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The MILCMD_GLYPHRUN_CREATE packet creates or updates a GlyphRun resource. The server MUST use this message to create a resource of type TYPE_GLYPHRUN, instead of the standard MILCMD_CHANNEL_CREATERESOURCE message.
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messageSize |
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controlCode |
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targetResource |
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hGlyphCache |
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GlyphCount |
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PrecontrastLevel |
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GlyphIndices (variable) |
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messageSize (4 bytes): A 32-bit unsigned integer. The total size of this message and its payload in bytes. The value of this field MUST be set to a number divisible by four and greater than or equal to 0x00000018.
controlCode (4 bytes): A 32-bit unsigned integer containing the control code for this message. The value of this field MUST be equal to 0x00000054.
targetResource (4 bytes): A 32-bit unsigned integer. The value of this field MUST be set to a valid resource handle referencing a resource of type TYPE_GLYPHRUN. This handle identifies the resource that is the target for this message. If the handle is not associated with an existing glyph run resource then it MUST be a resource handle valid for creation on this channel. In that case, a new glyph run resource will be created and this handle value will be associated with the new resource.
hGlyphCache (4 bytes): A 32-bit unsigned integer. The value of this field MUST be set to a valid resource handle referencing a resource of type TYPE_GLYPHCACHE. This resource represents the glyph cache where the glyph bitmaps that will be used by this glyph run are stored.
GlyphCount (4 bytes): A 32-bit unsigned integer. The number of glyphs contained in the glyph run.
PrecontrastLevel (4 bytes): A 32-bit signed integer. Instructs the composition engine to thicken or thin the glyphs. The value of this field MUST be larger than zero and MUST be less than or equal to six.
GlyphIndices (variable): A variable-length array of 32-bit unsigned integers. An array containing the glyph bitmap indices that are used to render this glyph run. Only the least significant 16 bits of each integer in the array is relevant. The size of this array is specified by the GlyphCount field.