> Fl::option(OPTION_ARROW_FOCUS, 0); is incorrect syntax.
Shouldn't be:
http://fltk.org/doc-1.3/classFl.html#a9b040cad5d6fc04bb139877015091c16
What svn version of 1.3.x are you using? You might have an old one.
Regarding using spacebar as a shortcut, since spacebar (and tab and
arrows)
are used for keyboard nav, you first have to wholesale disable keyboard
navigation for all widgets, otherwise they'll steal the event.
Besides the above, there's another (older?) way to globally disable
keyboard nav/focus box behavior: Fl::visible_focus(0|1), which in
current commits is equivalent to the above.
To handle the spacebar, I'd suggest instead having your window handle
it as a regular keyboard event, eg. in the handle() method of your
window.
The following will probably do what you want:
#include <stdio.h>
#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Button.H>
class MyWindow : public Fl_Window {
public:
MyWindow(int W, int H) : Fl_Window(W,H) {
}
int handle(int e) {
int ret = Fl_Window::handle(e);
switch (e) {
case FL_FOCUS:
case FL_UNFOCUS:
ret = 1;
break;
case FL_KEYDOWN:
case FL_KEYUP:
if ( Fl::event_key() == ' ' ) { // handle space
if ( e == FL_KEYDOWN ) fprintf(stderr, "Spacebar hit\n");
ret = 1;
}
break;
}
return(ret);
}
};
int main(int argc, char **argv) {
Fl::visible_focus(0); // disable visible focus globally
MyWindow win(400,300);
new Fl_Button(10,10,120,25,"A");
new Fl_Button(10,40,120,25,"B");
win.end();
win.show();
return(Fl::run());
}
There's an example of general keyboard press/release handling here
which I used for reference for the above:
http://seriss.com/people/erco/fltk/#KeyPressRelease
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