Is there a widget for drawing n-ary trees?

pasture · **Joined:** Mon Nov 21, 2005 9:31 am **Posts:** 5

Hi all,

I'm looking for a widget that draws n-ary tree structures (please have a look at the example: http://www.pasture.de/tree.jpg). The nodes themselves also contain widgets.

I don't have much experience with GTK. Is there a widget I can use or inherit or do I have to start from scratch with drawing arrows and rectangles?

Thank you very much in advance for any suggestions. And let me know in case I should give more detailed information.

openldev · **Posted:** Mon Nov 21, 2005 6:45 pm

I would just recommend a GtkDrawingArea or the Gnome canvas if you are using the Gnome UI libraries.

pasture · **Joined:** Mon Nov 21, 2005 9:31 am **Posts:** 5

Thanks for your message.

It should be possible to launch the application with MinGW, so I guess I cannot use Gnome UI libraries, or am I wrong?

As for the GTKDrawingArea, I also had that idea. However, I think it will be difficult to realize. Whenever the structure of my tree changes, I have to recalculate the position of all the node widgets. And of course, I have to know the size of all the node widgets in order to do that.

It would be great if there was an easier way, but I don't have much hope. :(

pasture · **Joined:** Mon Nov 21, 2005 9:31 am **Posts:** 5

I had another idea. Maybe I can use the Graphviz APIs to calculate the coordinates of each node.

At least, if I find out how to use the APIs. But I guess this is the wrong place to ask about that.

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Is there a widget for drawing n-ary trees?

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