在form1上放置“Additional”选项卡的shape、image组件，以及其他组件-" Additional" tab, shape, image component, and other components placed in form1

delphi控件，根据选择的图片把窗体变成图片的形状，可以设置透明底色，窗体透明的地方可以鼠标穿透-delphi controls, depending on the selected image into a picture of the shape of the form, you can set up a transparent background, transparent form where it can penetrate the mouse