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[STR New]

Link: https://www.fltk.org/str.php?L3523
Version: 1.4.0


When a popup Fl_Menu_Button is popped, changes to other Fl_Menu_Buttons
effect the original popup menu button and replace its text.  So for
example, a popup with File/Open will get replaced with Red Channel from
another button.


Link: https://www.fltk.org/str.php?L3523
Version: 1.4.0

#include "FL/Fl.H"
#include "FL/Fl_Window.H"
#include "FL/Fl_Menu_Button.H"

class MyWindow;
void new_menu( MyWindow* win );

class MyWindow : public Fl_Window
{
    Fl_Menu_Button* pop1;  // first menu
    Fl_Menu_Button* pop2;  // second menu
  public:
    MyWindow(int w, int h) : Fl_Window( w, h ),
			     pop1( new Fl_Menu_Button(0,0,0,0)),
			     pop2( new Fl_Menu_Button( 30, 30, 60, 20,
						       "no image"))
    {
	pop1->type( Fl_Menu_Button::POPUP3 );
    }
    
    int handle( int e )
    {
	if ( Fl::event_button() == 3 )
	{
	    pop1->add( "File/Open/Sequence" );
	    pop1->add( "File/Save/Image" );
	    pop1->add( "Edit/Copy" );
	    pop1->add( "Next" );
	    pop1->add( "Previous" );
	    pop1->popup();
	    pop1->clear();
	    return 1;
	}
	return Fl_Window::handle( e );
    }

    void pop2_create()
    {
	pop2->clear();
	pop2->add( "Red" );
	pop2->add( "Green" );
	pop2->add( "Blue" );
	Fl::repeat_timeout( 2.0, (Fl_Timeout_Handler) new_menu, this );
    }
};

void new_menu( MyWindow* win )
{
    win->pop2_create();
}

int main( int argc, char** argv )
{
    MyWindow win(640,480);
    Fl::add_timeout( 0.5, (Fl_Timeout_Handler) new_menu, &win );
    win.show();
    return Fl::run();
}