过滤器结构

QCanBusDevice::Filter filter;
QList<QCanBusDevice::Filter> filterList;

// filter all CAN bus packages with id 0x444 (base) or 0xXXXXX444 (extended)
filter.frameId = 0x444u;
filter.frameIdMask = 0x7FFu;
filter.format = QCanBusDevice::Filter::MatchBaseAndExtendedFormat;
filter.type = QCanBusFrame::InvalidFrame;
filterList.append(filter);

// filter all DataFrames with extended CAN bus package format
filter.frameId = 0x0;
filter.frameIdMask = 0x0;
filter.format = QCanBusDevice::Filter::MatchExtendedFormat;
filter.type = QCanBusFrame::DataFrame;
filterList.append(filter);

// apply filter
device->setConfigurationParameter(QCanBusDevice::RawFilterKey, QVariant::fromValue(filterList));