.\" This page was automatically generated. Do not edit! .\" .TH PLGCOLBGA 3plplot "September, 2014" "" "PLplot API" .SH NAME \fBplgcolbga\fP - Returns the background color (cmap0[0]) by 8-bit RGB value and double 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 double alpha transparency value. .P This function is used in example 31. .SH ARGUMENTS .TP \fIr\fP (PLINT *, output) Pointer to an unsigned 8-bit integer (0-255) representing the degree of red in the color. .TP \fIg\fP (PLINT *, output) Pointer to an unsigned 8-bit integer (0-255) representing the degree of green in the color. .TP \fIb\fP (PLINT *, output) Pointer to an unsigned 8-bit integer (0-255) representing the degree of blue in the color. .TP \fIalpha\fP (PLFLT *, output) Pointer to PLFLT alpha transparency value. .SH AUTHORS Many developers (who are credited at http://plplot.sourceforge.net/credits.php) have contributed to PLplot over its long history. .SH SEE ALSO PLplot documentation at http://plplot.sourceforge.net/documentation.php.