I would like to make a simple application which is transparent but retains the \'normal\' borders, close button, minimize and maximize button.
I know how to make the win
I would first look at the (a)lpha setting in the rgb(a) color of the background color. The alpha setting sets the opacity of the object color.
Although, I notice that as I'm posting this, there is another post before mine that looks more concise and would probably be more appropriate for you.