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Avoid create headers on user interaction (Read 3077 times)

Gabriel YaBB Newbies Offline I Love MindFusion! Posts: 30 Joined: Oct 9^th, 2012	Avoid create headers on user interaction May 21^st, 2013 at 9:08am	Print Post
	Hello, I have a flowchart with the enable grid feature on. When the user clicks& drag on the edge of a header the header is resized. When the user crt-clicks& drag on the edge of a header a new header is created. How can avoid the last behavior? I want that the ctrl-clicks on the header does nothing. Thank you in advance Regardas Gabriel Pulido


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Meppy God Member Offline MindFusion support Posts: 1783 Joined: Jul 20^th, 2005	Re: Avoid create headers on user interaction Reply #1 - May 21^st, 2013 at 9:33am	Print Post
	Hi, The only way to "prevent" this is by handling the LaneGrid.HeaderAdded event and manually removing the newly added header from the grid. The code below illustrates how to do this in the case when the grid contains only a single level of headers. If your grid contains more than one level of headers, you have to recursively search for the newly created header and remove it from its parent. Code if (e.Header.IsRowHeader) diagram.LaneGrid.RowHeaders.Remove(e.Header); else diagram.LaneGrid.ColumnHeaders.Remove(e.Header); We will consider adding a property that disables this functionality for the next release. Regards, Meppy


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Gabriel YaBB Newbies Offline I Love MindFusion! Posts: 30 Joined: Oct 9^th, 2012	Re: Avoid create headers on user interaction Reply #2 - May 21^st, 2013 at 10:04am	Print Post
	Thank you, That was my first aproach but it wasn't working on headers with parents, now I know why It would be great if we can just avoid the functionallity as it is a little odd to allow and remove... Thank you again Gabriel


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Gabriel YaBB Newbies Offline I Love MindFusion! Posts: 30 Joined: Oct 9^th, 2012	Re: Avoid create headers on user interaction Reply #3 - May 21^st, 2013 at 10:09am	Print Post
	Just another question, What is the best way to traverse the Headers jerarquy to remove the newly added header? Gabriel


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Meppy God Member Offline MindFusion support Posts: 1783 Joined: Jul 20^th, 2005	Re: Avoid create headers on user interaction Reply #4 - May 21^st, 2013 at 10:45am	Print Post
	This is the shortest one I can think of: Code Header parent = diagram1.LaneGrid.GetHeaderParent(e.Header); if (parent != null) { parent.SubHeaders.Remove(e.Header); } else { if (e.Header.IsRowHeader) diagram1.LaneGrid.RowHeaders.Remove(e.Header); else diagram1.LaneGrid.ColumnHeaders.Remove(e.Header); } GetHeaderParent will return null for top-level headers, so you still have to rely on the previous code. Regards, Meppy


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