See DECLARE LIBRARY.

The ALIAS clause in a DECLARE LIBRARY statement block tells the program the name of the procedure used in the external library.

SUB pseudoname ALIAS actualname [(parameters)]

• The pseudo name is the name of the SUB or FUNCTION the QB64 program will use.
• The actual name is the same procedure name as it is inside of the DLL library.
• QB64 must use all parameters of imported procedures including optional ones.

• The ALIAS name clause is optional as the original library procedure name can be used.
• The procedure name does not have to be inside of quotes when using DECLARE LIBRARY.
• QB64 does not support optional parameters.

Instead of creating a SUB with the Library statement inside of it, just rename it:

DECLARE LIBRARY
    SUB MouseMove ALIAS glutWarpPointer (BYVAL xoffset&, BYVAL yoffset&)
END DECLARE

DO UNTIL _SCREENEXISTS: LOOP
PRINT "Hit a key..."
SLEEP

MouseMove 1, 1

Explanation: When a Library procedure is used to represent another procedure name use ALIAS instead. Saves creating a SUB! Just place your name for the procedure first with the actual Library name after ALIAS.

• SUB, FUNCTION
• DECLARE LIBRARY, BYVAL
• DECLARE DYNAMIC LIBRARY