Screen.FromPoint(Point) 方法

  • 参考

定义

命名空间:
System.Windows.Forms
程序集:
System.Windows.Forms.dll

检索包含指定点的显示器的 Screen。

public:
 static System::Windows::Forms::Screen ^ FromPoint(System::Drawing::Point point);
public static System.Windows.Forms.Screen FromPoint (System.Drawing.Point point);
static member FromPoint : System.Drawing.Point -> System.Windows.Forms.Screen
Public Shared Function FromPoint (point As Point) As Screen

参数

point
Point

指定要在 Point 中检索的位置的 Screen。

返回

Screen

包含该点的显示器的 Screen。 在各显示器都不包含指定点的多显示器环境中，将返回与该点最接近的显示器。

示例

下面的代码示例说明如何使用 FromPoint 方法。 此示例创建一个Point引用 X 由 MouseEventArgs传递的 和 Y 坐标，然后使用 FromPoint 方法确定单击的点是否位于主屏幕上。

private:
   void Form1_MouseDown( Object^ /*sender*/, System::Windows::Forms::MouseEventArgs^ e )
   {
      Point p = Point(e->X,e->Y);
      Screen^ s = Screen::FromPoint( p );
      if ( s->Primary )
      {
         MessageBox::Show( "You clicked the primary screen" );
      }
      else
      {
         MessageBox::Show( "This isn't the primary screen" );
      }

private void Form1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
    Point p = new Point(e.X, e.Y);
    Screen s = Screen.FromPoint(p);
    
if (s.Primary)
{
    MessageBox.Show("You clicked the primary screen");
}
else
{
    MessageBox.Show("This isn't the primary screen");
}

Private Sub Form1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseDown
    Dim p As New System.Drawing.Point(e.X, e.Y)
    Dim s As System.Windows.Forms.Screen = Screen.FromPoint(p)

    If s.Primary = True Then
        MessageBox.Show("You clicked the primary screen")
    Else
        MessageBox.Show("This isn't the primary screen")
    End If
End Sub

适用于

另请参阅