Reference Manual - 1.4.3
IDirectFBDisplayLayer   SetColorAdjustment

Set the layers color adjustment.

DFBResult SetColorAdjustment (
  IDirectFBDisplayLayer   * thiz,
  const DFBColorAdjustment   * adj
);

Only available in exclusive or administrative mode.

This function only has an effect if the underlying hardware supports this operation. Check the layers capabilities to find out if this is the case.

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