ZegoMixerWhiteboard.defaultConfig constructor
构造一个混流输入白板对象
Implementation
ZegoMixerWhiteboard.defaultConfig()
: whiteboardID = 0,
horizontalRatio = 16,
verticalRatio = 9,
isPPTAnimation = false,
layout = Rect.zero,
zOrder = 0,
backgroundColor = 0xF1F3F400;