这个代码演示了调用一个C语言编写的DLL如何旋转指定的图片（附C源代码），支持360度图片平滑旋转，掩码色改变，甚至可以调整图片透明度、亮度、色相、饱和度、大小缩放等图片常用的值。-This code demonstrates calling a DLL written in C language specifies how to rotate a picture (with C source code), to support a smooth 360-degree image rotation, color change in the mask, or even adjust the image transparency, brightness, hue, saturation, size scaling common values such as images.