You can inherit Fl_Menu_Bar and catch FL_ENTER events. Here is the
working sample:
#include <FL/Fl.H>
#include <FL/Fl_Double_Window.H>
#include <FL/Fl_Menu_Bar.H>
#include <FL/Fl_Menu_Item.H>
class MyBar : public Fl_Menu_Bar {
public:
MyBar(int X, int Y, int W, int H, const char *l=0) :
Fl_Menu_Bar(X, Y, W, H, l) { }
int handle(int e) {
if(e == FL_ENTER) {
const Fl_Menu_Item *v;
v = menu()->pulldown(x(), y(), w(), h(), v, this, 0, 1);
picked(v);
return 1;
}
return Fl_Menu_Bar::handle(e);
}
};
int main(int argc, char **argv) {
Fl_Double_Window *win = new Fl_Double_Window(300,100);
MyBar *menubar = new MyBar(0,0,300,25);
menubar->add("&File/Open");
menubar->add("&File/Save");
menubar->add("&Edit/Cut");
menubar->add("&Edit/Copy");
menubar->add("&Edit/Paste");
win->end();
win->show();
return(Fl::run());
}
pulldown() function will use mouse position and according to
coordinates, select appropriate menu item. The same strategy is used for
getting ordinary 'click-ed' menu event, except it is handled when FLTK
receives FL_PUSH event.
Sanel
On 01/21/2013 06:38 PM, Howard Rubin wrote:
> How can I get a menu item to drop down by hovering the mouse?
>
> In this program, clicking on the File menu will drop it down, and then I
> can just move the mouse over the Edit menu to drop it down.
>
> I need the File menu to drop down when I move the mouse over it without
> the mouse click.
>
>
> #include <FL/Fl.H>
> #include <FL/Fl_Double_Window.H>
> #include <FL/Fl_Menu_Bar.H>
>
> int main(int argc, char **argv) {
> Fl_Double_Window *win = new Fl_Double_Window(300,100);
> Fl_Menu_Bar *menubar = new Fl_Menu_Bar(0,0,300,25);
>
> menubar->add("&File/Open");
> menubar->add("&File/Save");
>
> menubar->add("&Edit/Cut");
> menubar->add("&Edit/Copy");
> menubar->add("&Edit/Paste");
>
> win->end();
> win->show();
>
> return(Fl::run());
> }
>
>
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