If I create a button like control, then I simply can draw button-like
lines on my User Control's surface by getting its Graphics g. If I draw
outside of the control's ClientRectangle (for example, -10,-10,-5,-5),
it is simply cut out.
But what about if I'm trying to make a dropdown list control in .NET?
The dropped down part is outside of the control's ClientRectangle. How
can I do such thing? Maybe create a borderless window and display it?
But that seems to be very slow ( because creating a .NET Form is very
slow) and there's another problem of z-order.
Please advise me. Thank you.