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How to deselect items in tree control

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Norbini View Drop Down
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    Posted: 30 January 2014 at 11:39am
Hi,

  I've seen that I can select items in a multi-select tree control using SelectItem() or SelectItems(), but what is the correct way to deselect items?

  I guess it is possible to do (in pseudocode):
    CTypedPtrList<CPtrList, HTREEITEM> CurrentSelection;
    GetSelectedItems(CurrentSelection);   // Get the list of currently selected items
    SelectAll(FALSE, NULL); // Deselect all items
    for (PreviouslySelectedItem in CurrentSelection) {
        if (PreviouslySelectedItem != ItemToDeselect) {
            SelectItem(PreviouslySelectedItem); // Select all previously selected items except the item to deselect
        }
    }

  However, I suspect this will generate a large number of TVN_SELCHANGED messages and probably make the selection flicker.

  Is there a better way that I'm missing or would this approach be ok?

  Many thanks in advance,
    -Nige
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