I\'ve got two questions about Windows 7 task preview. In Delphi I\'d like to create my own buttons inside the area highlighted in the screenshot below.
1) Is it poss
No, those are defined by Windows (and always will be buttons) and you can provide the icons that appear on them. Here is a white paper on the API to do it.
http://msdn.microsoft.com/en-us/magazine/dd942846.aspx#id0420081
http://blogs.microsoft.co.il/blogs/sasha/archive/2009/02/26/windows-7-taskbar-thumbnail-toolbars.aspx