2.2.7.4.1 buttonID Element

The buttonID XML element specifies the button element from an AsyncUIMessageBox string that was selected by the user.

If the selected button element has a buttonID attribute value of "IDOK", the buttonID element MUST contain the value 1. If the selected button element has a buttonID attribute value of "IDCANCEL", the buttonID element MUST contain the value 2. If the selected button element holds an integer value, the buttonID element MUST contain that value.

 <xs:element name="buttonID"
   type="xs:integer"
  />