pub unsafe extern "system" fn EvtGetChannelConfigProperty(
    channelconfig: EVT_HANDLE,
    propertyid: EVT_CHANNEL_CONFIG_PROPERTY_ID,
    flags: u32,
    propertyvaluebuffersize: u32,
    propertyvaluebuffer: *mut EVT_VARIANT,
    propertyvaluebufferused: *mut u32,
) -> BOOL