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frankinstien
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DrawLink
May 17th, 2013 at 7:01pm
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Hello,

I have successfully implemented a multi-segmented progess solution from the CustomDraw demo code, it works perfectly! But when I tried to implement the same solution onto a user control the DrawLink event doesn't work. Any insights as to why am having this problem? I do bind the DrawLink event to a handler and do call the diagram invalidate method, but the event never fires.

I'm using Visual Studio 2010, .NET 4.0, Mindfusion 5.6

Frank
  
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Stoyo
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Re: DrawLink
Reply #1 - May 17th, 2013 at 7:04pm
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Hi,

Have you set the links' CustomDraw property in the user control?

Stoyan
  
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frankinstien
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Re: DrawLink
Reply #2 - May 17th, 2013 at 7:36pm
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Stoyan

Thanks for the quick reply. Your suggestion helped some. The DrawLink fires when trying to draw a link but doesn't fire when the diagram invalidate method is called. Any ideas?

Thx in advance.

Frank
  
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Stoyo
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Re: DrawLink
Reply #3 - May 17th, 2013 at 8:49pm
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If you need to repaint background links while drawing or modifying another item, call the RecreateCacheImage method.

I hope that helps,
Stoyan
  
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frankinstien
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Re: DrawLink
Reply #4 - May 17th, 2013 at 10:25pm
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OK, there is a issue with drawings that are not natively drawn in the session. If I draw a link the DrawLink event fires and will fire with an invalidate call as well, but if a mfu file is loaded that wasn't drawn with the customdraw code the DrawLink event never fires. I copied over the properties tag of the diagram's xml file but that didn't change anything. I modified the links from the files that work to what I believe are critical properties:

CustomDraw from false to true
DynamicLink from false to true

What are those files missing?

Frank
  
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Stoyo
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Re: DrawLink
Reply #5 - May 18th, 2013 at 12:25am
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DrawLink is raised only for links whose CustomDraw property is set. If you have some old files that were saved with CustomDraw disabled, you will have to loop over the links and enable it after calling LoadFromXml. If you prefer to edit the properties in the xml file, you will have to set numerical values corresponding to the CustomDraw enumeration, true/false will not work.
  
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frankinstien
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Re: DrawLink
Reply #6 - May 18th, 2013 at 1:56am
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Thanks Stoyan,

I came to the same conclusion of looping thorugh the links, which I have to do anyway.

In any case the Mindfusion library is comming in very handing for this project.

thx again.

Frank
  
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