Partial Screen Refresh

[Genx]

I stumbled accross this quite accidentally and im not sure exactly what to make of it, but it has given me a few laughs.

I have a dynamic login screen, that is its an unstored calc that loads one of 6 login designs randomly. Now the thing is, when my users enter incorrect details, i show a custom dialog with an incorrect details message. If you then click okay to the message, the portion over which the custom dialog was sitting has now refreshed (while the rest remains the same) i.e. it is now showing part of a different login design where the custom dialog was sitting. Furthermore, if you drag the custom dialog over the calc, it will refresh multiple times producing a mish mash of all things great and small.

Just an interesting thing i figure someone might be able to exploit

~Genx