Author: greg.ercolano
Date: 2011-01-08 10:58:50 -0800 (Sat, 08 Jan 2011)
New Revision: 8221
Log:
Added a drag and drop example.
Added:
branches/branch-1.3/examples/howto-drag-and-drop.cxx
Added: branches/branch-1.3/examples/howto-drag-and-drop.cxx
===================================================================
--- branches/branch-1.3/examples/howto-drag-and-drop.cxx
(rev 0)
+++ branches/branch-1.3/examples/howto-drag-and-drop.cxx 2011-01-08
18:58:50 UTC (rev 8221)
@@ -0,0 +1,103 @@
+//
+// "$Id$"
+//
+// A simple demo of drag+drop with FLTK.
+// Originally from erco's cheat sheet, permission by author.
+// Inspired by Michael Sephton's original example posted on fltk.general.
+//
+// When you run the program, just drag the red square over
+// to the green square to show a 'drag and drop' sequence.
+//
+// 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 <FL/Fl.H>
+#include <FL/Fl_Window.H>
+#include <FL/Fl_Box.H>
+
+// SIMPLE SENDER CLASS
+class Sender : public Fl_Box {
+public:
+ // Ctor
+ Sender(int x,int y,int w,int h) : Fl_Box(x,y,w,h) {
+ box(FL_FLAT_BOX);
+ color(9);
+ label("Drag\nfrom\nhere..");
+ }
+ // Sender event handler
+ int handle(int event) {
+ int ret = Fl_Box::handle(event);
+ switch ( event ) {
+ case FL_PUSH: { // do 'copy/dnd' when someone clicks on box
+ const char *msg = "It works!";
+ Fl::copy(msg,strlen(msg),0);
+ Fl::dnd();
+ ret = 1;
+ break;
+ }
+ }
+ return(ret);
+ }
+};
+// SIMPLE RECEIVER CLASS
+class Receiver : public Fl_Box {
+public:
+ // Ctor
+ Receiver(int x,int y,int w,int h) : Fl_Box(x,y,w,h) {
+ box(FL_FLAT_BOX); color(10); label("..to\nhere");
+ }
+ // Receiver event handler
+ int handle(int event) {
+ int ret = Fl_Box::handle(event);
+ switch ( event ) {
+ case FL_DND_ENTER: // return(1) for these events to 'accept' dnd
+ case FL_DND_DRAG:
+ case FL_DND_RELEASE:
+ ret = 1;
+ break;
+ case FL_PASTE: // handle actual drop (paste) operation
+ label(Fl::event_text());
+ fprintf(stderr, "Pasted '%s'\n", Fl::event_text());
+ ret = 1;
+ break;
+ }
+ return(ret);
+ }
+};
+int main(int argc, char **argv) {
+ // Create sender window and widget
+ Fl_Window win_a(0,0,200,100,"Sender");
+ Sender a(0,0,100,100);
+ win_a.end();
+ win_a.show();
+ // Create receiver window and widget
+ Fl_Window win_b(400,0,200,100,"Receiver");
+ Receiver b(100,0,100,100);
+ win_b.end();
+ win_b.show();
+ return(Fl::run());
+}
+
+//
+// End of "$Id$".
+//
Property changes on: branches/branch-1.3/examples/howto-drag-and-drop.cxx
___________________________________________________________________
Name: svn:keywords
+ author date id revision
Name: svn:eol-style
+ native
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