Reference Manual - 1.0.1
IDirectFBScreen   EnumDisplayLayers

Enumerate all existing display layers for this screen.

EnumDisplayLayers (
  IDirectFBScreen   * thiz,
  DFBDisplayLayerCallback   callback,
  void   * callbackdata

Calls the given callback for each available display layer. The callback is passed the layer id that can be used to retrieve an interface to a specific layer using IDirectFB::GetDisplayLayer().

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