In Windows 7, a single click or mouse hover over on an icon or button of a running application program on the Task Bar, a preview bar will pop up above the Taskbar with thumbnails of its opened windows. On applications with more than one open windows, user will have to click again one of the preview thumbnails to switch and jump to the window. … Continue reading Hack to Switch to Last Active Program Window On Taskbar Icon or Button Click (Skip Selection)