NAME

wset_see_thru − set see_thru color index value

SYNOPSIS

int wset_see_thru(wmfd,see_thru);
int wmfd;
int see_thru;

DESCRIPTION

fd is an integer file descriptor for an opened window manager device interface. 

see_thru,
the see_thru color index. Colors are taken from the system (Starbase) color map.

DISCUSSION

This tells the window system what color index to use in the overlay planes when displaying see_thru and IMAGE windows.  This routine will modify the system color map by setting the old see_thru index back to the last known color map values and setting the new index to see_thru (transparent). 
 
Defaults for see_thru are set at window creation time. 
 
If a color is out of range for the device, an error is generated. Normally the valid range is from 0 to (2^N − 1), where N is the number of planes.

This call can be made on all devices, but will only have an effect on the HP98730. 

SEE ALSO

wget_see_thru(3W), windows(1), wmstart(1). 

DIAGNOSTICS

A return of −1 indicates failure; otherwise 0 is returned.  See errno(2) for more information.
 
 

Hewlett-Packard Company  —  May 11, 2021