bool loadOperationIcons(const QPalette &p, const QString &name, QPixmap &normal, QPixmap &inverse);
bool loadMiddleButtonIcons(const QPalette &p, const QString &name, QIcon &normal, QIcon &mirrored);
bool loadOperationIcons(const QPalette &p, const QString &name, QPixmap &normal, QPixmap &inverse);
bool loadMiddleButtonIcons(const QPalette &p, const QString &name, QIcon &normal, QIcon &mirrored);