Hi MoShaz-
 
The definitions of the DAQmx_Val_... attribute values can be found in C:\Program Files\National Instruments\NI-DAQ\DAQmx ANSI C Dev\include\NIDAQmx.h.  Depending on your version of NI-DAQmx, they should begin around line 850 or so.
 
Hopefully this helps-
					
				
			
			
				
	Tom W
National Instruments