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Tradução
Original
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Delegado PaintEventHandler
Assembly: System.Windows.Forms (em System.Windows.Forms.dll)
Parâmetros
- sender
- Tipo: System.Object
fonte do evento.
- e
- Tipo: System.Windows.Forms.PaintEventArgs
A PaintEventArgs que contém os dados do evento.
Quando você cria um PaintEventHandler delegado, você identifica o método que manipulará o evento. Para associar o evento com o manipulador de eventos, adicione uma instância do delegate ao evento. O manipulador de evento é chamado sempre que o evento ocorre, a menos que você remova o delegate. Para obter mais informações sobre tratamento eventos com delegados, consulte Eventos e representantes.
Os exemplos de código a seguir desenha linhas e texto em um PictureBox controle.
// This example creates a PictureBox control on the form and draws to it.// This example assumes that the Form_Load event handler method is// connected to the Load event of the form.private PictureBox pictureBox1 = new PictureBox(); privatevoid Form1_Load(object sender, System.EventArgs e) { // Dock the PictureBox to the form and set its background to white. pictureBox1.Dock = DockStyle.Fill; pictureBox1.BackColor = Color.White; // Connect the Paint event of the PictureBox to the event handler method. pictureBox1.Paint += new System.Windows.Forms.PaintEventHandler(this.pictureBox1_Paint); // Add the PictureBox control to the Form.this.Controls.Add(pictureBox1); } privatevoid pictureBox1_Paint(object sender, System.Windows.Forms.PaintEventArgs e) { // Create a local version of the graphics object for the PictureBox. Graphics g = e.Graphics; // Draw a string on the PictureBox. g.DrawString("This is a diagonal line drawn on the control", new Font("Arial",10), System.Drawing.Brushes.Blue, new Point(30,30)); // Draw a line in the PictureBox. g.DrawLine(System.Drawing.Pens.Red, pictureBox1.Left, pictureBox1.Top, pictureBox1.Right, pictureBox1.Bottom); }
// This example creates a PictureBox control on the form and draws to it.
// This example assumes that the Form_Load event handler method is
// connected to the Load event of the form.
private PictureBox pictureBox1 = new PictureBox();
private void Form1_Load(Object sender, System.EventArgs e)
{
// Dock the PictureBox to the form and set its background to white.
pictureBox1.set_Dock(DockStyle.Fill);
pictureBox1.set_BackColor(Color.get_White());
// Connect the Paint event of the PictureBox to the event handler
// method.
pictureBox1.add_Paint(new System.Windows.Forms.PaintEventHandler(this.
pictureBox1_Paint));
// Add the PictureBox control to the Form.
this.get_Controls().Add(pictureBox1);
} //Form1_Load
private void pictureBox1_Paint(Object sender,
System.Windows.Forms.PaintEventArgs e)
{
// Create a local version of the graphics object for the PictureBox.
Graphics g = e.get_Graphics();
// Draw a string on the PictureBox.
g.DrawString("This is a diagonal line drawn on the control",
new Font("Arial", 10), System.Drawing.Brushes.get_Blue(),
(PointF)new PointF(30, 30));
// Draw a line in the PictureBox.
g.DrawLine(System.Drawing.Pens.get_Red(), pictureBox1.get_Left(),
pictureBox1.get_Top(), pictureBox1.get_Right(),
pictureBox1.get_Bottom());
} //pictureBox1_Paint
Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC
o.NET Framework e.NET Compact Framework não oferecem suporte a todas as versões de cada plataforma. Para obter uma lista de versões suportadas, consulte Requisitos de sistema do .NET framework.