您搜索了: setsourcergb (英语 - 俄语)

$c =new cairocontext ( $s ); $c -> setsourcergb ( 0 , 0 , 0 );
$context =new cairocontext ( $surface );

$c -> lineto ( 90 , 90 ); $c -> setlinewidth ( 2 ); $c -> setsourcergb ( 1 , 1 , 1 ); $c -> stroke ();
$surface =new cairoimagesurface ( cairoformat :: argb32 , 80 , 50 );