Thank you a lot for that!
That code does indeed work great in fltk2!
I still have a problem though:
I copied that code into my main file and replaced the current main
with that main and I got the two windows which allowed me to drag and drop.
I replaced Receiver with my own Drag and Drop-receiving class and that worked
great as well. BUT; my class still doesn't work in my actual application.
Neither does Sender and Receiver.
Anyone have an idea why my application isn't allowing drag and drop (and as I
said, my DND-class works if I plug it into the code below).
> Andreas schrieb:
> > Hi everyone!
> >
> > I've been trying to get drag and drop to work in my application, but
> > without success.
>
> gregs example works also with fltk2:
>
> /*
> fltk2-config --compile dnd.cxx && ./dnd
> */
> #include "fltk/Box.h"
> #include "fltk/events.h"
> #include "fltk/Window.h"
> #include "fltk/run.h"
> #include <string.h>
> #include <stdio.h>
>
> using namespace fltk;
>
> class Sender : public Widget
> {
> int no;
> int handle(int event)
> {
> switch (event)
> {
> case PUSH:
> char buf[16];
> sprintf(buf,"message %d",no++);
> copy(buf,strlen(buf),0);
> dnd();
> return 0;
> }
> return Widget::handle(event);
> }
> public:
> Sender(int x, int y, int w, int h)
> : Widget(x, y, w, h, "drag source")
> ,no(0)
> {
> box(UP_BOX);
> }
> };
>
> class Receiver : public Widget
> {
> int handle(int event)
> {
> switch (event)
> {
> case DND_ENTER:
> case DND_RELEASE:
> case DND_DRAG:
> return 1;
> case PASTE:
> //fprintf(stderr,"PASTE %s",event_text());
> label(event_text());
> redraw();
> return 1;
> }
> return Widget::handle(event);
> }
> public:
> Receiver(int x, int y, int w, int h)
> : Widget(x, y, w, h, "drag target")
> {
> box(DOWN_BOX);
> }
> };
>
> int main(int argc, char **argv) {
> // Create sender window and widget
> Window win_a(33,33,166,166,"Sender");
> win_a.begin();
> Sender a(33,33,100,100);
> win_a.end();
> win_a.show();
> // Create receiver window and widget
> Window win_b(433,33,166,166,"Receiver");
> win_b.begin();
> Receiver b(33,33,100,100);
> win_b.end();
> win_b.show();
> return run();
> }
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