int callback_ex(unsigned user_gpio, unsigned edge, CBFuncEx_t f, void *user) {return intCallback(user_gpio, edge, f, user, 1);}
void djvColorWidget::floatCallback(double) { intCallback(0); }
int callback(unsigned user_gpio, unsigned edge, CBFunc_t f) {return intCallback(user_gpio, edge, f, 0, 0);}