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Tree/TreeViewer: How to detect a click into the icon without selecting the TreeItem [message #546555]

Tue, 13 July 2010 11:16

Stefan Muller Arisona

Messages: 3
Registered: July 2009

Junior Member

Hello,

I have a SWT Tree and use a MouseListener to detect clicks into the icons of individual TreeItems.

First, is there a better way than to use a MouseListener to detect icon clicks?

Second, is there a way, to detect clicks on a TreeItem's icon without having it automatically selected (I tried with event.doit and similar stuff, without an effect)?

Thanks,
/Stefan

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Re: Tree/TreeViewer: How to detect a click into the icon without selecting the TreeItem [message #547105 is a reply to message #546555]

Thu, 15 July 2010 14:28

Grant Gayed

Messages: 2150
Registered: July 2009

Senior Member

> First, is there a better way than to use a MouseListener to detect icon
> clicks?

No, this is the way to do it.

> Second, is there a way, to detect clicks on a TreeItem's icon without
> having it automatically selected (I tried with event.doit and similar
> stuff, without an effect)?

Not specifically, but you can remember that the item's image was clicked and
then remove the item from the selection. For an example of filtering item
selections see
http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.swt.sni ppets/src/org/eclipse/swt/snippets/Snippet80.java?view=co .
I've tried this snippet on win32, gtk, and cocoa, and none of them show any
selection flash when selecting-then-deselecting an item.

HTH,
Grant

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