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//0x4 bytes (sizeof)
enum _TP_CALLBACK_PRIORITY
{
    TP_CALLBACK_PRIORITY_HIGH = 0,
    TP_CALLBACK_PRIORITY_NORMAL = 1,
    TP_CALLBACK_PRIORITY_LOW = 2,
    TP_CALLBACK_PRIORITY_INVALID = 3,
    TP_CALLBACK_PRIORITY_COUNT = 3
};