Can't find windows' CreateThread function / concurrency.spawn crashes host application

[alkololl via Digitalmars-d-learn]

Hey there and a happy new year,

I wrote a C++ Dll which gets injecrted into another process. Now 
I want to port that Dll to D. In my C++ Dll I used a while loop 
which captures all keystrokes via GetAsyncKeyState and waited for 
F7 to be pressed and lastly unloads the dll via 
FreeLibraryAndExitThread.
This while loop needs to be run out of an dedicated thread.
I've found that std.c.windows.windows doesn't include a 
definition for Windows API's CreateThread method and the usage of 
concurrency.spawn crashes my host application (in which the Dll 
gets injected to).

How am I supposed to create a thread in the host application? Or 
are there other ways to capture the F7 keystroke?