FD_GLYPHATTR structure

The FD_GLYPHATTR structure is used to specify the return value for the FONTOBJ_pQueryGlyphAttrs and DrvQueryGlyphAttrs functions.


typedef struct _FD_GLYPHATTR {
  ULONG cjThis;
  ULONG cGlyphs;
  ULONG iMode;
  BYTE  aGlyphAttr[1];



Is the size in bytes of the FD_GLYPHATTR structure, including the array specified by the aGlyphAttr member.


Specifies the number of glyphs in the font.


Is a flag indicating the type of information being returned. The following flag is defined:



The array specified by aGlyphAttr is a bit array indicating which glyphs of a vertical font must be rotated. The bit array's length is (cGlyphs+7)/8. If a glyph's bit is set, the glyph should be rotated during rasterization.



Is an array supplying the information specified by iMode. The size of this array is (cGlyphs+7) / 8 bytes.


If iMode is FO_ATTR_MODE_ROTATE (the only flag currently defined), a printer driver can determine the bit that corresponds to a particular glyph index using the following code fragment, where hg is the glyph index and pga is a pointer to an FD_GLYPHATTR structure. If the bit in the aGlyphAttr array associated with glyph index hg is set, result is set to 1. If the same bit in the array is not set, result is set to 0. Note that the bits within a byte are stored so that glyph indexes 0, 1, ..., 7 correspond to bit positions 7, 6, ..., 0 within aGlyphAttr[0], glyph indexes 8, 9, ..., 15 correspond to bit positions 7, 6, ..., 0 within aGlyphAttr[1], and so on.

BYTE glyphBits[8] = {0x80, 0x40, 0x20, 0x10, 0x8, 0x4, 0x2, 0x1};
result = (pga->aGlyphAttr[hg / 8]) & (glyphBits[hg % 8]);



Winddi.h (include Winddi.h)



Send comments about this topic to Microsoft