How to get the control ID, control handle and notification code from NMHDR structure

[kcvinu]

Hi all, I would like to know how to get the control ID, control handle and 
notification code from NMHDR structure. Here is my code. Is it the right method 
? 
    
    
    of WM_NOTIFY :
                var tNMHDR : NMHDR = cast[NMHDR](repr(lParam))
    
    
    Run