sending text to desktop

[sonicm3]

okay guys I can send text to the desktop fine from my delphi application, I type what I want to send and click go and it does just that.
The problem is this.
I can preset the font and color in the source and it prints to the desktop with clear background but sometimes it remembers the old text and even the old folder windows that were up from delphi?

1. I would like to select from 3 fonts
2. I would like to chose from a range of colors
3. I would like it to auto clear on the next section of text sent.

If this is not going to be a good idea, is it possible to send the text to the screen with a picture background and type over it so it does not remember the old style or even just a black background, hiding the desktop?
I want to keep everything in a single form and on the press of the button do it.
I have been playing around with this for a few days now just trying differnt things..

also what kind of text am I limited to with delphi? for example, typewritter style text? flashing square at the of text ect..?