用程序来模拟Alt+PrtSc的键盘事件，实现截屏功能

来源：互联网发布：综艺游戏环节名知乎编辑：程序博客网时间：2024/05/20 18:27

用Alt+PrtSc进行截屏时，按键顺序为

step1:按下Alt键

step2:按下PrtSc键

Step3:释放PrtSc键

Step4:释放Alt键

以下程序可用来模拟键的按下和释放

Display display = Display.getCurrent();

//模拟step1
  Event event = new Event();
  event.type = SWT.KeyDown;
  event.keyCode = SWT.ALT;//  event.keyCode = SWT.MOD3;
  display.post(event);
  if (!display.readAndDispatch())
   display.sleep();

//模拟step2
  event = new Event();
  event.type = SWT.KeyDown;
  event.keyCode = SWT.PRINT_SCREEN;
  display.post(event);
  if (!display.readAndDispatch())
   display.sleep();

//模拟step3
  event = new Event();
  event.type = SWT.KeyUp;
  event.keyCode = SWT.PRINT_SCREEN;
  display.post(event);
  if (!display.readAndDispatch())
   display.sleep();

//模拟step4
  event = new Event();
  event.type = SWT.KeyUp;
  event.keyCode = SWT.ALT;//  event.keyCode = SWT.MOD3;
  display.post(event);
  if (!display.readAndDispatch())
   display.sleep();