Hi:

I'm writing a demo for a potential customer, I need to be able to have a flicker free indicator move across a graphic 
background. This indicator is has been read in using PxLoadImage and has transparent areas. 

Ive tried using the PtOsContainer. Its smooth and flicker free - however it has a coloured background and I am unable to
 make it 1) transparent or 2) make its 'fill' the same as the real background. 
Q: is there something that I am missing with PtOSContainer? 

I am also looking into Video memory offscreen. This has potential. However it draws over the background and I get old 
draws still visible as the indicator moves. 
Q: Do I need to 'mask' out the previous indicator before blitting the updated one? If so how? Can you point me to sample
 code where the blitted image is moving? 

Thanks,
Andy