> On 02/28/13 23:58, edgar wrote:
> > Is it possible to send text typed into an Fl_Input box to another box
> > without using
> > a callback via an enter button?
>
> Going to assume you meant not to have the word "without" in the above.
>
> > I would like to have the user type an answer into an Input box and then hit
> > the enter key on the
> > keyboard.
>
> Sure, just use set the callback() for the input widget to send whatever
> the user typed to the other box. eg:
>
> #include <FL/Fl.H>
> #include <FL/Fl_Window.H>
> #include <FL/Fl_Input.H>
> #include <FL/Fl_Box.H>
> //
> // Demonstrate Fl_Input to use Enter key to trigger callback to change
> window's title - erco 3/1/13
> //
> void ChangeTitle(Fl_Widget *w, void *data) {
> Fl_Input *in = (Fl_Input*)w;
> Fl_Window *win = (Fl_Window*)data;
> win->label(in->value()); // send value of Fl_Input to
> window's title
> }
> int main(int argc,char **argv) {
> Fl_Window *win = new Fl_Window(300,100);
> Fl_Input *in = new Fl_Input(140,10,150,25,"Type something:");
> in->callback(ChangeTitle, (void*)win);
> in->when(FL_WHEN_ENTER_KEY);
> win->show();
> return(Fl::run());
> }
>
> > Also, if I am wanting to loop this series of events, how would I go about
> > this
> > if the Input box and the other text box are dynamically allocated? Should
> > they
> > be destroyed and recreated with each iteration to avoid memory leaks?
>
> No, just hide() and show() them as needed.
>
> If these widgets are in a dialog, then just hide() and show() the dialog
> window, and leave the widgets within allocated.
Thanks! I will give this a try. I posted my algorithm and starter code for a
little program. You guys are great!
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