_PCW_CALLBACK_INFORMATION

//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 };