typedef struct _GLYPHBITS { POINTL ptlOrigin; SIZEL sizlBitmap; BYTE aj[1]; } GLYPHBITS;
The GLYPHBITS structure is used to define a glyph bitmap.
The form of the bitmap requested is defined by pfo>flFontType and FO_16_LEVEL. If this is zero, then GDI is requesting a monchrome bitmap; otherwise GDI requests 16-level antialiased glyphs.
GDI will make this request of drivers that have antialiased fonts (see the description of DrvQueryFontCaps). It is possible that a driver may not be able to render a font in a multilevel format. In this case, the driver fails the call and GDI will call the driver again requesting a monochrome realization.
DrvGetGlyphMode, DrvQueryFontData, FONTOBJ_cGetGlyphs, GLYPHDEF