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Bug
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Resolution: Fixed
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P2: Important
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6.8.4, 6.9.2
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Windows
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3
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42b3dd064 (dev), 88790da2d (6.10), d2afe045d (tqtc/lts-6.8)
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Foundation Sprint 140
On Windows, QBluetoothDeviceInfo::isCached() always reports true for all discovered BLE devices, including those actively advertising and not known to the system. This makes it impossible to distinguish cached devices from live ones.
#include <QtCore> #include <QtBluetooth> int main(int argc, char *argv[]) { QCoreApplication app(argc, argv); QTextStream out(stdout); QBluetoothDeviceDiscoveryAgent agent; agent.setLowEnergyDiscoveryTimeout(6000); auto show = [&](QString tag, const QBluetoothDeviceInfo &info) { auto id = info.address().isNull() ? info.deviceUuid().toString() : info.address().toString(); out << tag << " " << info.name() << " [" << id << "] isCached=" << info.isCached() << " rssi=" << info.rssi() << "\n"; }; QObject::connect(&agent, &QBluetoothDeviceDiscoveryAgent::deviceDiscovered, [&](auto info){ show("DISC", info); }); QObject::connect(&agent, &QBluetoothDeviceDiscoveryAgent::deviceUpdated, [&](auto info, auto){ show("UPDT", info); }); QObject::connect(&agent, &QBluetoothDeviceDiscoveryAgent::finished, [&]{ out << "FINISHED\n"; app.quit(); }); agent.start(QBluetoothDeviceDiscoveryAgent::LowEnergyMethod); return app.exec(); }
- Devices found during the current scan should return false
- Only devices coming from the system’s cache should return true