UID:170745
UID:144078
nigoole:用下面这个方法试试:for (int i = 0; i < 49; i++) { dataSend[0] = rand() % 100 + 10;}serialport->write(dataSend);....... (2016-03-24 17:19)
nigoole:dataSend 定义为QByteArray dataSend; (2016-03-24 17:20)
UID:153943
yuyu414:int a = 0x1234;QByteArray ba;memcpy(ba.data(), &a, 4);serialPort->write(ba); (2016-03-25 15:01)
UID:123401
realfan:memcpy(ba.data(), &a, 4);会有问题ba的空间有不够的风险,ba的size也无法确定。这种要么将整数转成字符串,要么用QDataStream (2016-03-29 15:45)
jlh94:memcpy是什么函数啊 (2016-03-25 18:32)