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Behavior.OnMouseDoubleClick Method

Called when any double-click message enters the adorner window of the BehaviorService.

Namespace:  System.Windows.Forms.Design.Behavior
Assembly:  System.Design (in System.Design.dll)

Public Overridable Function OnMouseDoubleClick ( _
	g As Glyph, _
	button As MouseButtons, _
	mouseLoc As Point _
) As Boolean


Type: System.Windows.Forms.Design.Behavior.Glyph

A Glyph.

Type: System.Windows.Forms.MouseButtons

A MouseButtons value indicating which button was clicked.

Type: System.Drawing.Point

The location at which the click occurred.

Return Value

Type: System.Boolean
true if the message was handled; otherwise, false.

The OnMouseDoubleClick method is called when any double-click message enters the WndProc of the adorner window of the BehaviorService. The message is first passed here, to the top-most Behavior in the behavior stack. Returning true from this method signifies that the message was handled by the Behavior and should not continue to be processed. From here, the message is sent to the appropriate behavior.

The following code example demonstrates how to handle a double-click message. For a full code listing, see How to: Extend the Appearance and Behavior of Controls in Design Mode.

' When you double-click on an AnchorGlyph, the value of  
' the control's Anchor property is toggled. 

' Note that the value of the Anchor property is not set 
' by direct assignment. Instead, the  
' PropertyDescriptor.SetValue method is used. This  
' enables notification of the design environment, so  
' related events can be raised, for example, the 
' IComponentChangeService.ComponentChanged event. 
Public Overrides Function OnMouseDoubleClick( _
ByVal g As Glyph, _
ByVal button As MouseButtons, _
ByVal mouseLoc As Point) As Boolean 

    MyBase.OnMouseDoubleClick(g, button, mouseLoc)

    If button = MouseButtons.Left Then 
        Dim ag As AnchorGlyph = g

        Dim pdAnchor As PropertyDescriptor = _

        If ag.IsEnabled Then 
            ' The glyph is enabled.  
            ' Clear the AnchorStyle flag to disable the Glyph.
            pdAnchor.SetValue(ag.relatedControl, _
            ag.relatedControl.Anchor Xor ag.anchorStyle)
            ' The glyph is disabled.  
            ' Set the AnchorStyle flag to enable the Glyph.
            pdAnchor.SetValue(ag.relatedControl, _
            ag.relatedControl.Anchor Or ag.anchorStyle)
        End If 
    End If 

    Return True 

End Function

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0
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