//0x20 bytes (sizeof)
union _PCW_CALLBACK_INFORMATION
{
struct _PCW_COUNTER_INFORMATION AddCounter; //0x0
struct _PCW_COUNTER_INFORMATION RemoveCounter; //0x0
struct _PCW_MASK_INFORMATION EnumerateInstances; //0x0
struct _PCW_MASK_INFORMATION CollectData; //0x0
};