一个DELPHI的 钩子使用的例子，可以检测键盘的按键，看用户按下了哪个键并返回该键的键值-DELPHI hooks example, you can detect the keys of the keyboard to see if the user which key was pressed and returns the key of the key

自動即時偵測當前網絡是否連通範例,DELPHI7開發-Automatically detect the current network connectivity immediate example, DELPHI 7 Development