MouseEnter event for annotation isn't working

[Tom]

Hi, I can't get the MouseEnter event to fire for an EllipseAnnotation.

Attached is a sample. Run the sample and click the red circle. A popup is displayed with two hyperlinks. What I want is that the popup is displayed when the mouse is hovering over the annotation (via the MouseEnter event) instead. How can this be achieved?

Thank you.

Attachment: sfChartCrossHair_b54617e3.rar

[Muneesh Kumar G]

Hi Tom, 

 

Greetings from Syncfusion, we have analyzed your query and we would like to inform you that we have drawn annotation rendering element using separate shape. So, we have raised below mouse events manually for annotation shape in our source.  

 

1.       MouseRightButtonDown 

2.       MouseRightButtonUp 

3.       MouseUp 

4.       MouseDown 

5.       MouseMove 

6.       MouseLeftButtonDown 

7.       MouseLeftButtonUp 

8.       MouseLeave 

 

Except these events you have to raise other events manually as per the below code snippet.  

 

Code snippet 

Protected Overrides Function ArrangeOverride(finalSize As Size) As Size 

 

        AddHandler AnnotationElement.MouseEnter, AddressOf MouseEnter 

 

        Return MyBase.ArrangeOverride(finalSize) 

    End Function 

 

    Private Sub MouseEnter(sender As Object, e As MouseEventArgs) 

        Console.WriteLine("OnMouseEnter") 

 

        'SET POSITION 

        Dim pt As Point = e.GetPosition(CType(MainWindow.gMain, UIElement)) 

        MainWindow.AnnotationPopup.Placement = Primitives.PlacementMode.RelativePoint 

       .. 

 

        MainWindow.AnnotationPopup.IsOpen = True 

    End Sub 

 

 

    Private Sub CustomEllipseAnnotation_MouseLeave(sender As Object, e As MouseEventArgs) Handles Me.MouseLeave 

        Console.WriteLine("CustomEllipseAnnotation_MouseLeave") 

 

        MainWindow.AnnotationPopup.sp.Children.Clear() 

        MainWindow.AnnotationPopup.IsOpen = False 

 

    End Sub 

 

We have modified your sample based on this, now the sample works fine as per your expect. Please find the sample from the following location.  

 

Sample: http://www.syncfusion.com/downloads/support/forum/141050/ze/sfChartCrossHair-1937345993 

 

Hope it helps.  

 

Regards, 

Muneesh Kumar G.  

 

[Tom]

Brilliant, Muneesh, thank you so much. Now the MouseEnter event for the annotation works. Just a minor detail, I had to move the MouseLeave handling code over to the MouseLeave event of the Popup instead to solve the flickering issue. Now, there are no problems.

[Muneesh Kumar G]

Hi Tom,  

  

Thanks for the update. 

  

We are glad to know that the given solution works. Please let us know if you need any further assistance. 

 

Regards, 

Muneesh Kumar G.