检测哪个显示器显示窗口

2022-01-24 00:00:00 windows toolkit java jframe multiple-monitors

我确实有可以包含不同组件的主应用程序 JFrame 窗口.当用户选择可编辑的文本字段时，我会打开一个自行实现的 OnScreenKeyboard.OSK 也是一个 JFrame 窗口.

I do have main application JFrame window which can include different components. I open a self implemented OnScreenKeyboard when the user select a editable textfield. The OSK is also a JFrame window.

当用户将主窗口拖到另一个监视器上时，OSK 也应该显示在同一监视器上.为此，我必须检测显示主要 JFrame 的监视器.

When the user drag the main window to another monitor, the OSK should also be shown on the same monitor. For this i have to detect the monitor the main JFrame is shown.

我尝试在

Toolkit.getDefaultToolkit()

但找不到东西.

你知道我如何检测显示 JFrame 的监视器吗?

Do you know how i can detect the monitor where a JFrame is shown?

Java-版本 1.4视窗XP

Java-Version 1.4 Windows XP

谢谢

推荐答案

回答，如果所有可用监视器的解决方案都相同.

Answer, if the solution of all available monitors are the same.

对于AWT:

每个控件都有 getMonitor() 方法，可以从中计算屏幕位置，如下所示:

Every Control does have the method getMonitor() from which the screen position get can calculated from like:

Monitor widgetMonitor = mTextWidget.getMonitor();
Rectangle monitorRect = widgetMonitor.getBounds();

if(monitorRect.x < 0){
   // shown in left monitor, starting from the main monitor
}

if(monitorRect.x > monitorRect.width){
   // shown in right monitor, starting from the main monitor
}

对于 SWT:

这只是我原始代码的一个片段.您应该询问返回值是否不为 null 之类的！

It is just a snip at my origial code. you should ask if return values are not null ans something like this!

    int monitorWidth = 0;
    GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
    GraphicsDevice[] screenDevices = ge.getScreenDevices();
    if(screenDevices.length > 0){
        monitorWidth = screenDevices[0].getDisplayMode().getWidth();
    }


    Point ownerLocationOnScreen = owner.getLocationOnScreen();

    int screenMovingX = 0;
    if(ownerLocationOnScreen.x < 0){
        screenMovingX = -monitorWidth;
    }
    if(ownerLocationOnScreen.x > monitorWidth){
        screenMovingX = monitorWidth;
    }

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