Graphics.DrawLine Graphics.DrawLine Graphics.DrawLine Method

Definizione

Disegna una linea che connette i due punti specificati dalle coppie di coordinate.Draws a line connecting the two points specified by the coordinate pairs.

Overload

DrawLine(Pen, PointF, PointF) DrawLine(Pen, PointF, PointF) DrawLine(Pen, PointF, PointF)

Disegna una linea che connette due strutture PointF.Draws a line connecting two PointF structures.

DrawLine(Pen, Int32, Int32, Int32, Int32) DrawLine(Pen, Int32, Int32, Int32, Int32) DrawLine(Pen, Int32, Int32, Int32, Int32)

Disegna una linea che connette i due punti specificati dalle coppie di coordinate.Draws a line connecting the two points specified by the coordinate pairs.

DrawLine(Pen, Single, Single, Single, Single) DrawLine(Pen, Single, Single, Single, Single) DrawLine(Pen, Single, Single, Single, Single)

Disegna una linea che connette i due punti specificati dalle coppie di coordinate.Draws a line connecting the two points specified by the coordinate pairs.

DrawLine(Pen, Point, Point) DrawLine(Pen, Point, Point) DrawLine(Pen, Point, Point)

Disegna una linea che connette due strutture Point.Draws a line connecting two Point structures.

DrawLine(Pen, PointF, PointF) DrawLine(Pen, PointF, PointF) DrawLine(Pen, PointF, PointF)

Disegna una linea che connette due strutture PointF.Draws a line connecting two PointF structures.

public:
 void DrawLine(System::Drawing::Pen ^ pen, System::Drawing::PointF pt1, System::Drawing::PointF pt2);
public void DrawLine (System.Drawing.Pen pen, System.Drawing.PointF pt1, System.Drawing.PointF pt2);
member this.DrawLine : System.Drawing.Pen * System.Drawing.PointF * System.Drawing.PointF -> unit

Parametri

pen
Pen Pen Pen

Oggetto Pen che determina il colore, la larghezza e lo stile della linea.Pen that determines the color, width, and style of the line.

pt1
PointF PointF PointF

Struttura PointF che rappresenta il primo punto da connettere.PointF structure that represents the first point to connect.

pt2
PointF PointF PointF

Struttura PointF che rappresenta il secondo punto da connettere.PointF structure that represents the second point to connect.

Eccezioni

Esempi

L'esempio di codice seguente è progettato per l'uso con Windows Forms e richiede PaintEventArgs e, che Paint è un parametro del gestore eventi.The following code example is designed for use with Windows Forms, and it requires PaintEventArgse, which is a parameter of the Paint event handler. Nel codice vengono eseguite le seguenti azioni:The code performs the following actions:

  • Crea una penna nera.Creates a black pen.

  • Crea punti per gli endpoint della linea.Creates points for the endpoints of the line.

  • Disegna la riga sullo schermo.Draws the line to the screen.

public:
   void DrawLinePointF( PaintEventArgs^ e )
   {

      // Create pen.
      Pen^ blackPen = gcnew Pen( Color::Black,3.0f );
      
      // Create points that define line.
      PointF point1 = PointF(100.0F,100.0F);
      PointF point2 = PointF(500.0F,100.0F);

      // Draw line to screen.
      e->Graphics->DrawLine( blackPen, point1, point2 );
   }
public void DrawLinePointF(PaintEventArgs e)
{
             
    // Create pen.
    Pen blackPen = new Pen(Color.Black, 3);
             
    // Create points that define line.
    PointF point1 = new PointF(100.0F, 100.0F);
    PointF point2 = new PointF(500.0F, 100.0F);
             
    // Draw line to screen.
    e.Graphics.DrawLine(blackPen, point1, point2);
}
Public Sub DrawLinePointF(ByVal e As PaintEventArgs)

    ' Create pen.
    Dim blackPen As New Pen(Color.Black, 3)

    ' Create points that define line.
    Dim point1 As New PointF(100.0F, 100.0F)
    Dim point2 As New PointF(500.0F, 100.0F)

    ' Draw line to screen.
    e.Graphics.DrawLine(blackPen, point1, point2)
End Sub

Commenti

Questo metodo disegna una linea pt1 che connette i due punti specificati dai parametri e p.2This method draws a line connecting the two points specified by the pt1 and p2 parameters.

