SizeF 建構函式

定義

命名空間:

System.Drawing

組件:

System.Drawing.Primitives.dll

從現有的指定 SizeF 結構，初始化 SizeF 結構的新執行個體。

多載

SizeF(PointF)	從指定的 SizeF 結構，初始化 PointF 結構的新執行個體。
SizeF(SizeF)	從現有的指定 SizeF 結構，初始化 SizeF 結構的新執行個體。
SizeF(Vector2)	從指定的 Vector2，初始化 結構的新實例SizeF。
SizeF(Single, Single)	從指定的維度，初始化 SizeF 結構的新執行個體。

SizeF(PointF)

來源:

SizeF.cs

從指定的 SizeF 結構，初始化 PointF 結構的新執行個體。

public:
 SizeF(System::Drawing::PointF pt);

public SizeF (System.Drawing.PointF pt);

new System.Drawing.SizeF : System.Drawing.PointF -> System.Drawing.SizeF

Public Sub New (pt As PointF)

參數

pt

PointF

PointF 結構，從其中初始化這個 SizeF 結構。

SizeF(SizeF)

來源:

SizeF.cs

從現有的指定 SizeF 結構，初始化 SizeF 結構的新執行個體。

public:
 SizeF(System::Drawing::SizeF size);

public SizeF (System.Drawing.SizeF size);

new System.Drawing.SizeF : System.Drawing.SizeF -> System.Drawing.SizeF

Public Sub New (size As SizeF)

參數

size

SizeF

SizeF 結構，從其中建立新的 SizeF 結構。

SizeF(Vector2)

來源:

SizeF.cs

從指定的 Vector2，初始化 結構的新實例SizeF。

public:
 SizeF(System::Numerics::Vector2 vector);

public SizeF (System.Numerics.Vector2 vector);

new System.Drawing.SizeF : System.Numerics.Vector2 -> System.Drawing.SizeF

Public Sub New (vector As Vector2)

參數

vector

Vector2

來源向量。

SizeF(Single, Single)

來源:

SizeF.cs

從指定的維度，初始化 SizeF 結構的新執行個體。

public:
 SizeF(float width, float height);

public SizeF (float width, float height);

new System.Drawing.SizeF : single * single -> System.Drawing.SizeF

Public Sub New (width As Single, height As Single)

參數

width

Single

新 SizeF 結構的寬度元件。

height

Single

新 SizeF 結構的高度元件。

範例

下列程式代碼範例會使用下列成員將陰影新增至 ListBox ：

• Addition

• PointF.Addition

• SolidBrush

此範例的設計目的是要與 Windows Form 搭配使用。 若要執行此範例，請將此程式代碼貼到窗體中，並在處理表單的事件Paint時呼叫 AddShadow 方法。 確認表單包含 ListBox 名為 listBox1的 。

private:
   void AddShadow( PaintEventArgs^ e )
   {
      // Create two SizeF objects.
      SizeF shadowSize = listBox1->Size;
      SizeF addSize = SizeF(10.5F,20.8F);

      // Add them together and save the result in shadowSize.
      shadowSize = shadowSize + addSize;

      // Get the location of the ListBox and convert it to a PointF.
      PointF shadowLocation = listBox1->Location;

      // Add two points to get a new location.
      shadowLocation = shadowLocation + System::Drawing::Size( 5, 5 );

      // Create a rectangleF. 
      RectangleF rectFToFill = RectangleF(shadowLocation,shadowSize);

      // Create a custom brush using a semi-transparent color, and 
      // then fill in the rectangle.
      Color customColor = Color::FromArgb( 50, Color::Gray );
      SolidBrush^ shadowBrush = gcnew SolidBrush( customColor );
      array<RectangleF>^ temp0 = {rectFToFill};
      e->Graphics->FillRectangles( shadowBrush, temp0 );

      // Dispose of the brush.
      delete shadowBrush;
   }

private void AddShadow(PaintEventArgs e)
{

    // Create two SizeF objects.
    SizeF shadowSize = listBox1.Size;
    SizeF addSize = new SizeF(10.5F, 20.8F);

    // Add them together and save the result in shadowSize.
    shadowSize = shadowSize + addSize;

    // Get the location of the ListBox and convert it to a PointF.
    PointF shadowLocation = listBox1.Location;

    // Add two points to get a new location.
    shadowLocation = shadowLocation + new Size(5, 5);

    // Create a rectangleF. 
    RectangleF rectFToFill = 
        new RectangleF(shadowLocation, shadowSize);

    // Create a custom brush using a semi-transparent color, and 
    // then fill in the rectangle.
    Color customColor = Color.FromArgb(50, Color.Gray);
    SolidBrush shadowBrush = new SolidBrush(customColor);
    e.Graphics.FillRectangles(shadowBrush, new RectangleF[]{rectFToFill});

    // Dispose of the brush.
    shadowBrush.Dispose();
}

Private Sub AddShadow(ByVal e As PaintEventArgs)

    ' Create two SizeF objects.
    Dim shadowSize As SizeF = Size.op_Implicit(listBox1.Size)
    Dim addSize As New SizeF(10.5F, 20.8F)

    ' Add them together and save the result in shadowSize.
    shadowSize = SizeF.op_Addition(shadowSize, addSize)

    ' Get the location of the ListBox and convert it to a PointF.
    Dim shadowLocation As PointF = Point.op_Implicit(listBox1.Location)

    ' Add a Size to the Point to get a new location.
    shadowLocation = PointF.op_Addition(shadowLocation, New Size(5, 5))

    ' Create a rectangleF. 
    Dim rectFToFill As New RectangleF(shadowLocation, shadowSize)

    ' Create a custom brush using a semi-transparent color, and 
    ' then fill in the rectangle.
    Dim customColor As Color = Color.FromArgb(50, Color.Gray)
    Dim shadowBrush As SolidBrush = New SolidBrush(customColor)
    e.Graphics.FillRectangles(shadowBrush, _
        New RectangleF() {rectFToFill})

    ' Dispose of the brush.
    shadowBrush.Dispose()
End Sub