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Re: Anomaly in tree control [message #29783 is a reply to message #29782]

Tue, 16 November 2010 11:57

mrjt
Messages: 705
Registered: March 2007
Location: London

Contributor

I does appear to be a bug. The TreeCtrl uses a pool of nodes to reduce allocation times but doesn't reset Node::isopen on a new Insert. In this case that means that the node thinks it's open but iot doesn't have a sub-tree because the WhenOpen callback hasn't been triggered.

The additon of:

m.isopen = false;

to TreeCtrl::Insert fixes the problem.

This example will still not be able to remember the openness of nest trees though. If you want dynamic sub-tree creation while remembering the opneness of sub-trees you'll have to remember fodler states yourself.

[Updated on: Tue, 16 November 2010 11:58]

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