Reference Manual - 1.0.0
IDirectFBSurface   Flip

Flip/Update surface buffers.

Flip (
  IDirectFBSurface   * thiz,
  const DFBRegion   * region,
  DFBSurfaceFlipFlags   flags
);

If no region is specified the whole surface is flipped, otherwise blitting is used to update the region. If surface capabilities don't include DSCAPS_FLIPPING, this method has the effect to make visible changes made to the surface contents.