Qt for HarmonyOS/qtohosextras doc/Audio Stream Usage Hint Example
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Audio Stream Usage Hint Example
Demonstrates tagging Qt sound playback with an OHOS audio stream usage hint.
A combo box lists all QtOhosExtras::Multimedia::AudioStreamUsageHint values. Two buttons play a bundled sound either through QSoundEffect or through QSound; before playback the selected hint is applied with Multimedia::setAudioStreamUsageHintProperty(). The hint influences how the system routes the audio and which volume policy applies.
Note: The target object must be a QSoundEffect or QSound instance; other object types are rejected with an error log. The example sets the hint before starting playback.