Conference bulova::decw_jan-89_to_nov-90

2306.0. "Use of parameter/element names in DECW$X_.ADA" by GSRC::WEST (Variables don't, Constants aren't) Mon Feb 19 1990 15:13

  The following has been submitted as a QAR (Number 3988).  It is also posted
in the ADA conference.

================================================================================


  In relation to an earlier QAR that I submitted.  I would like to know
why the parameter names in the $ binding files, namely the .ADA files,
do not match those of the MIT X11 routines.  For instance the X11 definition
of XQueryColors has these parameters :

  display, colormap, defs_in_out, ncolors

The procedure spec in DECW$X_.ADA the parameter names are :

  display, colormap_id, screen_defs_return, num_colors


  Another question is why do the element names in record definitions have
extra characters in them, for instance the definition of the MIT X11
definition of XWindowAttributes has element names like :

  x
  y
  width
  height
  border_width
  depth
      .
      .
      .

and in the file DECW$X_.ADA the element names are :

  wdat_x
  wdat_y
  wdat_width
  wdat_height
  wdat_border_width
  wdat_depth
	.
	.
	.

Why is there a WDAT_ attached to each name ?


  These are questions often asked of my customers and I would like to give
them 'official' answers.

  Thank you,

						-=> Jim <=-