CreateFile library error

[SMcNeill]

Windows 64-bit applications:

Name/Length/QB64
----------------------
WORD/2 bytes/Integer
DWORD/4 bytes/Long or _offset
HANDLE/8 bytes/_Integer64 or _offset
HFILE/4 bytes/Long

https://www.ibm.com/docs/en/ibm-mq/7.5?t...data-types

Notice that on the page you specified, it lists POINTER as 4 bytes for 32-bit applications and 8-bytes for 64-bit applications.   

In QB64 _OFFSET changes size based on the bits of the EXE which you create.  In a 32-bit EXE, _OFFSET is a 4 bytes INTEGER.  In a 64-bit EXE, _OFFSET is an 8-byte INTEGER.