UniversalWindowsDevDemos AudioFrameInputNodeDemo How to use Audio Frame input buffer. MediaCompositionDemo Capture screen and audio with UWP api. TiebaLoadingWave This is a Win2d demo. Kernal point is CanvasGeometry. implement a water wave with progress. (说人话就是百度贴吧以前用过的球形进度指示器,水波往上涨的效果)