I'm adding a symbol to an Fl_Menu_Item on an Fl_Menu_Bar using
set_labeltype(). It's mostly working but when the menu is dropped down,
the symbol moves to the left by about 12 units. (BTW, this approach
solves the "Changing an Fl_Menu_Bar item colors" question)
Why does the symbol move and how can I keep it from moving?
#include <FL/Fl.H>
#include <FL/fl_draw.H>
#include <FL/Fl_Double_Window.H>
#include <FL/Fl_Menu_Bar.H>
// In fl_labeltype.cxx
extern void fl_normal_label(const Fl_Label* o, int X, int Y, int W, int
H, Fl_Align align);
extern void fl_normal_measure(const Fl_Label* o, int& W, int& H);
enum { EXTRA_MENU_WIDTH = 10, };
void menu_label(const Fl_Label* o, int X, int Y, int W, int H, Fl_Align a) {
fl_normal_label(o, X, Y, W, H, a);
// ***** Why does this move when the menu item is selected? *****
fl_circle(X+W-12, Y+H/2, 5);
}
void menu_measure(const Fl_Label* o, int& W, int& H) {
fl_normal_measure(o, W, H);
W += EXTRA_MENU_WIDTH;
}
int main(int argc, char **argv) {
Fl_Double_Window *win = new Fl_Double_Window(300,25);
Fl_Menu_Bar* menubar = new Fl_Menu_Bar(0,0,300,25);
menubar->add("Menu1/one", 0, 0, 0, 0);
menubar->add("Menu1/two", 0, 0, 0, 0);
Fl::set_labeltype(static_cast<Fl_Labeltype>(FL_FREE_LABELTYPE),
menu_label, menu_measure);
const Fl_Menu_Item* m ;
if ((m = menubar->find_item("Menu1")) != NULL) {
const_cast<Fl_Menu_Item*>(m)->labeltype_ = FL_FREE_LABELTYPE;
}
win->end();
win->show();
return Fl::run();
}
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