Robert Roessler:

OTOH, from your reply, I may not "get it" WRT alpha values of 256.  I
thought the idea was to not use *any* translucency stuff in the
rendering code when that value was specified?

  AlphaBlend won't be used when alpha=256.

  When an application asks for alpha and Scintilla can't provide it
the result is ugly and Scintilla doesn't tell the application that it
can't do alpha so the application has to guess itself. Its not a big
deal since the platforms that don't do alpha are so little used now.
Jeffrey Ren works on older versions of Windows so cares about this.

  Neil
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