stm32+UCOSII+emwin+7寸液晶屏快速加载图片的方法，调用常用的emwin的函数一般显示速度在3秒，使用这个方法后显示0.1秒就可以算不刷新完成，值得借鉴-Stm32+ UCOSII+ emwin+ 7 inch LCD screen fast loading images, the method of commonly used emwin function called general display speed in 3 seconds, 0.1 seconds after