如何确定哪些监控摇摆鼠标事件中出现？

Question

我有一个部件上的Java的MouseListener来检测鼠标印刷机。我怎样才能知道哪些监控按下鼠标发生？

@Override
public void mousePressed(MouseEvent e) {
  // I want to make something happen on the monitor the user clicked in
}

我想达到的效果是：当用户按下我的应用程序的鼠标按钮，弹出一个窗口显示一些信息，直到鼠标被释放。我想确保该窗口用户点击其中被定位，但我需要使得整个窗口是可见的调整在当前屏幕上的窗口的位置。

Answer 1

您可以从 Java显示信息.awt.GraphicsEnvironment 。你可以用它来获取关于您的本地系统信息。包括每个监视器的边界。

Point point = event.getPoint();

GraphicsEnvironment e 
     = GraphicsEnvironment.getLocalGraphicsEnvironment();

GraphicsDevice[] devices = e.getScreenDevices();

Rectangle displayBounds = null;

//now get the configurations for each device
for (GraphicsDevice device: devices) { 

    GraphicsConfiguration[] configurations =
        device.getConfigurations();
    for (GraphicsConfiguration config: configurations) {
        Rectangle gcBounds = config.getBounds();

        if(gcBounds.contains(point)) {
            displayBounds = gcBounds;
        }
    }
}

if(displayBounds == null) {
    //not found, get the bounds for the default display
    GraphicsDevice device = e.getDefaultScreenDevice();

    displayBounds =device.getDefaultConfiguration().getBounds();
}
//do something with the bounds
...

Answer 2

里奇的回答帮我找到一个完整的解决方案：

public void mousePressed(MouseEvent e) {
    final Point p = e.getPoint();
    SwingUtilities.convertPointToScreen(p, e.getComponent());
    Rectangle bounds = getBoundsForPoint(p);
    // now bounds contains the bounds for the monitor in which mouse pressed occurred
    // ... do more stuff here
}


private static Rectangle getBoundsForPoint(Point point) {
    for (GraphicsDevice device : GraphicsEnvironment.getLocalGraphicsEnvironment().getScreenDevices()) {
        for (GraphicsConfiguration config : device.getConfigurations()) {
            final Rectangle gcBounds = config.getBounds();
            if (gcBounds.contains(point)) {
                return gcBounds;
            }
        }
    }
    // if point is outside all monitors, default to default monitor
    return GraphicsEnvironment.getLocalGraphicsEnvironment().getMaximumWindowBounds();
}

Answer 3

由于Java 1.6，你可以使用getLocationOnScreen，在以前的版本中，你必须得到生成该事件的组件的位置：

Point loc;
// in Java 1.6
loc = e.getLocationOnScreen();
// in Java 1.5 or previous
loc = e.getComponent().getLocationOnScreen();

您必须使用GraphicsEnvironment中类来获取绑定的屏幕。

Answer 4

也许e.getLocationOnScreen（）;将工作？这只是为Java 1.6。