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On 9/24/21 7:45 PM Bill Spitzak wrote:
I think we are talking about the same thing. Basically, if the FLTK
program does not make any calls to Fl_Sys_Menu_Bar, then the menu bar
on the top of the mac is left absolutely unchanged (either as whatever
another toolkit set it to, or whatever the default behavior of Mac is
when you don't do anything). It sounds like the current FLTK messes
with the top menu when the programmer does nothing, which I don't
think is correct behavior.
I'm not sure about this. For instance, the test/demo app seems to add
'about demo' and 'Print Front Window' items which I think are generally
useful.
I'm not a regular Mac user and didn't explore the Sys_Menu_Bar features
yet, so my observations may not be helpful.
For avoiding having to change your code depending on the platform, I
think a window subclass (MainWindow?) would work. If a Sys_Menu_Bar is
set up on a system that does not have such a menubar, these windows
move all the widgets down sufficiently and add a regular MenuBar. This
would allow the programmer to select what window(s) get menu bars,
rather than a single one or all of them.
+1 ... basically ...
This sounds sensible. However I would rather use an Fl_Window method -
maybe main_window() or menu_bar_window() - since we have more than one
window class that needs this (Fl_Window, Fl_Double_Window, ...). Hard to
tell which one to derive the 'MainWindow' class from.
I'm also not sure what would be "sufficient" to add a regular MenuBar.
This should likely be a user option as well. I know from my own
experience that I had a program where the menubar contained icons which
made it taller than a "normal" menubar.
OTOH I could also imagine an option that does "the opposite": think of a
"standard" (i.e. non-macOS) program that includes a standard menubar. An
option to "convert" this Fl_Menu_Bar to a system menubar *and* move all
the other widgets up by the height of the given menubar *and* decrease
the window height by the same amount would make this application
cross-platform w/o changing any code.
Again, I'm not sure if this would be feasible for a "real" program
because I don't know much about the different menu bar approaches on
macOS and other platforms.
There are maybe more (better?) options to make a "standard" application
macOS (ie. system menubar) aware w/o having to use platform specific
code, different widget positions, and window sizes. At least I hope so.
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