Irrlicht Engine

yes i have tried but with no result :

There remains an apparent border



https://www.noelshack.com/2017-22-1496132881-menu.png

Hi, i have used this code to make my tab control transparent : for (irr::s32 i=0; i < irr::gui::EGDC_COUNT; ++i) { irr::video::SColor col = this->skin->getColor((irr::gui::EGUI_DEFAULT_COLOR)i); col.set(0, 0, 0, 0); this->skin->setColor((irr::gui::EGUI_DEFAULT_COLOR)i, col); } but checkboxes are als...