Hello,
Currently I'm developing a pdf reader that support page curling. I'm trying to get the page curl (the solid white part) to be transparent (Please see the attached image below). So how can I achieve this? lh5.googleusercontent.com/juF2mm6xtB-XZ2...A-IIUbuMY=w1896-h835
Thanks
Dan
Replacing back_color didn't help, as the curling part is still solid. Please have a look at this link below, I think you might have a better understanding of what I'm trying to archive