form unload

hi
i have got a form which if tried to close should get a message wid a yes no. if it is a no then the method should exit
i implemented Form_Unload as well as Form_QueryUnload, but as i exit the method the form gets closed ne way, wat do i do

VB Code:

Private Sub Form_QueryUnload(Cancel As Integer, UnloadMode As Integer)
    
    Dim res As Integer
    
    res = MsgBox("Are you sure you want to close this app ?", vbYesNo + vbQuestion, "Application shutdown")
    If res = vbNo Then Cancel = True
    
End Sub