Point.Subtraction(Point, Size) Operator

Definisi

Ruang nama:

System.Drawing

Rakitan:

System.Drawing.Primitives.dll

Sumber:

Point.cs

Menerjemahkan dengan Point negatif dari yang diberikan Size.

public:
 static System::Drawing::Point operator -(System::Drawing::Point pt, System::Drawing::Size sz);

public static System.Drawing.Point operator - (System.Drawing.Point pt, System.Drawing.Size sz);

static member ( - ) : System.Drawing.Point * System.Drawing.Size -> System.Drawing.Point

Public Shared Operator - (pt As Point, sz As Size) As Point

Parameter

pt

Point

yang akan diterjemahkan Point .

sz

Size

Size yang menentukan pasangan angka untuk dikurangi dari koordinat pt.

Mengembalikan

Point

Point Struktur yang diterjemahkan oleh negatif dari struktur tertentuSize.

Contoh

Contoh kode berikut menunjukkan cara menggunakan PointConverter operator dan Subtraction . Contoh ini dirancang untuk digunakan dengan Formulir Windows. Tempelkan kode ini ke dalam formulir dan panggil ShowPointConverter metode saat menangani peristiwa formulir Paint , meneruskan e sebagai PaintEventArgs.

void ShowPointConverter( PaintEventArgs^ e )
{
   // Create the PointConverter.
   System::ComponentModel::TypeConverter^ converter = System::ComponentModel::TypeDescriptor::GetConverter( Point::typeid );
   Point point1 =  *dynamic_cast<Point^>(converter->ConvertFromString( "200, 200" ));

   // Use the subtraction operator to get a second point.
   Point point2 = point1 - System::Drawing::Size( 190, 190 );

   // Draw a line between the two points.
   e->Graphics->DrawLine( Pens::Black, point1, point2 );
}

private void ShowPointConverter(PaintEventArgs e)
{

    // Create the PointConverter.
    System.ComponentModel.TypeConverter converter = 
        System.ComponentModel.TypeDescriptor.GetConverter(typeof(Point));

    Point point1 = (Point) converter.ConvertFromString("200, 200");

    // Use the subtraction operator to get a second point.
    Point point2 = point1 - new Size(190, 190);

    // Draw a line between the two points.
    e.Graphics.DrawLine(Pens.Black, point1, point2);
}

Private Sub ShowPointConverter(ByVal e As PaintEventArgs)

    ' Create the PointConverter.
    Dim converter As System.ComponentModel.TypeConverter = _
        System.ComponentModel.TypeDescriptor.GetConverter(GetType(Point))

    Dim point1 As Point = _
        CType(converter.ConvertFromString("200, 200"), Point)

    ' Use the subtraction operator to get a second point.
    Dim point2 As Point = Point.op_Subtraction(point1, _
        New Size(190, 190))

    ' Draw a line between the two points.
    e.Graphics.DrawLine(Pens.Black, point1, point2)
End Sub