// 注冊應用程序全局鍵盤事件, 所有的鍵盤事件都會被此事件監聽器處理.
Toolkit tk = Toolkit.getDefaultToolkit();
tk.addAWTEventListener(new MyAWTEventListener(), AWTEvent.KEY_EVENT_MASK);
class MyAWTEventListener implements AWTEventListener {
private boolean controlPressed = false;
private boolean cPressed = false;
@Override
public void eventDispatched(AWTEvent event) {
if (event.getClass() == KeyEvent.class) {
// 被處理的事件是鍵盤事件.
KeyEvent keyEvent = (KeyEvent) event;
if (keyEvent.getID() == KeyEvent.KEY_PRESSED) {
keyPressed(keyEvent);
} else if (keyEvent.getID() == KeyEvent.KEY_RELEASED) {
keyReleased(keyEvent);
}
}
}
private void keyPressed(KeyEvent event) {
if (event.getKeyCode() == KeyEvent.VK_CONTROL) {
controlPressed = true;
} else if (event.getKeyCode() == KeyEvent.VK_C) {
cPressed = true;
}
if (controlPressed && cPressed) {
// 當Ctr + C 被按下時, 進行相應的處理.
System.out.println("Ctr + C");
}
}
private void keyReleased(KeyEvent event) {
if (event.getKeyCode() == KeyEvent.VK_CONTROL) {
controlPressed = false;
} else if (event.getKeyCode() == KeyEvent.VK_C) {
cPressed = false;
}
}
}