java - 有什么方法可以检测窗口在哪个监视器上吗？

Question

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Answer 1

是的，这是可能的。我会将我的答案简化为根据 Window 的顶部 x,y 位置获取监视器(因此，如果您将框架的上半部分从任何监视器上移开，这当然会失败，通常这代码并不健壮，但可以作为入门示例)。

public GraphicsDevice getMonitorWindowIsOn(Window window)
{
    // First, grab the x,y position of the Window object
    GraphicsConfiguration windowGraphicsConfig = window.getGraphicsConfiguration();
    if (windowGraphicsConfig == null)
    {
         return null; // Should probably be handled better
    }
    Rectangle windowBounds = windowGraphicsConfig.getBounds();

    for (GraphicsDevice gd : ge.getScreenDevices()) {
        Rectangle monitorBounds = gd.getDefaultConfiguration().getBounds();
        if (monitorBounds.contains(windowBounds.x, windowBounds.y))
        {
            return gd;
        }
    }
    // um, return null I guess, should make this default better though,
    // maybe to the default screen device, except, I am sure if no monitors are
    // connected that may be null as well.
    return null;
}

关于 window.getGraphicsConfiguration() 的初始调用，it can return null :

Gets the GraphicsConfiguration associated with this Component. If the Component has not been assigned a specific GraphicsConfiguration, the GraphicsConfiguration of the Component object's top-level container is returned. If the Component has been created, but not yet added to a Container, this method returns null.