GDI+图形文字处理编程,如何在图像上添加标记,可以扩展-How to add markers on the image

内含图片处理类库，可对图像进行高速高保真任意角度旋转、添加水印文字、添加各种滤镜效果、进行颜色、对比度、灰度、等各种常用处理-Includes image processing libraries, high fidelity images can rotate at any angle, add watermark text, add a variety of filter effects, for color, contrast, gray, and other commonly used