Version (MQLONG)
Callback descriptor structure - Version field
This
is the structure version number; the value must be:
- MQCBD_VERSION_1
- Version-1 callback descriptor structure.
The following constant specifies the version number of the current
version:
- MQCBD_CURRENT_VERSION
- Current version of callback descriptor structure.
This is always an input field. The initial value of this field is MQCBD_VERSION_1.