在辅助监视器上全屏显示

Question

如何编写dotNet Windows(或WPF)应用程序以使其在辅助监视器上全屏显示？

Answer 1

最大化窗口到辅助监视器的扩展方法(如果有).不要假设辅助监视器是System.Windows.Forms.Screen.AllScreens [2];

using System.Linq;
using System.Windows;

namespace ExtendedControls
{
    static public class WindowExt
    {

        // NB : Best to call this function from the windows Loaded event or after showing the window
        // (otherwise window is just positioned to fill the secondary monitor rather than being maximised).
        public static void MaximizeToSecondaryMonitor(this Window window)
        {
            var secondaryScreen = System.Windows.Forms.Screen.AllScreens.Where(s => !s.Primary).FirstOrDefault();

            if (secondaryScreen != null)
            {
                if (!window.IsLoaded)
                    window.WindowStartupLocation = WindowStartupLocation.Manual;

                var workingArea = secondaryScreen.WorkingArea;
                window.Left = workingArea.Left;
                window.Top = workingArea.Top;
                window.Width = workingArea.Width;
                window.Height = workingArea.Height;
                // If window isn't loaded then maxmizing will result in the window displaying on the primary monitor
                if ( window.IsLoaded )
                    window.WindowState = WindowState.Maximized;
            }
        }
    }
}

Answer 2

对于WPF应用,请查看此帖子.最终,它取决于WindowState何时设置为最大化.如果您在XAML或窗口构造函数中设置它(即在加载窗口之前),它将始终在主显示器上最大化.另一方面,如果在加载窗口时将WindowState设置为Maximized,它将在之前最大化的屏幕上最大化.

Answer 3

我注意到一个主张在Loaded事件中设置位置的答案,但是当窗口首次显示正常然后最大化时,这会导致闪烁.如果您在构造函数中订阅SourceInitialized事件并在其中设置位置,它将处理最大化到辅助监视器而不闪烁 - 我假设WPF在这里

public MyWindow()
{
    SourceInitialized += MyWindow_SourceInitialized;
}

void MyWindow_SourceInitialized(object sender, EventArgs e)
{
    Left = 100;
    Top = 50;
    Width = 800;
    Height = 600;
    WindowState = WindowState.Maximized;
}

在辅助显示器上替换任何代号

Answer 4

请参阅此代码项目文章.

其中的代码可以使用,但默认为主监视器.要更改此设置,您需要替换对GetSystemMetrics的调用将调用GetMonitorInfo.使用GetMonitorInfo,您可以获取适当的RECT以传递给SetWindowPos.

GetMonitorInfo允许您获取任何监视器的RECT.

有一篇关于多监视器设置中的位置应用程序的MSDN文章可能有助于更好地解释事情.

Answer 5

private void Form1_Load(object sender, EventArgs e)
{
   this.FormBorderStyle = FormBorderStyle.None;
   this.Bounds = GetSecondaryScreen().Bounds;
}

private Screen GetSecondaryScreen()
{
   foreach (Screen screen in Screen.AllScreens)
   {
      if (screen != Screen.PrimaryScreen)
         return screen;
   }
   return Screen.PrimaryScreen;
}