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HarbourGtXwc

Q: Which is the main purpose of gtxwc ? It's for xwindows ?

A: Yes.

Q: console mode ?

Yes, it creates window for console output and uses X protocol only for input (keyboard, mouse and other events) and output.

It has some extensions which cannot be implemented in terminal mode.

It support all key combination as in Clipper, can draw box characters even if chosen font does not support them
(semigraphic characters are emulated by graphical drawing) and gives other features like support for xWindow selections (clipboard and primary) VGA cursor shape emulation, etc. and of course you
can link your program with some xWindow GUI library for Harbour, f.e. xbgtk and use mixed interface - standard Clipper input/output in console Window and native GUI objects.

You can also draw some graphic primitives using GFX operations, see tests/gfx.prg as an example.

GT runtime switch

With current GTAPI you can link your program with more then one GT driver and chose them at runtime. F.e.:

hblnk <obj1>.o <obj2>.o ... <lib(s)>.a ... -gtcrs -gtsln -gtxwc -omyprog

The first GT driver set by -gt<name> switch will be the deafult one.
You can change the GT driver using //gt<name? switch
F.e.
./myprog //gtxwc
or:
./myprog //gtsln

When you create shared binaries (without -[full]static switch) then you can always access all existing GT drivers even if you don't explicitly
link them using //gt<name> switch. With the exception to GTALLEG.

This GT based on allegro library which is not default part of Linux distribution and I intentionally didn't want to create Harbour shared library allegro dependent. For this GT you always have to explicitly use -gtalleg switch in hblnk or hbmk (and of course you need allegro installed in your system).

This is also graphic GT driver which works in similar way to GTXWC and needs X11 or frame buffer console for working. GTALLEG can be used on any platform for which Allegro library exists, f.e. DOS, *nixes, Windows.

There is also yet another GT driver which creates graphical console Window.

It's GTWVT and can be use only in Windows. All this GT drivers redirect whole console output.

The OUTSTD and OUTERR output is intentionally not redirected and can be controlled by user.

Q: What are the requeriments or dependencies ?

XWindow system.

Reference