Changeable
Normally, controls, which correspond to a fully-specified event, cannot be modified by the user. This means: the values for: reference point, offset and parameter are always identical to the values for the event-out in the registry. You can allow the users to modify one the mentioned values by setting this parameter to "true". In this case it might be helpful to provide an alterantive image with the parameter "BitmapModified" to signal the users that a control was modified and is no longer identical to its corresponding event.
Possible values: true, false, TRUE, FALSE, yes, no, 1, 0
Default value: false