Point.Explicit(Point to Size) 操作员

定义

将指定的 Point 结构转换为 Size 结构。Converts the specified Point structure to a Size structure.

public:
 static explicit operator System::Drawing::Size(System::Drawing::Point p);
public static explicit operator System.Drawing.Size (System.Drawing.Point p);
static member op_Explicit : System.Drawing.Point -> System.Drawing.Size
Public Shared Narrowing Operator CType (p As Point) As Size

参数

p
Point

要转换的 PointThe Point to be converted.

返回

此转换得到的 SizeThe Size that results from the conversion.

示例

下面的代码示例使用为这些类型定义的多个重载运算符来创建点和大小。The following code example creates points and sizes using several of the overloaded operators defined for these types. 它还演示了如何使用SystemPens类。It also demonstrates how to use the SystemPens class.

此示例旨在与 Windows 窗体一起使用。This example is designed to be used with Windows Forms. 创建一个包含Button名为subtractButton的窗体。Create a form that contains a Button named subtractButton. 将代码粘贴到窗体中, 并CreatePointsAndSizes从窗体的Paint事件处理方法中调用方法, ePaintEventArgs将作为传递。Paste the code into the form and call the CreatePointsAndSizes method from the form's Paint event-handling method, passing e as PaintEventArgs.

void CreatePointsAndSizes( PaintEventArgs^ e )
{
   // Create the starting point.
   Point startPoint = Point(subtractButton->Size);
   
   // Use the addition operator to get the end point.
   Point endPoint = startPoint + System::Drawing::Size( 140, 150 );
   
   // Draw a line between the points.
   e->Graphics->DrawLine( SystemPens::Highlight, startPoint, endPoint );
   
   // Convert the starting point to a size and compare it to the
   // subtractButton size.  
   System::Drawing::Size buttonSize = (System::Drawing::Size)startPoint;
   if ( buttonSize == subtractButton->Size )
   {
      e->Graphics->DrawString( "The sizes are equal.", gcnew System::Drawing::Font( this->Font,FontStyle::Italic ), Brushes::Indigo, 10.0F, 65.0F );
   }
}
private void CreatePointsAndSizes(PaintEventArgs e)
{

    // Create the starting point.
    Point startPoint = new Point(subtractButton.Size);

    // Use the addition operator to get the end point.
    Point endPoint = startPoint + new Size(140, 150);

    // Draw a line between the points.
    e.Graphics.DrawLine(SystemPens.Highlight, startPoint, endPoint);

    // Convert the starting point to a size and compare it to the
    // subtractButton size.  
    Size buttonSize = (Size)startPoint;
    if (buttonSize == subtractButton.Size)

        // If the sizes are equal, tell the user.
    {
        e.Graphics.DrawString("The sizes are equal.", 
            new Font(this.Font, FontStyle.Italic), 
            Brushes.Indigo, 10.0F, 65.0F);
    }

}
Private Sub CreatePointsAndSizes(ByVal e As PaintEventArgs)

    ' Create the starting point.
    Dim startPoint As New Point(subtractButton.Size)

    ' Use the addition operator to get the end point.
    Dim endPoint As Point = Point.op_Addition(startPoint, _
        New Size(140, 150))

    ' Draw a line between the points.
    e.Graphics.DrawLine(SystemPens.Highlight, startPoint, endPoint)

    ' Convert the starting point to a size and compare it to the
    ' subtractButton size.  
    Dim buttonSize As Size = Point.op_Explicit(startPoint)
    If (Size.op_Equality(buttonSize, subtractButton.Size)) Then

        ' If the sizes are equal, tell the user.
        e.Graphics.DrawString("The sizes are equal.", _
            New Font(Me.Font, FontStyle.Italic), _
            Brushes.Indigo, 10.0F, 65.0F)
    End If

End Sub

适用于