[提问]QbyteArray 为什么有警告？ [复制链接]

    QByteArray ba;
    ba.resize(3);
    ba[0]=0xcf;
    ba[1]=0xfe;
    ba[2]=0x62;
    if(ba[1]==0xfe)//该行有警告！
        qDebug("=====1");

警告:ISO C++ says that these are ambiguous, even though the worst conversion for the first is better than the worst conversion for the second:
: candidate 1: bool QByteRef::operator==(char) const

最好是 0xfe 改成 '\xfe'

if(ba[1]==0xfe)改成
if(0xfe == ba[1])试试