Flex redrawing background when Scrolling, degrafa: How ?.

Answer 1

I just had to use the scroll position in the degrafa property binding

            <degrafa:VerticalLineRepeater   count="{(blackBoard.width + blackBoard.horizontalScrollPosition)/ ApplicationFacade.settings.GRID_SIZE}"
                                            stroke="{whiteStroke}"
                                            x="0"
                                            y="0"
                                            y1="{blackBoard.height + blackBoard.verticalScrollPosition}"
                                            offsetX="0"
                                            offsetY="0"
                                            moveOffsetX="{ApplicationFacade.settings.GRID_SIZE}"
                                            moveOffsetY="0"/>