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.TH PLGCOLBGA 3plplot  "January, 2019" "" "PLplot API"
.SH NAME
\fBplgcolbga\fP - Returns the background color (cmap0[0]) by 8-bit RGB value and PLFLT alpha transparency value
.SH SYNOPSIS
\fBplgcolbga\fP(\fIr\fP, \fIg\fP, \fIb\fP, \fIalpha\fP)
.SH DESCRIPTION

.P
Returns the background color (cmap0[0]) by 8-bit RGB value and PLFLT alpha transparency value.
.P
This function is used in example 31.
.SH ARGUMENTS
.TP
\fIr\fP (\fBPLINT_NC_SCALAR\fP(3plplot), output)
Returned value of the red intensity in the range from 0 to 255.
.TP
\fIg\fP (\fBPLINT_NC_SCALAR\fP(3plplot), output)
Returned value of the green intensity in the range from 0 to 255.
.TP
\fIb\fP (\fBPLINT_NC_SCALAR\fP(3plplot), output)
Returned value of the blue intensity in the range from 0 to 255.
.TP
\fIalpha\fP (\fBPLFLT_NC_SCALAR\fP(3plplot), output)
Returned value of the alpha transparency in the range (0.0-1.0).

.SH AUTHORS
Many developers (who are credited at http://plplot.org/credits.php)
have contributed to PLplot over its long history.
.SH SEE ALSO
PLplot documentation at http://plplot.org/documentation.php.