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dhtmlxtree and checkboxes

I have a tree hierarchy with about 1500 entries. The hierarchical tree is built with dhtmlxtree. I am using checkboxes to indicate to the user whether a particular item in the tree is enabled or disabled. xml is constructed on the server side. The enabled/disabled state is stored in the database.

In a given user session, I want to be able to persist only the changes that user made. For example, say nodes 1,3,5 were disabled (checkbox unchecked) and 2, 4 were enabled (checkbox checked). User comes in and checks (enables) 1,3 and unchecks (disables) 4. I want to update the database only for nodes 1,3,4.

How do I accomplish this with the APIs provided? I see getAllChecked(), getAllCheckedBranches(), so on so forth, but no API to indicate the only ones that has changed. The dataProcessor works only when I edit the text, not when I click the checkbox.

Any help would be appreciated.

Thanks
MP

You can trigger dataprocessor's updates by next code


tree.attachEvent("onCheck",function(id,state){
 // code executed when checkbox state changed
 dataProcessor.setUpdated(id,true,true); // mark row as updated, and trigger data sending
})