不反對前面的幾個說法,不過你們沒有解釋為什麼「默認」在下面的歷史原因。看看 Windows 的開發者 Raymond Chen 的解釋:Why does the taskbar default to the bottom of the screen?
最早 windows taskbar 就是在上面的。
這個是 windows 代號 Chicago Beta-1,就是 windows 95 的開發版本。在正式發布之前,因為 GetWindowPlacement 獲得窗口位置並保存位置,然後使用 SetWindowPos 設置窗口位置,如果 taskbar 在上面,原點就不是 (0,0) ,而應該有一個 y 軸的位移,但是開發人員認為這個太麻煩,乾脆把 taskbar 移到下面去算了。
If you put the taskbar at the top of the screen, lots of windows end up sliding under it, because they assumed that the usable area of the screen began at (0,0). Other windows would "creep" up the screen because they used GetWindowPlacement to save their window position (which returns workspace coordinates, where (0,0) is the first usable pixel) but use SetWindowPos to restore it (which uses screen coordinates, where (0,0) is the upper left pixel of the primary monitor).
There were too many apps that kept sliding under the top-docked taskbar so we had to abandon that idea and move it to the bottom.