Limiting label length when editing


To limit the length of text that can be entered when editing an item label, you have to add a handler for the TVN_BEGINLABELEDIT notification. Within this handler get the edit control and call the LimitText() function.
 
void COutline::OnBeginLabelEdit(NMHDR* pNMHDR, LRESULT* pResult) 
{
        TV_DISPINFO* pTVDispInfo = (TV_DISPINFO*)pNMHDR;
        
        // Limit text to 127 characters
        GetEditControl()->LimitText(127);

        *pResult = 0;
}