CBL_SCR_ALLOCATE_COLOR

Syntax:

call "CBL_SCR_ALLOCATE_COLOR" using     table-count
                                        RGB-values
                                        color-attribute
                                        non-exact-match
                              returning status-code

Parameters

table-count
Call prototype (see Key): cblt-x2-compx
Picture: pic x(2) comp-x.
RGB-values
Group predefined as cblt-generic-attr-rgb-values containing:
01 cblt-generic-attr-rgb-values  typedef.
  03 cblte-garv-red-value        cblt-x2-compx.	         *> pic x(2) comp-x.
  03 cblte-garv-green-value      cblt-x2-compx. 	        *> pic x(2) comp-x.
  03 cblte-garv-blue-value       cblt-x2-compx.          *> pic x(2) comp-x.
  03 cblte-garv-filler           cblt-x1-compx occurs 2. *> pic x(2).
color-attribute
Call prototype: cblt-x4-compx occurs ntimes
Picture: pic x4 occurs ntimes.
non-exact-match
Call prototype: cblt-x4-compx occurs ntimes
Picture: pic x occurs ntimes.
status-code
See Library Routines - Key.

On Entry:

table-count The number of colors requested.
  The table of color(s) to search for or add to the colormap.

On Exit:

color-attribute The table of indexes to the colormap corresponding to the colors requested. This can be an existing colormap entry, or an unallocated read-write colormap entry set to the requested color.
non-exact-match The table of flags indicating whether or not the corresponding occurrence of color-attribute represents an exact match. Zero if the match was exact, otherwise nonzero.
table-count The number of colors successfully allocated. This is normally the number requested but is less if the call was not entirely successful.
RGB-values The table of RGB values actually used during the search, truncated to suit the environment.
cblte-garv-filler Unused.

Comments:

The RGB value can either be specified as a literal or be obtained using a call to the CBL_SCR_NAME_TO_RGB routine. The algorithm for determining the nearest match is environment-defined.