Collision Detection on Transparent PictureBox Images...

[Conroy Vanderbluff]

I am able to change a color of a PictureBox to transparent. I am wondering how I can detect when it collides with other PictureBox controls that also have certain parts of them transparent.

Below, you'll see he passes behind the first tree but crosses the second.

I would like for him to stop at (collide with) the second tree, but only at the "trunk" of it.

Thank You.