U.C. Image control with two Images

I have made a user control that acts like a regular image control as I not only needed transparency I also need a handle because I use APIs to do things to the image that I can't do this using a regular image control. The user control shows a transparent image which I can change it's appearance using APIs but I was wondering if I can have two images in one control so all I would have to do is toggles between the two images. Both images would have to be transparent.

Can I have two images in one control and how would I implement a second image in a control?