PaintEventHandler Delegate
Assembly: System.Windows.Forms (in system.windows.forms.dll)
'Declaration Public Delegate Sub PaintEventHandler ( _ sender As Object, _ e As PaintEventArgs _ ) 'Usage Dim instance As New PaintEventHandler(AddressOf HandlerMethod)
/** @delegate */ public delegate void PaintEventHandler ( Object sender, PaintEventArgs e )
JScript supports the use of delegates, but not the declaration of new ones.
Parameters
- sender
The source of the event.
- e
A PaintEventArgs that contains the event data.
When you create a PaintEventHandler delegate, you identify the method that will handle the event. To associate the event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, unless you remove the delegate. For more information about handling events with delegates, see Events and Delegates.
' 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 pictureBox1 As New PictureBox() Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load ' 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. AddHandler pictureBox1.Paint, AddressOf Me.pictureBox1_Paint ' Add the PictureBox control to the Form. Me.Controls.Add(pictureBox1) End Sub 'Form1_Load Private Sub pictureBox1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) ' Create a local version of the graphics object for the PictureBox. Dim g As Graphics = e.Graphics ' Draw a string on the PictureBox. g.DrawString("This is a diagonal line drawn on the control", _ New Font("Arial", 10), Brushes.Red, New PointF(30.0F, 30.0F)) ' Draw a line in the PictureBox. g.DrawLine(System.Drawing.Pens.Red, pictureBox1.Left, _ pictureBox1.Top, pictureBox1.Right, pictureBox1.Bottom) End Sub 'pictureBox1_Paint
// 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 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.