To Mahesh Chand about Transparent controls!

Hi, i read your book and it was a gr8 help, but in the last chapter when you said about the transparent controls, the example wasn't so perfect, i mean it doesn't show how can i make a control transparent and see another control through it not the form color but another control Like a pictureBox with an image. (e.g. i want to see a pictureBox through a panel) i tried the Transparent Color but it didn't work, i aslo tried to make a custom control and on the event (onPaintbackgrounf) i draw only a transparent rectangle and prevent the base class to draw the background butr it also didn't work. do u have any solution for this? also other readers are welcomed to join.