Changing shape of windows form and raise custom event

Question

I am creating an application like "Rocket Dock. I want to

1) Change the default shape of the windows form. Like curve edges etc. 2) How can I raise event so that when I move cursor to the top of the screen, my app appears and when leave the interface it moves upward and disappear?

Answer 1

1) There are a couple of ways to create a custom WinForm shape

1a) Set the form's background to an image and use a transparency key:
http://msdn.microsoft.com/en-us/library/aa289517%28v=vs.71%29.aspx

1b) Define a custom shape using System.Drawing and set the forms region to your newly created path: http://codegod.org/WebAppCodeGod/Creating-Custom-Shapes-for-Forms-in-Windows-Forms-AID377.aspx

2) Collapse your form to a very small size and hook the MouseEnter (or MouseHover) event to trigger the "entering" effect. You can hook the Form's MouseLeave event to trigger the "leaving" effect.