"Walter Wang [MSFT]" <wawang@online.microsoft.com> wrote in message
news:wJN8kXMJHHA.2080@TK2MSFTNGHUB02.phx.gbl...
> Hi,
>
> I'm not sure if you're referring to System.Windows.Shaps.Rectangle:
>
> #Rectangle Class (System.Windows.Shapes)
> http://msdn2.microsoft.com/en-us/library/system.windows.shapes.rectangle.asp
> x
>
> This class cannot be inherited. It's actually only a special Shape:
>
> #Shape Class (System.Windows.Shapes)
> http://msdn2.microsoft.com/en-us/library/system.windows.shapes.shape.aspx
> Provides a base class for shape elements, such as Ellipse, Polygon, and
> Rectangle. This class is abstract.
>
> The ultimate base class of them is the UIElement class:
>
> #UIElement Class (System.Windows)
> http://msdn2.microsoft.com/en-us/library/system.windows.uielement.aspx
> UIElement is a base class for WPF core level implementations building on
> Windows Presentation Foundation (WPF) elements and basic presentation
> characteristics.
>
>
> To create a visio like application, you need to manage many objects of
> type
> UIElement, not a specific type Rectangle.
>
> I suggest you start with following example:
>
> #Dragging Elements in a Canvas - The Code Project - Windows Presentation
> Foundation
> http://www.codeproject.com/WPF/DraggingElementsInCanvas.asp
>
> Then choose relevant samples from:
>
> #Download details: Windows SDK .NET Framework 3.0 Samples
> http://www.microsoft.com/downloads/details.aspx?FamilyID=22b58b6c-8f98-40d0-
> 880d-c3339c5da01e&displaylang=en
>
>
> Hope this helps.
>
> Sincerely,
> Walter Wang (wawang@online.microsoft.com, remove 'online.')
> Microsoft Online Community Support
>
> ==================================================
> Get notification to my posts through email? Please refer to
> http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif
> ications. If you are using Outlook Express, please make sure you clear the
> check box "Tools/Options/Read: Get 300 headers at a time" to see your
> reply
> promptly.
>
> Note: The MSDN Managed Newsgroup support offering is for non-urgent issues
> where an initial response from the community or a Microsoft Support
> Engineer within 1 business day is acceptable. Please note that each follow
> up response may take approximately 2 business days as the support
> professional working with you may need further investigation to reach the
> most efficient resolution. The offering is not appropriate for situations
> that require urgent, real-time or phone-based interactions or complex
> project analysis and dump analysis issues. Issues of this nature are best
> handled working with a dedicated Microsoft Support Engineer by contacting
> Microsoft Customer Support Services (CSS) at
> http://msdn.microsoft.com/subscriptions/support/default.aspx.
> ==================================================
>
> This posting is provided "AS IS" with no warranties, and confers no
> rights.
>

"Walter Wang [MSFT]" <wawang@online.microsoft.com> wrote in message
news:fPJy6JaJHHA.2080@TK2MSFTNGHUB02.phx.gbl...
> Hi,
>
> I think Josh Smith's DragCanvasDemo should be really be useful for a visio
> like application.
>
> Based on my understanding, as you described in your first message, you
> want
> to create a custom rectangle to store the connection points used to
> connect
> different rectangles. I don't think create a custom shape or rectangle is
> the best way to do.
>
> In WPF, such properties can be implemented using Attached Properties.
> Taking the DragCanvasDemo for example, the CanBeDragged property you're
> seeing attached to each UIElement is actually defined the the
> container--the customized Canvas here. I think you can also define other
> Attached Properties in the Canvas object and all the contained UIElement
> objects can have these attached properties to store various settings. You
> don't have to inherit from Shape to create a customized element.
>
> I think the DragCanvasDemo example and Josh's another example on drawing a
> line between movable elements will be useful for you:
>
> #Drawing a Line Between Movable Elements
> http://www.infusionblogs.com/blogs/jsmith/archive/2006/11/28/7069.aspx
>
> For more information on Attached Properties and Dependency Properties,
> please refer to MSDN documentation:
>
> #Properties
> http://msdn2.microsoft.com/en-us/library/ms753192.aspx
>
>
> Also, these blogs might be helpful for you to understand Attached
> Properties:
>
> #Josh Smith on WPF : Attached Properties
> http://www.infusionblogs.com/blogs/jsmith/archive/2006/07/07/638.aspx
>
> #Nick on WPF/E : Attached properties
> http://blogs.msdn.com/nickkramer/archive/2005/08/25/456024.aspx
>
>
> Hope this helps.
>
> Regards,
> Walter Wang (wawang@online.microsoft.com, remove 'online.')
> Microsoft Online Community Support
>
> ==================================================
> When responding to posts, please "Reply to Group" via your newsreader so
> that others may learn and benefit from your issue.
> ==================================================
>
> This posting is provided "AS IS" with no warranties, and confers no
> rights.
>
>