Vedi anche

DrawLine(Pen, Int32, Int32, Int32, Int32) DrawLine(Pen, Int32, Int32, Int32, Int32) DrawLine(Pen, Int32, Int32, Int32, Int32)

Disegna una linea che connette i due punti specificati dalle coppie di coordinate.Draws a line connecting the two points specified by the coordinate pairs.

public:
 void DrawLine(System::Drawing::Pen ^ pen, int x1, int y1, int x2, int y2);
public void DrawLine (System.Drawing.Pen pen, int x1, int y1, int x2, int y2);
member this.DrawLine : System.Drawing.Pen * int * int * int * int -> unit

Parametri

pen
Pen Pen Pen

Oggetto Pen che determina il colore, la larghezza e lo stile della linea.Pen that determines the color, width, and style of the line.

x1
Int32 Int32 Int32

Coordinata x del primo punto.The x-coordinate of the first point.

y1
Int32 Int32 Int32

Coordinata y del primo punto.The y-coordinate of the first point.

x2
Int32 Int32 Int32

Coordinata x del secondo punto.The x-coordinate of the second point.

y2
Int32 Int32 Int32

Coordinata y del secondo punto.The y-coordinate of the second point.

Eccezioni

Esempi

L'esempio di codice seguente è progettato per l'uso con Windows Forms e richiede PaintEventArgs e, che Paint è un parametro del gestore eventi.The following code example is designed for use with Windows Forms, and it requires PaintEventArgse, which is a parameter of the Paint event handler. Nel codice vengono eseguite le seguenti azioni:The code performs the following actions:

  • Crea una penna nera.Creates a black pen.

  • Crea le coordinate degli endpoint della linea.Creates the coordinates of the endpoints of the line.

  • Disegna la riga sullo schermo.Draws the line to the screen.

public:
   void DrawLineInt( PaintEventArgs^ e )
   {
      // Create pen.
      Pen^ blackPen = gcnew Pen( Color::Black,3.0f );

      // Create coordinates of points that define line.
      int x1 = 100;
      int y1 = 100;
      int x2 = 500;
      int y2 = 100;

      // Draw line to screen.
      e->Graphics->DrawLine( blackPen, x1, y1, x2, y2 );
   }
public void DrawLineInt(PaintEventArgs e)
{
             
    // Create pen.
    Pen blackPen = new Pen(Color.Black, 3);
             
    // Create coordinates of points that define line.
    int x1 = 100;
    int y1 = 100;
    int x2 = 500;
    int y2 = 100;
             
    // Draw line to screen.
    e.Graphics.DrawLine(blackPen, x1, y1, x2, y2);
}
Public Sub DrawLineInt(ByVal e As PaintEventArgs)

    ' Create pen.
    Dim blackPen As New Pen(Color.Black, 3)

    ' Create coordinates of points that define line.
    Dim x1 As Integer = 100
    Dim y1 As Integer = 100
    Dim x2 As Integer = 500
    Dim y2 As Integer = 100

    ' Draw line to screen.
    e.Graphics.DrawLine(blackPen, x1, y1, x2, y2)
End Sub

Commenti

Questo metodo disegna una linea che connette i due punti specificati dai x1parametri y1, x2, e y2 .This method draws a line connecting the two points specified by the x1, y1, x2, and y2 parameters.

Vedi anche

DrawLine(Pen, Single, Single, Single, Single) DrawLine(Pen, Single, Single, Single, Single) DrawLine(Pen, Single, Single, Single, Single)

Disegna una linea che connette i due punti specificati dalle coppie di coordinate.Draws a line connecting the two points specified by the coordinate pairs.

public:
 void DrawLine(System::Drawing::Pen ^ pen, float x1, float y1, float x2, float y2);
public void DrawLine (System.Drawing.Pen pen, float x1, float y1, float x2, float y2);
member this.DrawLine : System.Drawing.Pen * single * single * single * single -> unit

Parametri

pen
Pen Pen Pen

Oggetto Pen che determina il colore, la larghezza e lo stile della linea.Pen that determines the color, width, and style of the line.

x1
Single Single Single

Coordinata x del primo punto.The x-coordinate of the first point.

y1
Single Single Single

Coordinata y del primo punto.The y-coordinate of the first point.

x2
Single Single Single

Coordinata x del secondo punto.The x-coordinate of the second point.

y2
Single Single Single

Coordinata y del secondo punto.The y-coordinate of the second point.

Eccezioni

Esempi

L'esempio di codice seguente è progettato per l'uso con Windows Forms e richiede PaintEventArgs e, che Paint è un parametro del gestore eventi.The following code example is designed for use with Windows Forms, and it requires PaintEventArgse, which is a parameter of the Paint event handler. Nel codice vengono eseguite le seguenti azioni:The code performs the following actions:

  • Crea una penna nera.Creates a black pen.

