The DrawObject() method has an undocumented fourth parameter for alpha. Integer value from &HFFFFFF00 to &HFFFFFFFF. DrawRotatedObject and DrawScaledObject should also have the same undocumented parameter. This is not available on the legacy 3.x firmware.
As you suggest: This is not available on the legacy 3.x firmware. i am working on roku2XD device. please tell me what is the process to check legacy 3.x firmware? and please suggest me how to pass fourth parameter for alpha as opacity in DrawScaledObject. Any help would be thankful to me.