOT(onComboxIndexChange(int)));
connect(发出信号者,SIGNAL( 信号者的信号),连接对象, 回调函数,连接方式);
实例
connect(ui->comboBox, SIGNAL(currentIndexChanged(int)), this, SLOT(onComboxIndexChange(int)));
connect(发出信号者,SIGNAL( 信号者的信号),连接对象, 回调函数,连接方式);