  • Crea le coordinate degli endpoint della linea.Creates the coordinates of the endpoints of the line.

  • Disegna la riga sullo schermo.Draws the line to the screen.

public:
   void DrawLineFloat( PaintEventArgs^ e )
   {
      // Create pen.
      Pen^ blackPen = gcnew Pen( Color::Black,3.0f );

      // Create coordinates of points that define line.
      float x1 = 100.0F;
      float y1 = 100.0F;
      float x2 = 500.0F;
      float y2 = 100.0F;

      // Draw line to screen.
      e->Graphics->DrawLine( blackPen, x1, y1, x2, y2 );
   }
public void DrawLineFloat(PaintEventArgs e)
{
             
    // Create pen.
    Pen blackPen = new Pen(Color.Black, 3);
             
    // Create coordinates of points that define line.
    float x1 = 100.0F;
    float y1 = 100.0F;
    float x2 = 500.0F;
    float y2 = 100.0F;
             
    // Draw line to screen.
    e.Graphics.DrawLine(blackPen, x1, y1, x2, y2);
}
Public Sub DrawLineFloat(ByVal e As PaintEventArgs)

    ' Create pen.
    Dim blackPen As New Pen(Color.Black, 3)

    ' Create coordinates of points that define line.
    Dim x1 As Single = 100.0F
    Dim y1 As Single = 100.0F
    Dim x2 As Single = 500.0F
    Dim y2 As Single = 100.0F

    ' Draw line to screen.
    e.Graphics.DrawLine(blackPen, x1, y1, x2, y2)
End Sub

Commenti

Questo metodo disegna una linea che connette i due punti specificati dai x1parametri y1, x2, e y2 .This method draws a line connecting the two points specified by the x1, y1, x2, and y2 parameters.

Vedi anche

DrawLine(Pen, Point, Point) DrawLine(Pen, Point, Point) DrawLine(Pen, Point, Point)

Disegna una linea che connette due strutture Point.Draws a line connecting two Point structures.

public:
 void DrawLine(System::Drawing::Pen ^ pen, System::Drawing::Point pt1, System::Drawing::Point pt2);
public void DrawLine (System.Drawing.Pen pen, System.Drawing.Point pt1, System.Drawing.Point pt2);
member this.DrawLine : System.Drawing.Pen * System.Drawing.Point * System.Drawing.Point -> unit

Parametri

pen
Pen Pen Pen

Oggetto Pen che determina il colore, la larghezza e lo stile della linea.Pen that determines the color, width, and style of the line.

pt1
Point Point Point

Struttura Point che rappresenta il primo punto da connettere.Point structure that represents the first point to connect.

pt2
Point Point Point

Struttura Point che rappresenta il secondo punto da connettere.Point structure that represents the second point to connect.

Eccezioni

Esempi

L'esempio di codice seguente è progettato per l'uso con Windows Forms e richiede PaintEventArgs e, che Paint è un parametro del gestore eventi.The following code example is designed for use with Windows Forms, and it requires PaintEventArgse, which is a parameter of the Paint event handler. Nel codice vengono eseguite le seguenti azioni:The code performs the following actions:

  • Crea una penna nera.Creates a black pen.

  • Crea punti per gli endpoint della linea.Creates points for the endpoints of the line.

  • Disegna la riga sullo schermo.Draws the line to the screen.

public:
   void DrawLinePoint( PaintEventArgs^ e )
   {
      // Create pen.
      Pen^ blackPen = gcnew Pen( Color::Black,3.0f );

      // Create points that define line.
      Point point1 = Point(100,100);
      Point point2 = Point(500,100);

      // Draw line to screen.
      e->Graphics->DrawLine( blackPen, point1, point2 );
   }
public void DrawLinePoint(PaintEventArgs e)
{
             
    // Create pen.
    Pen blackPen = new Pen(Color.Black, 3);
             
    // Create points that define line.
    Point point1 = new Point(100, 100);
    Point point2 = new Point(500, 100);
             
    // Draw line to screen.
    e.Graphics.DrawLine(blackPen, point1, point2);
}
Public Sub DrawLinePoint(ByVal e As PaintEventArgs)

    ' Create pen.
    Dim blackPen As New Pen(Color.Black, 3)

    ' Create points that define line.
    Dim point1 As New Point(100, 100)
    Dim point2 As New Point(500, 100)

    ' Draw line to screen.
    e.Graphics.DrawLine(blackPen, point1, point2)
End Sub
Vedi anche

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