Author: greg.ercolano
Date: 2010-06-06 14:24:06 -0700 (Sun, 06 Jun 2010)
New Revision: 7629
Log:
Added howto-add_fd_and-popen.cxx, added missing version Id EOF markers.
Added:
branches/branch-1.3/examples/howto-add_fd-and-popen.cxx
Modified:
branches/branch-1.3/examples/Makefile
branches/branch-1.3/examples/tabs-simple.cxx
Modified: branches/branch-1.3/examples/Makefile
===================================================================
--- branches/branch-1.3/examples/Makefile 2010-06-06 20:28:37 UTC (rev
7628)
+++ branches/branch-1.3/examples/Makefile 2010-06-06 21:24:06 UTC (rev
7629)
@@ -1,6 +1,7 @@
include ../makeinclude
-ALL = tabs-simple$(EXEEXT) \
+ALL = howto-add_fd-and-popen$(EXEEXT) \
+ tabs-simple$(EXEEXT) \
tree-simple$(EXEEXT)
# default target -- build everything
@@ -9,9 +10,6 @@
tabs-simple$(EXEEXT): tabs-simple.cxx
fltk-config --compile tabs-simple.cxx
-tree-simple$(EXEEXT): tree-simple.cxx
- fltk-config --compile tree-simple.cxx
-
# clean everything
clean:
$(RM) $(ALL)
Added: branches/branch-1.3/examples/howto-add_fd-and-popen.cxx
===================================================================
--- branches/branch-1.3/examples/howto-add_fd-and-popen.cxx
(rev 0)
+++ branches/branch-1.3/examples/howto-add_fd-and-popen.cxx 2010-06-06
21:24:06 UTC (rev 7629)
@@ -0,0 +1,72 @@
+//
+// "$Id$"
+//
+// How to use popen() and Fl::add_fd() - erco 10/04/04
+// Originally from erco's cheat sheet, permission by author.
+//
+// Shows how the interface can remain "alive" while external
+// command is running and outputing occassional data. For instance,
+// while the command is running, keyboard navigation works,
+// text can be highlighted, and the interface can be resized.
+//
+// Copyright 1998-2010 by Bill Spitzak and others.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+// USA.
+//
+// Please report all bugs and problems on the following page:
+//
+// http://www.fltk.org/str.php
+//
+#include <stdio.h>
+#include <unistd.h>
+#include <FL/Fl.H>
+#include <FL/Fl_Window.H>
+#include <FL/Fl_Multi_Browser.H>
+
+#define PING_CMD "ping -i 2 -c 10 localhost" // 'slow command' under unix
+
+// GLOBALS
+FILE *G_fp = NULL;
+
+// Handler for add_fd() -- called whenever the ping command outputs a new line
of data
+void HandleFD(int fd, void *data) {
+ Fl_Multi_Browser *brow = (Fl_Multi_Browser*)data;
+ char s[1024];
+ if ( fgets(s, 1023, G_fp) == NULL ) { // read the line of data
+ Fl::remove_fd(fileno(G_fp)); // command ended? disconnect
callback
+ pclose(G_fp); // close the descriptor
+ brow->add(""); brow->add("<<DONE>>"); // append msg indicating
command finished
+ return;
+ }
+ brow->add(s); // line of data read?
append to widget
+}
+
+int main(int argc, char *argv[]) {
+ Fl_Window win(600,600);
+ Fl_Multi_Browser brow(10,10,580,580);
+ if ( ( G_fp = popen(PING_CMD, "r") ) == NULL ) { // start the external
unix command
+ perror("popen failed");
+ return(1);
+ }
+ Fl::add_fd(fileno(G_fp), HandleFD, (void*)&brow); // setup a callback for
the popen()ed descriptor
+ win.resizable(brow);
+ win.show(argc, argv);
+ return(Fl::run());
+}
+
+//
+// End of "$Id$".
+//
Property changes on: branches/branch-1.3/examples/howto-add_fd-and-popen.cxx
___________________________________________________________________
Name: svn:keywords
+ Id
Name: svn:eol-style
+ native
Modified: branches/branch-1.3/examples/tabs-simple.cxx
===================================================================
--- branches/branch-1.3/examples/tabs-simple.cxx 2010-06-06 20:28:37 UTC
(rev 7628)
+++ branches/branch-1.3/examples/tabs-simple.cxx 2010-06-06 21:24:06 UTC
(rev 7629)
@@ -85,3 +85,7 @@
win->show(argc, argv);
return(Fl::run());
}
+
+//
+// End of "$Id$".
+//
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