Paul,
I think Brain Tiffin may have added to the original example. When
looking at the ocgtk.c source here:
http://svn.wp0.org/ocdocs/brian/ocgtk.c it does contains a `#include
"ocgtk.h"` in the source file, not to mention addition code in some of
the routines in it.
Also see http://svn.wp0.org/ocdocs/brian/gtkhello.cob
cobc -c `pkg-config --cflags gtk+-2.0` ocgtk.c
cobc -x -W -debug `pkg-config --libs gtk+-2.0` gtkhello.cob ocgtk.o
If you look at the original post to this thread, you'll see that I had
problems with the ocgtk.c version that you are referring to. Brain said
that changes made to OpenCobol caused it to fail. Some compile/link
issue related to module and cob_module. So currently neither version
works with the latest version of OpenCobol.
Michael Anderson,
832.515.3868
Paul McNary wrote:
Hello Michael
The GTK OpenCOBOL example I started with is at:
http://add1tocobol.com/tiki-index.php?page=GTK+Sample
Both the COBOL piece and the C pieces are on that page.
It was done by: Brian Tiffin address@hidden
I have been playing with it and use Glade-3 Interface
Designer with the GTKBuilder functionality (I actually
starting playing with libglade first) and it appears to
be able to create a GUI for new work very quickly. The
callbacks can be in either C or COBOL. The callbacks
and all can be managed in Glade-3 as far as creating
the stubs. All you have to do is create the callback
functions.
I am not using OpenCOBOL but this source example has
gotten further than anything I have looked for, for years.
I have been using MicroFocus COBOL for decades but OpenCOBOL
looks very interesting.
I have looked at Qt and Flexus. I think Qt would be fine
if you are comfortable with C++. There is also a Vala example
in the OpenCOBOL docs that gives one several GUI interface options for
?Nix. I wanted only a ?nix solution, no windows, so using GTK on
windows hasn't been an issue for me. Qt has a nice GUI designer
and I think the interface to COBOL would be similar. With Qt
you have to make sure you understand the licensing between versions.
I think Qt4 has GPL and Commercial licensing available. Maybe LGPL.
Qt3 and before was only GPL and Commercial.
So GTK or Vala are both fast development environments for adding
a GUI to COBOL and add Glade-3 with libglade or preferably GTKBuilder
and you have a fairly RAD system.
Paul McNary
address@hidden
Michael wrote:
David,
You mentioned Native windows API for GUI development, and I
appreciate the input. Have you looked at Qt? I heard that it is
platform-independent. I heard that Qt uses the native API for GUI
development on whatever platform it is running on. For native windows
I have used a commercial product called Cobol SP2, from Flexus, it is
multi-platform, but when running on unix it still requires a Windows
ThinClient. For the HP3000 migration stuff I highly recommend SP2 for
screen conversions, and the Eloquence DBMS for database conversion.
But sill, I have no real Linux (or GNU/GPL) solution for GUI screens.
Michael Anderson,
832.515.3868
David Essex wrote:
Michael wrote:
...
<Optionalreading>
I've been using Linux for years, but only using it (network config,
web/html , email, ftp, and stuff like that), no real programming.
I've been writing Fortran, COBOL, and some C for decades in the
mini-mainframe world, started with Fortran/66 in 1983, then ansi74
COBOL in 1986, very little C.
OpenCobol is my path to multi platform programming. I really want
to _thank everyone _evolved in developing OpenCobol.
There are other areas I need to conquer in a multi-platform
environment, GUI, DBMS, and System calls or intrinsics.
However, right now I can't seem to compile anything worthwhile!
When (not if) I get running with this, I'll be serious advocate for
OpenCobol!
</Optionalreading>
GTK is a UN*X toolkit, and a front end to the WinAPI.
It is rarely used on WinXP (even with Cygwin or MinGW).
A native WinAPI C application is relatively easy to write.
And since OC generates C code, it is easy to integrate.
Brian, maybe you could add an native WinAPI example to your FAQ, for
Cygwin (MinGW) users.
You can find a trivial example included in the TC source code [1]
(test.code/tgui02).
Hope this helps.
1) TinyCOBOL download
http://tiny-cobol.sf.net/download.php
http://prdownloads.sf.net/tiny-cobol/tinycobol-0.64.tar.bz2
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