如何得到活动屏幕尺寸？

我所寻找的是当前窗口所在的监视器的 System.Windows.SystemParameters.WorkArea等价物。

澄清: 有问题的窗口是 WPF，而不是 WinForm。

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最佳答案

Screen.FromControl、 Screen.FromPoint和 Screen.FromRectangle应该可以帮助你解决这个问题:

class MyForm : Form
{
public Rectangle GetScreen()
{
return Screen.FromControl(this).Bounds;
}
}

我不知道 WPF 的等效调用。因此，您需要执行类似于这个扩展方法的操作。

static class ExtensionsForWPF
{
public static System.Windows.Forms.Screen GetScreen(this Window window)
{
return System.Windows.Forms.Screen.FromHandle(new WindowInteropHelper(window).Handle);
}
}
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加上 ffpf

Screen.FromControl(this).Bounds
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你可以使用它来获取主屏幕的桌面工作区边界:

System.Windows.SystemParameters.WorkArea

这对于获取主屏幕的大小也很有用:

System.Windows.SystemParameters.PrimaryScreenWidth System.Windows.SystemParameters.PrimaryScreenHeight

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此外，你可能需要:

得到所有显示器的合并大小，而不是特定的一个。

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我想在打开我的第一个窗口之前有一个屏幕分辨率，所以这里有一个快速解决方案，在实际测量屏幕尺寸之前打开一个不可见的窗口(你需要调整窗口参数到你的窗口，以确保两者在同一个屏幕上是开放的-主要是 WindowStartupLocation是重要的)

Window w = new Window();
w.ResizeMode = ResizeMode.NoResize;
w.WindowState = WindowState.Normal;
w.WindowStyle = WindowStyle.None;
w.Background = Brushes.Transparent;
w.Width = 0;
w.Height = 0;
w.AllowsTransparency = true;
w.IsHitTestVisible = false;
w.WindowStartupLocation = WindowStartupLocation.Manual;
w.Show();
Screen scr = Screen.FromHandle(new WindowInteropHelper(w).Handle);
w.Close();
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我需要设置窗口应用程序的最大大小。这个选项可以相应地更改，因为应用程序显示在主屏幕或辅助屏幕中。为了克服这个问题，我创建了一个简单的方法，我接下来展示给你们:

/// <summary>
/// Set the max size of the application window taking into account the current monitor
/// </summary>
public static void SetMaxSizeWindow(ioConnect _receiver)
{
Point absoluteScreenPos = _receiver.PointToScreen(Mouse.GetPosition(_receiver));


if (System.Windows.SystemParameters.VirtualScreenLeft == System.Windows.SystemParameters.WorkArea.Left)
{
//Primary Monitor is on the Left
if (absoluteScreenPos.X <= System.Windows.SystemParameters.PrimaryScreenWidth)
{
//Primary monitor
_receiver.WindowApplication.MaxWidth = System.Windows.SystemParameters.WorkArea.Width;
_receiver.WindowApplication.MaxHeight = System.Windows.SystemParameters.WorkArea.Height;
}
else
{
//Secondary monitor
_receiver.WindowApplication.MaxWidth = System.Windows.SystemParameters.VirtualScreenWidth - System.Windows.SystemParameters.WorkArea.Width;
_receiver.WindowApplication.MaxHeight = System.Windows.SystemParameters.VirtualScreenHeight;
}
}


if (System.Windows.SystemParameters.VirtualScreenLeft < 0)
{
//Primary Monitor is on the Right
if (absoluteScreenPos.X > 0)
{
//Primary monitor
_receiver.WindowApplication.MaxWidth = System.Windows.SystemParameters.WorkArea.Width;
_receiver.WindowApplication.MaxHeight = System.Windows.SystemParameters.WorkArea.Height;
}
else
{
//Secondary monitor
_receiver.WindowApplication.MaxWidth = System.Windows.SystemParameters.VirtualScreenWidth - System.Windows.SystemParameters.WorkArea.Width;
_receiver.WindowApplication.MaxHeight = System.Windows.SystemParameters.VirtualScreenHeight;
}
}
}
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这是一个“中央屏幕 DotNet 4.5解决方案”，使用 系统参数而不是 系统。视窗。窗体或 我的电脑，屏幕: 由于 Windows 8发生了变化的屏幕尺寸计算，它的唯一工作方式为我看起来像(任务栏计算包括在内) :

