<object> S (A)

Converts A to string and forbids automatic type conversion for resulting object.

Example:

(CALLAPI “MessageBoxA” “User32.dll” 0 “Hello World” “12” 0)    ; error! 12 is passed as number

Solution:

(SETF str (S “12”) )

(CALLAPI “MessageBoxA” “User32.dll” 0 “Hello World” str 0)