标签:放大缩小 int point poi 1.0 pre else oom ble
#if 0 //QChart 放大缩小
double z = 1.0;
QPoint numDegrees = e->angleDelta()/8;
double zi = qAbs(0.1*numDegrees.ry()/15);
if(e->angleDelta().y()>0){
z -= zi;
}else{
z += zi;
}
m_chart->zoom(z);
#endif
标签:放大缩小 int point poi 1.0 pre else oom ble
原文地址:https://www.cnblogs.com/cheungxiongwei/p/9186729.html