Private Sub Window_Loaded(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles MyBase.Loaded
Dim BarWidth As Double = SystemParameters.VirtualScreenWidth - SystemParameters.WorkArea.Width
Dim BarHeight As Double = SystemParameters.VirtualScreenHeight - SystemParameters.WorkArea.Height
Me.Left = (SystemParameters.VirtualScreenWidth - Me.ActualWidth - BarWidth) / 2
Me.Top = (SystemParameters.VirtualScreenHeight - Me.ActualHeight - BarHeight) / 2
End Sub

Center Screen WPF XAML

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小心你窗口的比例系数(100%/125%/150%/200%)。 你可以通过下面的代码得到真实的屏幕大小:

SystemParameters.FullPrimaryScreenHeight
SystemParameters.FullPrimaryScreenWidth
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添加一个不使用 WinForms 而是使用 NativeMethod 的解决方案。 首先，您需要定义所需的本机方法。

public static class NativeMethods
{
public const Int32 MONITOR_DEFAULTTOPRIMERTY = 0x00000001;
public const Int32 MONITOR_DEFAULTTONEAREST = 0x00000002;




[DllImport( "user32.dll" )]
public static extern IntPtr MonitorFromWindow( IntPtr handle, Int32 flags );




[DllImport( "user32.dll" )]
public static extern Boolean GetMonitorInfo( IntPtr hMonitor, NativeMonitorInfo lpmi );




[Serializable, StructLayout( LayoutKind.Sequential )]
public struct NativeRectangle
{
public Int32 Left;
public Int32 Top;
public Int32 Right;
public Int32 Bottom;




public NativeRectangle( Int32 left, Int32 top, Int32 right, Int32 bottom )
{
this.Left = left;
this.Top = top;
this.Right = right;
this.Bottom = bottom;
}
}




[StructLayout( LayoutKind.Sequential, CharSet = CharSet.Auto )]
public sealed class NativeMonitorInfo
{
public Int32 Size = Marshal.SizeOf( typeof( NativeMonitorInfo ) );
public NativeRectangle Monitor;
public NativeRectangle Work;
public Int32 Flags;
}
}

然后像这样获取显示器手柄和显示器信息。

        var hwnd = new WindowInteropHelper( this ).EnsureHandle();
var monitor = NativeMethods.MonitorFromWindow( hwnd, NativeMethods.MONITOR_DEFAULTTONEAREST );


if ( monitor != IntPtr.Zero )
{
var monitorInfo = new NativeMonitorInfo();
NativeMethods.GetMonitorInfo( monitor, monitorInfo );


var left = monitorInfo.Monitor.Left;
var top = monitorInfo.Monitor.Top;
var width = ( monitorInfo.Monitor.Right - monitorInfo.Monitor.Left );
var height = ( monitorInfo.Monitor.Bottom - monitorInfo.Monitor.Top );
}
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在 C # winforms 中，我得到了一个起点(当我们有几个监视器/显示器时，一个表单调用另一个表单) ，这个起点是通过以下方法得到的:

private Point get_start_point()
{
return
new Point(Screen.GetBounds(parent_class_with_form.ActiveForm).X,
Screen.GetBounds(parent_class_with_form.ActiveForm).Y
);
}
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WinForms

对于多显示器设置，您还需要帐户的 X 和 Y 位置:

Rectangle activeScreenDimensions = Screen.FromControl(this).Bounds;
this.Size = new Size(activeScreenDimensions.Width + activeScreenDimensions.X, activeScreenDimensions.Height + activeScreenDimensions.Y);
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这个 调试代码应该可以很好地解决这个问题:

您可以研究 荧幕班的属性

使用 屏幕，全屏幕将所有显示放在一个数组或列表中，然后捕获当前显示的索引及其属性。

enter image description here

C # < em > (由 Telerik 从 VB 转换-请仔细检查)

