Add a picturebox control to the MDI Parent form... did you see how it snapped to the top? Presently, it is aligned 1-Top (see properties). Make it aligned left and then adjust its width to what you want. Now, you will also notice that if you make a child form visible while the picture box is visible in the parent form, the child does not cover the picture box. In fact, the area taken up by the picture box is unavailable to the child but if you make the picturebox.visible=false, then the child form will be able to occupy that space. So now that you have the picturebox sized and anchored to where you want it, you can now draw the treeview control in it and size it.