Removing/Hiding the control bar

What I'm trying to do is remove/hide the title bar at the top of the window. For any Java programmers out there I'm looking for the equivalent of jFrame.setUndecorated(true); which removes the bar that contains the minimize, maximize and close buttons. Then I'd add a couple custom buttons for minimize and close (not quite sure how to do minimize yet but close is a simple link to a function which calls abort I believe). This is my first stab at some of the more advanced stuff so I apologize if this is trivial 🙄

If you are talking about the installer, edit the UI (e.g. Contrib\UIs\modern.exe) with Resource Hacker and the resource 105.

-Stu

..and add the WS_DLGFRAME style..

Appreciate the help guys. This leads to another question: is it possible to make the InstallOptions dialog transparent? What I'd like to do is use an "image menu" whereby I'd use a BgImage (already have that working). Overlayed on top of that would be the "menu image" with buttons "embedded" as part of the image.