Set the subtitle member of message.
#include <bps/notification.h>
BPS_API int notification_message_set_subtitle(notification_message_t *message,
const char *subtitle)
BlackBerry 10.0.0
A pointer to the notification_message_t structure whose subtitle you want to set.
The subtitle of the message to display.
The notification_message_set_subtitle() function sets the subtitle of a notification to be displayed. The subtitle member is valid for the notification_alert() and notification_notify() functions.
If you don't call this function, no subtitle is displayed by the message.
BPS_SUCCESS upon success, BPS_FAILURE with errno set otherwise.