今天在使用QString::Compare比较两个地址是否相同。可是结果却出现一个奇怪的返回值。闲话不多说，代码先贴上：
代码：
QString CurrentSelect = plistwidget->CurrentItem();
qDebug()<<"CurrentSelect:"<<CurrentSelect;
if( CurrentSelect.isEmpty() || CurrentSelect.isNull() )
return;
QString CurrentPlay = mediaplayer->currentMedia().canonicalUrl().path();
qDebug()<<"CurrentPlay:"<<CurrentPlay;
qDebug()<<"compare:"<<QString::compare(CurrentPlay,CurrentSelect);
结果：
CurrentSelect: "F:/KuGou/Beyond - 光辉岁月.mp3"
CurrentPlay: "/F:/KuGou/Beyond - 光辉岁月.mp3"
compare: -23
//两个字符相等
CurrentSelect: "F:/KuGou/Kanye West - Diamonds From Sierra Leone.mp3"
CurrentPlay: "/F:/KuGou/Beyond - Amani.mp3"
compare: -23
//两个字符不相等
之后我以为是我中文字符不被支持，然后又做了个实验：
代码：
QString test1("test1");
QString test2("test2");
QString test;
test=test2;
qDebug()<<"compare1::"<<QString::compare(test1,test);
qDebug()<<"compare2::"<<QString::compare(test2,test);
test1="你好";
test2="你好呀";
qDebug()<<"test1:"<<test1;
qDebug()<<"test2:"<<test2;
test=test2;
qDebug()<<"compare3::"<<QString::compare(test1,test);
qDebug()<<"compare4::"<<QString::compare(test2,test);
结果：
compare1:: -1
compare2:: 0
test1: "你好"
test2: "你好呀"
compare3:: -1
compare4:: 0
这我就不明白了，不是因为字符编码的问题？那是什么问题？所以想请教各位道友，有没有出现过这样的问题？？
