How to put menu bar in Apple menu bar in Mac OS by C++ Builder?

Question

I found an example using the TMenuBar.UseOSMenu property to place a main menu for Windows and Mac. But it seems it is only for Delphi. I can't find the same property in FMX's TMenuBar component in C++Builder.

Does anyone know how to put a menu bar in Apple's menu bar on Mac OSX in C++?

I'm using C++ Builder 10.1 Berlin Update 2.

Answer 1

There is no UseOSMenu property in 10.1 Berlin, in Delphi or C++. It was removed in XE3:

New Units and Changes in FireMonkey XE3

UseOSMenu has been removed. For multi-platform applications, you should use FMX.Menus.TMainMenu, a nonvisual component

Also See:

Using Menus in a FireMonkey Application

Creating Menus for OS X and Windows

Use the correct control for your target system (OS X vs. Windows).

• For Windows applications, use the TMenuBar control:

  • The main menu is placed in the client area of the form (standard for Windows).
  • The menu items are not on the Mac OS X menu bar (nonstandard for OS X).

• For Mac OS X applications, use the TMainMenu component:

  • The main menu is placed in the non-client area of the Windows form (nonstandard for Windows).
  • Menu items are placed on the Mac OS X menu bar (standard for OS X).

Answer 2

Resorting to $IFDEF and building the menus in code would work. But it's odd that FMX doesn't handle the main menu in a more portable way.

As is, TMainMenu isn't too bad, with some hiccups: On the Mac, the first defined menu becomes the application menu, with the name you gave it replaced by the app name. So, it's necessary to create first menu with a dummy name (e.g., "App"), with the usual "About" command on that menu. Then the File menu is the second menu to be defined. When run on a PC, that first dummy "App" menu needs to be deleted in code or else it will display. On the Mac (but not on PC) FMX adds an unrequested "Window" menu as the last menu; I have no idea how to prevent that.

An additional problem is ShortCuts. I haven't found a way to set these in TMainMenu's Items Editor in a portable way, i.e., resulting in Ctrl on PC and Cmd on Mac. Oh well, maybe after all the only good solution really is to construct it all in code with completely separate TMenuBar and TMainMenu and $IFDEFs!