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Signed-off-by: Peter Siegmund <mars3142@noreply.mars3142.dev>

libs/wxWidgets-3.3.1/docs/doxygen/overviews/unixprinting.h

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+/////////////////////////////////////////////////////////////////////////////
+// Name:        unixprinting.h
+// Purpose:     topic overview
+// Author:      wxWidgets team
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+
+@page overview_unixprinting Printing Under Unix (GTK+)
+
+Printing under Unix has always been a cause of problems as Unix does not
+provide a standard way to display text and graphics on screen and print it to a
+printer using the same application programming interface - instead, displaying
+on screen is done via the X11 library while printing has to be done with using
+PostScript commands. This was particularly difficult to handle for the case of
+fonts with the result that only a selected number of application could offer
+WYSIWYG under Unix. Equally, wxWidgets offered its own printing implementation
+using PostScript which never really matched the screen display.
+
+Since GTK+ 2.10, support for printing has been added to GTK+ itself and
+beginning with wxWidgets 2.9, GTK+ printing is used by default (i.e. unless
+<tt>\--without-gtkprint</tt> was explicitly used when configuring the library).
+Support for GTK+ print is detected dynamically, i.e. during the run-time: if it
+is found, printing will be done through GTK+, otherwise the application will
+fall back to the old PostScript printing code. This allows the applications
+built with wxWidgets to still work on the very old systems using GTK+ earlier
+than 2.10.
+
+*/