mirror of https://github.com/fltk/fltk
104 lines
2.8 KiB
C++
104 lines
2.8 KiB
C++
|
//
|
||
|
|
// "$Id$"
|
||
|
|
//
|
||
|
|
// 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 "$Id$".
|
||
|
|
//
|