        {
List<Screen> arrAvailableDisplays = new List<Screen>();
List<string> arrDisplayNames = new List<string>();


foreach (Screen Display in Screen.AllScreens)
{
arrAvailableDisplays.Add(Display);
arrDisplayNames.Add(Display.DeviceName);
}


Screen scrCurrentDisplayInfo = Screen.FromControl(this);
string strDeviceName = Screen.FromControl(this).DeviceName;
int idxDevice = arrDisplayNames.IndexOf(strDeviceName);


MessageBox.Show(this, "Number of Displays Found: " + arrAvailableDisplays.Count.ToString() + Constants.vbCrLf + "ID: " + idxDevice.ToString() + Constants.vbCrLf + "Device Name: " + scrCurrentDisplayInfo.DeviceName.ToString + Constants.vbCrLf + "Primary: " + scrCurrentDisplayInfo.Primary.ToString + Constants.vbCrLf + "Bounds: " + scrCurrentDisplayInfo.Bounds.ToString + Constants.vbCrLf + "Working Area: " + scrCurrentDisplayInfo.WorkingArea.ToString + Constants.vbCrLf + "Bits per Pixel: " + scrCurrentDisplayInfo.BitsPerPixel.ToString + Constants.vbCrLf + "Width: " + scrCurrentDisplayInfo.Bounds.Width.ToString + Constants.vbCrLf + "Height: " + scrCurrentDisplayInfo.Bounds.Height.ToString + Constants.vbCrLf + "Work Area Width: " + scrCurrentDisplayInfo.WorkingArea.Width.ToString + Constants.vbCrLf + "Work Area Height: " + scrCurrentDisplayInfo.WorkingArea.Height.ToString, "Current Info for Display '" + scrCurrentDisplayInfo.DeviceName.ToString + "' - ID: " + idxDevice.ToString(), MessageBoxButtons.OK, MessageBoxIcon.Information);
}

VB < em > (原始代码)

 Dim arrAvailableDisplays As New List(Of Screen)()
Dim arrDisplayNames As New List(Of String)()


For Each Display As Screen In Screen.AllScreens
arrAvailableDisplays.Add(Display)
arrDisplayNames.Add(Display.DeviceName)
Next


Dim scrCurrentDisplayInfo As Screen = Screen.FromControl(Me)
Dim strDeviceName As String = Screen.FromControl(Me).DeviceName
Dim idxDevice As Integer = arrDisplayNames.IndexOf(strDeviceName)


MessageBox.Show(Me,
"Number of Displays Found: " + arrAvailableDisplays.Count.ToString & vbCrLf &
"ID: " & idxDevice.ToString + vbCrLf &
"Device Name: " & scrCurrentDisplayInfo.DeviceName.ToString + vbCrLf &
"Primary: " & scrCurrentDisplayInfo.Primary.ToString + vbCrLf &
"Bounds: " & scrCurrentDisplayInfo.Bounds.ToString + vbCrLf &
"Working Area: " & scrCurrentDisplayInfo.WorkingArea.ToString + vbCrLf &
"Bits per Pixel: " & scrCurrentDisplayInfo.BitsPerPixel.ToString + vbCrLf &
"Width: " & scrCurrentDisplayInfo.Bounds.Width.ToString + vbCrLf &
"Height: " & scrCurrentDisplayInfo.Bounds.Height.ToString + vbCrLf &
"Work Area Width: " & scrCurrentDisplayInfo.WorkingArea.Width.ToString + vbCrLf &
"Work Area Height: " & scrCurrentDisplayInfo.WorkingArea.Height.ToString,
"Current Info for Display '" & scrCurrentDisplayInfo.DeviceName.ToString & "' - ID: " & idxDevice.ToString, MessageBoxButtons.OK, MessageBoxIcon.Information)

Screens List

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我知道这是一个古老的问题，但其他人可能会从中得到一些价值

int formWidth = form.Width;
int formHeight = form.Height;
int formTop = form.Top;
int formLeft = form.Left;


Screen screen = Screen.PrimaryScreen;
Rectangle rect = screen.Bounds;
int screenWidth = rect.Width;
int screenHeight = rect.Height;
int screenTop = rect.Top;
int screenLeft = rect.Left;

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