C#中 pictruebox显示两幅图片的叠加

Question

C#，叠加显示，pictruebox

Answer 1

byte alpha=128;
float perAlpha=alpha/255.0f;
ColorMatrix cm = new ColorMatrix(
     new float[][]{
       new float[]{1f,0,0,0,0},
       new float[]{0,1f,0,0,0},
       new float[]{0,0,1f,0,0},
       new float[]{0,0,0,perAlpha,0},
       new float[]{0,0,0,0,1f}
     }
);

Answer 2

http://blog.csdn.net/hermit/article/details/2003680

Answer 3

http://blog.csdn.net/hermit/article/details/2003680 

Answer 4

http://blog.csdn.net/hermit/article/details/2003680