Reference Manual - 1.0.1
IDirectFBScreen   GetMixerDescriptions

Get a description of available mixers.    取得有效混合器的描述

GetMixerDescriptions (
  IDirectFBScreen   * thiz,
  DFBScreenMixerDescription   * ret_descriptions
);

All descriptions are written to the array pointed to by ret_descriptions. The number of mixers is returned by IDirectFBScreen::GetDescription().

所有的设备描述符写到ret_descriptions 的数组指针

.返回混合器的描述符就用:IDirectFBScreen::GetDescription().

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