В модуле WinApi нашел такое описание:
## Код:
```
PtrSTR* = POINTER TO ARRAY [untagged] OF SHORTCHAR;
...
PROCEDURE wvsprintfA* ["USER32.dll", ""] (p0: PtrSTR; p1: PtrSTR; arglist: PtrSTR): INTEGER;
```


http://msdn.microsoft.com/en-us/library/windows/desktop/ms647550(v=vs.85).aspx