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)
When you create a 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.
The following code examples draws lines and text on a PictureBox control.
' 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
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.