IDWriteTextRenderer1：:D rawUnderline 方法 (dwrite_2.h)

语法

HRESULT DrawUnderline(
  void                           *clientDrawingContext,
  FLOAT                          baselineOriginX,
  FLOAT                          baselineOriginY,
  DWRITE_GLYPH_ORIENTATION_ANGLE orientationAngle,
  DWRITE_UNDERLINE const         *underline,
  IUnknown                       *clientDrawingEffect
);

参数

clientDrawingContext

baselineOriginX

baselineOriginY

orientationAngle

underline

clientDrawingEffect

要求