SizeF.Addition(SizeF, SizeF) 運算子

定義

將一個 SizeF 結構的寬度和高度加上另一個 SizeF 結構的寬度和高度。Adds the width and height of one SizeF structure to the width and height of another SizeF structure.

public:
 static System::Drawing::SizeF operator +(System::Drawing::SizeF sz1, System::Drawing::SizeF sz2);
public static System.Drawing.SizeF operator + (System.Drawing.SizeF sz1, System.Drawing.SizeF sz2);
static member ( + ) : System.Drawing.SizeF * System.Drawing.SizeF -> System.Drawing.SizeF
Public Shared Operator + (sz1 As SizeF, sz2 As SizeF) As SizeF

參數

sz1
SizeF

要加的第一個 SizeF 結構。The first SizeF structure to add.

sz2
SizeF

要加的第二個 SizeF 結構。The second SizeF structure to add.

傳回

Size 結構,即加法運算的結果。A Size structure that is the result of the addition operation.

範例

下列ListBox程式碼範例會使用下列成員, 將陰影新增至:The following code example adds a shadow to a ListBox by using the following members:

這個範例是設計來與 Windows Form 搭配使用。This example is designed to be used with a Windows Form. 若要執行此範例, 請將此程式碼貼到窗AddShadow體中, 並在處理Paint表單的事件時呼叫方法。To run this example, paste this code into a form and call the AddShadow method when handling the form's Paint event. 確認表單包含名為ListBox listBox1的。Verify that the form contains a ListBox named listBox1.

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

適用於