with Quickdraw worked) in src/Fl_Images.cxx.
Changed test/unittest_images.cxx to use Fl_RGB_Image::draw() to draw images
with alpha channel, because the current version of fl_draw_image()
supports alpha channels only on Mac. Tested on Windows[1], Linux, and Mac.
[1] Windows with GDI drawing doesn't work yet for gray+alpha (STR 2105).
To do: Check, if fl_draw_image() should support alpha channel images
on all platforms or not at all. The current documentation mentions only
RGB and gray scale images. IMHO the behavior is undefined for values of
abs(d) == 2 and abs(d) > 3. See also fl_draw_image_mono().
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6773 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
