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Asked: 2026-05-10T14:10:03+00:00

In some VB6 code, I have a handler for a TreeView’s Collapse event: Private

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In some VB6 code, I have a handler for a TreeView’s Collapse event:

Private Sub MyTree_Collapse(ByVal Node as MSComCtlLib.Node)

This is called whenever a node in the tree is collapsed, whether by the user or programmatically. As it turns out, through some roundabout execution, it may happen that this handler will wind up telling a node to collapse, leading to infinite recursion.

I can think of multiple ways to skin this cat, but what seems simplest to me is to tell the TreeView not to raise events for some period of time. I can’t find a simple call to let me do this, though. Has anyone successfully done this, or do I need to keep track of state in some other manner so I can respond appropriately when recursive events come along?

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1 Answer

  1. I think that like many events in VB, it can’t be switched off.

    Just set a boolean flag as you’ve suggested.

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