For the thread being debugged, retrieves the value in the thread local storage (TLS) slot for the specified TLS index.
[in] Thread running in the target process to read from.
[in] The TLS index that was allocated when the target process called the TlsAlloc function.
[out] The pointer-sized value which was stored in the thread's TLS slot. If the target thread is 32-bit, the upper 32-bits of this value will be zero.
Each thread of a process has its own slot for each TLS index.