Qt 获取文件路径、文件名、后缀

QString file_full, file_name, file_path，file_suffix ;  2 QFileInfo fileinfo;  3 file_full = QFileDialog::getOpenFileName(this,.....);  4 fileinfo = QFileInfo(file_full);  5 //文件名
file_name = fileinfo.fileName();  7 //文件后缀
file_suffix = fileinfo.suffix()  9 //绝对路径
file_path = fileinfo.absolutePath();