A-sync file dialog interface implemented. Actual dialog is still model.
A-sync file dialog interface implemented. Actual dialog is still model.

LayoutFarm/PixelFarm,mmoening/agg-sharp,mmoening/agg-sharp,larsbrubaker/agg-sharp,mmoening/agg-sharp,jlewin/agg-sharp,MatterHackers/agg-sharp