2.1.2.3 DriverStringOptions Flags

The DriverStringOptions flags specify properties of graphics text positioning and rendering. These flags can be combined to specify multiple options.

Constant/value

Description

DriverStringOptionsCmapLookup

0x00000001

If set, the positions of character glyphs SHOULD be specified in a character map lookup table.

If clear, the glyph positions SHOULD be obtained from an array of coordinates.

DriverStringOptionsVertical

0x00000002

If set, the string SHOULD be rendered vertically.

If clear, the string SHOULD be rendered horizontally.

DriverStringOptionsRealizedAdvance

0x00000004

If set, character glyph positions SHOULD be calculated relative to the position of the first glyph.<7>

If clear, the glyph positions SHOULD be obtained from an array of coordinates.

DriverStringOptionsLimitSubpixel

0x00000008

If set, less memory SHOULD be used to cache anti-aliased glyphs, which produces lower quality text rendering.

If clear, more memory SHOULD be used, which produces higher quality text rendering.

Graphics text output is specified in EmfPlusDrawDriverString records.

See section 2.1.2 for the specification of additional bit flags.