WideStudio Programming Guide	WideStudio Index Table of contents

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How to select the key events on the input field

You can select or reject/convert the key events on the input field with the event procedure by the WSEV_KEY_HOOK trigger.

# A WSEV_KEY_HOOK sample procedure.
# Set the input field with the WSEV_KEY_HOOK trigger.
...

def hookop(object)
  # get the pressed key code.
  key = Mwt::WSGIappKeyboard().getKey() 
  if  (key >= Mwt::WSK_0    && key <= Mwt::WSK_9   ) ||
       (key >= Mwt::WSK_KP_0 && key <= Mwt::WSK_KP_9) ||
        key == Mwt::WSK_plus      || key == Mwt::WSK_minus  ||
        key == Mwt::WSK_BackSpace || key == Mwt::WSK_Delete || key == Mwt::WSK_Insert ||
        key == Mwt::WSK_space     || key == Mwt::WSK_Up     || key == Mwt::WSK_Down   ||
        key == Mwt::WSK_Left      || key == Mwt::WSK_Right  || key == Mwt::WSK_Return ))
    # dispatches..
    return 
  end
  # Reject the other.
  Mwt::WSGIappKeyboard().setKey(0) 
end

This sample of the input field shows how to choose the key event. Mwt::WSGIappKeyboard().setKey(0) reject the key event which you do not need.