DWRITE_GLYPH_IMAGE_DATA structure (dwrite_3.h)

Data for a single glyph from GetGlyphImageData.

Syntax

struct DWRITE_GLYPH_IMAGE_DATA {
  void const    *imageData;
  UINT32        imageDataSize;
  UINT32        uniqueDataId;
  UINT32        pixelsPerEm;
  D2D1_SIZE_U   pixelSize;
  D2D1_POINT_2L horizontalLeftOrigin;
  D2D1_POINT_2L horizontalRightOrigin;
  D2D1_POINT_2L verticalTopOrigin;
  D2D1_POINT_2L verticalBottomOrigin;
};

Members

imageData

Pointer to the glyph data.

imageDataSize

Size of glyph data in bytes.

uniqueDataId

Unique identifier for the glyph data. Clients may use this to cache a parsed/decompressed version and tell whether a repeated call to the same font returns the same data.

pixelsPerEm

Pixels per em of the returned data. For non-scalable raster data (PNG/TIFF/JPG), this can be larger or smaller than requested from GetGlyphImageData when there isn't an exact match. For scaling intermediate sizes, use: desired pixels per em * font em size / actual pixels per em.

pixelSize

Size of image when the format is pixel data.

horizontalLeftOrigin

Left origin along the horizontal Roman baseline.

horizontalRightOrigin

Right origin along the horizontal Roman baseline.

verticalTopOrigin

Top origin along the vertical central baseline.

verticalBottomOrigin

Bottom origin along vertical central baseline.

Requirements