WPF：多屏幕
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WPF: Multiple screens
提问by Nathan Friend
I'm writing a screensaver in WPF. I have the screensaver working, however, it only displays on my main monitor. Is there a way to "black out" or draw graphics to additional monitors when the user has multiple displays? I've done some searching around, but haven't found anything relevant.
我正在用 WPF 编写屏幕保护程序。我有屏幕保护程序，但是，它只显示在我的主显示器上。当用户有多个显示器时，有没有办法“黑掉”或将图形绘制到额外的显示器上？我已经做了一些搜索，但没有找到任何相关的东西。
UPDATE
更新
From ananthonline's answer below, I was able to accomplish the "black out" effect on non-primary displays using the following window:
从下面 ananthonline 的回答中，我能够使用以下窗口在非主要显示器上实现“停电”效果：
<Window x:Class="ScreenSaver.BlackOut"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Cursor="None" WindowStyle="None" ResizeMode="NoResize" Background="Black">
</Window>
and initializing one for each screen in App.xaml.csusing the following process:
并App.xaml.cs使用以下过程为每个屏幕初始化一个：
foreach (Screen s in Screen.AllScreens)
{
if (s != Screen.PrimaryScreen)
{
BlackOut blackOut = new BlackOut();
blackOut.Top = s.WorkingArea.Top;
blackOut.Left = s.WorkingArea.Left;
blackOut.Width = s.WorkingArea.Width;
blackOut.Height = s.WorkingArea.Height;
blackOut.Show();
}
}
Note an import to System.Windows.Formsis required to access the Screenclass.
请注意System.Windows.Forms，访问Screen该类需要导入到。
采纳答案by Ani
You should be able to use the System.Drawing.Screen.* classes to set up multiple windows on each screen. Mind that you don't set each window to be maximized, but a properly sized, border less window.
您应该能够使用 System.Drawing.Screen.* 类在每个屏幕上设置多个窗口。请注意，您没有将每个窗口设置为最大化，而是设置一个大小合适、无边框的窗口。
Also - you might want to remember that the total bounds of the multi monitor setup may not always be a rectangle (if you plan to "union" all the bounds to create a window spanning all monitors).
此外 - 您可能要记住，多监视器设置的总边界可能并不总是一个矩形（如果您计划“联合”所有边界以创建一个跨越所有监视器的窗口）。
