solve the conflict between double keys

[Kevin]

first things first stop using that until you fix your code
you need to remove the props you set when dialog starts

you must always do this

Everytime you use
SetProp

you must also use 
RemoveProp
either when the dialog closes or the function/macro ends

    case WM_DESTROY
    RemoveProp he3 "wndproc"
    RemoveProp he5 "wndproc"

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fix your code  like i suggested above.   then restart qm

    int i4=LB_SelectedItem(lParam _s)
    mes F"selected {i4} text  {_s}"