Behavior Class
Represents the Behavior objects that are managed by a BehaviorService.
Assembly: System.Design (in System.Design.dll)
This class can be extended to develop any type of user interface behavior, including selection, drag, and resize behaviors.
For more information, see Behavior Service Overview.
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Your Behavior type must be associated with a Glyph type. Glyph-independent behaviors are not supported. |
The following code example demonstrates how to create your own class based on the Behavior class that responds to user clicks. This code example is part of a larger example provided for the BehaviorService class.
Class MyGlyph Inherits Glyph Private control As Control Private behaviorSvc As _ System.Windows.Forms.Design.Behavior.BehaviorService Public Sub New(ByVal behaviorSvc As _ System.Windows.Forms.Design.Behavior.BehaviorService, _ ByVal control As Control) MyBase.New(New MyBehavior()) Me.behaviorSvc = behaviorSvc Me.control = control End Sub Public Overrides ReadOnly Property Bounds() As Rectangle Get ' Create a glyph that is 10x10 and sitting ' in the middle of the control. Glyph coordinates ' are in adorner window coordinates, so we must map ' using the behavior service. Dim edge As Point = behaviorSvc.ControlToAdornerWindow(control) Dim size As Size = control.Size Dim center As New Point(edge.X + size.Width / 2, edge.Y + _ size.Height / 2) Dim bounds1 As New Rectangle(center.X - 5, center.Y - 5, 10, 10) Return bounds1 End Get End Property Public Overrides Function GetHitTest(ByVal p As Point) As Cursor ' GetHitTest is called to see if the point is ' within this glyph. This gives us a chance to decide ' what cursor to show. Returning null from here means ' the mouse pointer is not currently inside of the glyph. ' Returning a valid cursor here indicates the pointer is ' inside the glyph,and also enables our Behavior property ' as the active behavior. If Bounds.Contains(p) Then Return Cursors.Hand End If Return Nothing End Function Public Overrides Sub Paint(ByVal pe As PaintEventArgs) ' Draw our glyph. It is simply a blue ellipse. pe.Graphics.FillEllipse(Brushes.Blue, Bounds) End Sub ' By providing our own behavior we can do something interesting ' when the user clicks or manipulates our glyph. Class MyBehavior Inherits System.Windows.Forms.Design.Behavior.Behavior Public Overrides Function OnMouseUp(ByVal g As Glyph, _ ByVal button As MouseButtons) As Boolean MessageBox.Show("Hey, you clicked the mouse here") Return True ' indicating we processed this event. End Function 'OnMouseUp End Class End Class
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
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.
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