qt大小写字符串比较

https://blog.csdn.net/GraceLand525/article/details/48625593

 

Qt::CaseSensitivity cs = Qt::CaseInsensitive;
if (!vidstring.isEmpty() && !vidstring.compare(varmap.usb_vid, cs) == 0)

ivid = 1;
if (!pidstring.isEmpty() && !pidstring.compare(varmap.usb_pid, cs) == 0)
ipid = 1;