RectangleF.Equality(RectangleF, RectangleF) 运算符

定义

命名空间:

System.Drawing

程序集:

System.Drawing.Primitives.dll

Source:

RectangleF.cs

测试两个 RectangleF 结构的位置和大小是否相同。

public:
 static bool operator ==(System::Drawing::RectangleF left, System::Drawing::RectangleF right);

public static bool operator == (System.Drawing.RectangleF left, System.Drawing.RectangleF right);

static member ( = ) : System.Drawing.RectangleF * System.Drawing.RectangleF -> bool

Public Shared Operator == (left As RectangleF, right As RectangleF) As Boolean

参数

left

RectangleF

相等运算符左侧的 RectangleF 结构。

right

RectangleF

相等运算符右侧的 RectangleF 结构。

返回

Boolean

如果两个指定的 RectangleF 结构具有相等的 X、Y、Width 和 Height 属性值，则返回 true；否则，返回 false。

示例

下面的代码示例演示如何使用 Implicit、 RectangleF 和 Equality 成员。 此示例旨在与 Windows 窗体一起使用。 将此代码粘贴到窗体中，并在处理窗体的 Paint 事件时调用 ConvertRectangleToRectangleF 方法，作为 ePaintEventArgs传递。

private:
   void ConvertRectangleToRectangleF( PaintEventArgs^ e )
   {
      // Create a rectangle.
      Rectangle rectangle1 = Rectangle(30,40,50,100);

      // Convert it to a RectangleF.
      RectangleF convertedRectangle = rectangle1;

      // Create a new RectangleF.
      RectangleF rectangle2 = RectangleF(PointF(30.0F,40.0F),SizeF(50.0F,100.0F));

      // Create a custom, partially transparent brush.
      SolidBrush^ redBrush = gcnew SolidBrush( Color::FromArgb( 40, Color::Red ) );

      // Compare the converted rectangle with the new one.  If they 
      // are equal draw and fill the rectangles on the form.
      if ( convertedRectangle == rectangle2 )
      {
         e->Graphics->FillRectangle( redBrush, rectangle2 );
      }

      // Dispose of the custom brush.
      delete redBrush;
   }
};

private void ConvertRectangleToRectangleF(PaintEventArgs e)
{

    // Create a rectangle.
    Rectangle rectangle1 = new Rectangle(30, 40, 50, 100);

    // Convert it to a RectangleF.
    RectangleF convertedRectangle = rectangle1;

    // Create a new RectangleF.
    RectangleF rectangle2 = new RectangleF(new PointF(30.0F, 40.0F),
        new SizeF(50.0F, 100.0F));

    // Create a custom, partially transparent brush.
    SolidBrush redBrush = new SolidBrush(Color.FromArgb(40, Color.Red));

    // Compare the converted rectangle with the new one.  If they 
    // are equal draw and fill the rectangles on the form.
    if (convertedRectangle == rectangle2)
    {
        e.Graphics.FillRectangle(redBrush, rectangle2);
    }

    // Dispose of the custom brush.
    redBrush.Dispose();
}

Private Sub ConvertRectangleToRectangleF( _
    ByVal e As PaintEventArgs)

    ' Create a rectangle.
    Dim rectangle1 As New Rectangle(30, 40, 50, 100)

    ' Convert it to a RectangleF.
    Dim convertedRectangle As RectangleF = _
        RectangleF.op_Implicit(rectangle1)

    ' Create a new RectangleF.
    Dim rectangle2 As New RectangleF(New PointF(30.0F, 40.0F), _
        New SizeF(50.0F, 100.0F))

    ' Create a custom, partially transparent brush.
    Dim redBrush As New SolidBrush(Color.FromArgb(40, Color.Red))

    ' Compare the converted rectangle with the new one.  If they 
    ' are equal, draw and fill the rectangles on the form.
    If (RectangleF.op_Equality(convertedRectangle, rectangle2)) Then
        e.Graphics.FillRectangle(redBrush, rectangle2)
    End If

    ' Dispose of the custom brush.
    redBrush.Dispose()
End Sub