fontawesome的用处简单来说就是用字体实现图标。
fontawesome官网:http://fontawesome.dashgame.com/
fontawesome pro 收费版 官网:https://fontawesome.com/
int fontId = QFontDatabase::addApplicationFont(":/fonts/fontawesome-webfont.ttf");
QString fontName = QFontDatabase::applicationFontFamilies(fontId).at(0);
QFont iconFont = QFont(fontName);
iconFont.setPointSize(10);
ui->button->setFont(iconFont);
ui->button->setText(QChar(0xf00d));//0xf00d对应的是"关闭"字体图标,具体可以看官网
字体字符集合:https://fontawesome.com/cheatsheet
效果图: