比较漂亮的实例#include"iconhelper.h"IconHelper*IconHelper::_instance=0;IconHelper::IconHelper(QObject*):QObject(qApp){intfontId=QFontDatabase::addApplicationFont(":/image/fontawesome-webfont.ttf");QStringfontName=QFontDatabase::applicationFontFamilies(fontId).at(0);iconFont=QFont(fon