The B744 doesn't have CWS, neither do most 757/767 (it used to be a company option). Don't know about the 777 or the 717 but doubt it. So the only "modern" Boeing that has CWS is the 737. There you can override the AP and force it into CWS P or CWS R by applying a specific force to the control wheel. That way you can have the AP keep altitude and have manual control the roll axis (or vice versa).
Note, the B744 and the B757/767's with updated MCP's and AP's will hold current ATTitude if the AP is engaged with no F/D mode active (ie. both FD's off). As has been stated, FBW Airbi don't have CWS - the "manual control" is basically something like CWS but it doesn't hold pitch but vertical acceleration when the stick is centered.