Press the space bar to start drawing. Click the color in the upper right corner to change the color. Click on the lower right corner to erase the color. Thank you for @wwhsq @MengYu_PoX 中文里面有说明 ========================= 备用地址1（只在无法打开时才使用） ; http://www.haohaodada.com/show.php?id=435160# 备用地址2 ; http://mozhua.aerfaying.com/MProject?id=113267
