How to blur a part of the tree?

I have a tree control with check marks and the option "text click on toggle mark.

When I have a list of items that I have to disable (i.e. do grey) some of them, but I can't find the ATTR_DIMMED attribute for the SetTreeItemAttribute() function.

I used SetTreeCellAttribute() but this way the checkmarks remains active, so I can activate / it also for disabled items.

How can I turn it off completely (i.e. Sun) a part of the tree? With its check mark too?

This should do the trick.

int CVICALLBACK TreeCB (int panel, int control, int event,
        void *callbackData, int eventData1, int eventData2)
{
    int itemIdx, dimmed, swallow=0;
    switch (event)
        {
        case EVENT_MARK_STATE_CHANGE:
            itemIdx = eventData2;
            GetTreeCellAttribute(panel, control, itemIdx, 0, ATTR_CELL_DIMMED, &dimmed);
            if (dimmed)
                swallow = 1;
            break;
        }
    return swallow;
}

Tags: NI Software

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